I have built many 2 stroke and currently on my first 4 stoke build. 2 strokes and definitely budget friendly and tons of upgrades, but more maintenance and 2 strokes are LOUD. My 4stroke goes just as fast stock (35) and its quiet and smooth! My opinion. If you are looking to have fun buy a 2stroke but to get to work, get the 4stroke
Same...I'm a senior with many years of small cycle experience, and now I live in a better-grade place where I don't want neighbors upset when I go out or come in really late or early...:)) Upgrade a 4-stroke just 5-7 mph is enough and still quiet.
I lost my license for a year and have decided to commute by bike to work. Problem is I'm 350 lbs and my area has a lot of hills. I've been doing alright and been losing a bit of weight but I defintely would like something to help me on these hills so I can go more places. Would the 4-stroke be better for me then?
@@tcmedialab hey i used to weigh close to that and ran a 2 stroke to work for a year. I think its down to maintenance preferences. If you can afford, a fat tire bike with a 44t or larger might make those hills smoother in my opinion.
Also with the 2 stroke, they love to be revved and I noticed you gave it little revs and let the clutch out way too fast when doing off the line. So learning how to better use a clutch would probably help the performance
I was digging through all my bike stuff and found an old Indian frame I had. Put a 4 stroke on it. Fabbed up my own motor mounts. Only issue I had was the exhaust interfered with the frame. Easily solved by heating with the torch and bending it how I needed it. Started out with the stock 44 tooth sprocket, and the bike didn’t really have any legs. Changed to a 40t, better, but not quite. I’ve been running a 36 tooth and it does great. I really don’t want to be going over 35 on an over 100 year old frame. Matter of fact, I couldn’t keep those old rims tuned, so I put a set of worksman 11 guage spokes wheels on it. It’s great fun and I ride it to work every day, about 15 miles round trip. Now the weak links in both of these kits….. The rag joint. They’re ‘ok’ if you set them up right. Spend the money and get a hub adapter. The chain tensioners are garbage and dangerous. I’ve seen and heard of too many of them coming loose and ending up in the spokes. For the 2 strokes, they make a spring loaded one that fits on the gearbox. No such option for the 4 stroke. I found my best option was welding a Chevy small block alternator bracket between the seat stay and chain stay. Strong, cheap and looks better. I’ll be looking into a torque converter or a sun clutch soon because the centrifugal clutches are the weak link on the 4 strokes. Great video. Just remember everybody, ride like you’re invisible, because you are.
Thanks for this! I am partial to 4 stroke, mainly because I like the sound and no mixing fuel. Maintenance is also a factor. The cost is worth it to me. Again, thank you!
I love my 4 so far just make sure you get the good motor mount the one that came in the kit was crap and still had to do a bunch of grinding on the mount to get every bit I could to fit the bigger motor but well worth it.Plan on doing another kinda fun for a 64 old retired.
4 strokes are convenient and easy to ride but 2 strokes in my opinion are more fun because of the Manuel clutch, and when tuned right the are really fast
Yeah but I don't want to die going full bored out. I have a temperamental 2 cycle motorized bike. CLUTCH HUH? One time I forgot that the clutch was not the brake. Crash! Bike is okay! I have some pain. Ha! Ha! Bike ran the other day. No carburetor cover or air filter. Bought as is, running!
I got mine almost a year ago. Put it on a lowrider micargi. Someone wanted it BAD. Offered me $1500. But it was my first build and I didnt want to part with it.. She's my little green lady lol People love it
One option that's often overlooked is the BT80 (bullet train), which is an electric start 70CC 2 stroke with a 12V battery, oil bath clutch, and a charging system. Not only are they a bit more powerful than the 49cc motors, but have a full electrical system to wire up a headlight, turn signals, brake light, electronic speedometer/tach, etc. Lots and lots of possibilities there.
That brings in the issue of it being over 50cc and having to get it registered in many areas, (But most dont bother to check mine is 100cc with "50cc" stamped onto it 😂)
I've noticed some of the 4 stroke kits try to sneak in the same price but leave out either the motor mount, the wide crank set or I've also seen BOtH left out and still like almost $300! So, be sure to pay close attention to what's included in the kits!
What a fantastic video 👏🏼 I’ve been building the 2 strokes for 10 years now. Now considering the 4 stroke, I’m just curious 🧐 this was a great overall view of exactly what i needed to know. Thank you
If I ever had one of these, personally I'd prefer the 4 stroke. It might not be quite as quick, but it's easier to maintain, quieter (I'd rather not have a noise complaint) and generally more reliable
Excellent comparison for the 2 vs 4 stroke engines. They both have their advantages and disadvantages. I have been building Motorized Bikes ( AutoCycles) for six and half years and have 5 in my garage and working on the sixth one now (to be completed , tomorrow, Sunday 26th)., with a further two in my lockup. They range from the two old ones, Humber Cycles, to 3x 66cc 2 Strokes, one 43cc Weedeater ( weedwacker in your part of the world) in a folding commuter cycle. Two 4 strokes, one 39cc and the other 49cc same as your engine. The 39cc is side mounted on the left side at axle height.
I've just fitted the 4 stroke, although I have some issues to overcome. The air filter has to be changed and I'm going to have to bend the exhaust more or cut off the bracket and re weld it so I can mount the exhaust. The 2 stroke is notably smaller.
Nice video, I've dealt with both and even the 79cc predator. I eventually just went to the predator 212cc. Completely different and it changed the whole bike.
I just love your video and I like how you're not biased you don't voice your opinion you just show the product what it is how it performs straight-up just too products and not your opinion I love that your video is simple I like how you plainly stated that there is different variations due to user it really help me decide on what versus what thank you very much please make more videos some videos i.cringe just to watch their videos either they can't narrate properly or something wrong with their voice or their language of their English watching your video was quite Pleasant
I had a 4 stroke, sadly it was stollen, and aside from the transmission being messed up from the only issue I had with it was gas getting into my oil pan.
It’s not, valves need adjustment as soon as you run it for 5 hours, centrifugal clutch wears out crazy fast, gears in transmission often grind after wear, gear shaft splines shims off after a while, both aren’t the best but 2 stroke has a mechanical clutch which means you control it better. I’ve owned both bikes.
@@Farmtractor i only find valves need sorted that quickly if you keep the engine high rpm for any extended period of time, which for these bikes is a problem due to a single gear, you can lesson valve problem through gearing but will loose most the torque just to get a suitable cruising rpm on the 4-stroke, i've put 100+ hours on these engines and not needed the valve clearances sorted. I dont find the clutches to bad either, you would spend more on 2-stroke oil than you would clutches for the life of the engine, just the hassle of having to swap them out every couple of months. But weight has a major factor in this, if your a bigger person expect to do triple the maintenance on these parts, same for weight of bike, tires, and terrain you use it on.
trust me 2 stroke is the way to go in these small bicycle engines, two stroke has way more performance potential on the same cylinder size compared to fourstroke
4 stroke overall are just better. They have a bit less torque so they suffer a bit on inclines, but more overall power allowing faster flat speed. Also the fact you don't have to mix oil in with your fuel means it is cheaper to run. It has a less grating sound as well, I have always found 2-stroke motors to be extremely annoying.
My first build was a 2 stroke I got off of ebay. Cheaper to initially set up, but high maintenance with low quality parts. Ultimately it didn't last. For my second build I went with the 4 stroke. I will never run a 2 stroke again. I cannot believe the difference. Every single thing is better about 4 stroke.
the only REAL performance mod I've found on the 4 stroke is replacing the stock carb with the 2-stroke NT carb. Picked up a few MPH and better midrange power. The stock box muffler (on the huasheng) isn't as bad as everyone makes it out to be. The carb is the bottleneck.
Just earlier this week i changed the stock carb on my 49cc OHV 4stroke Hauseng to the NT carb. The easiest fit as i has the cast inlet matched the port in the head. As the carb dimensions matched, the engine ran rich ( 4stroked). The NT is set for 66cc. I dropped the needle, top notch, and the engine ran smooth. Better idle and crisp right through the rev range.
Read a few articles on this subject, each one said the 4 stroke can run longer than the 2 stroke for about an hour or so and the 2 stroke for about 30 minutes before over heating. If you have the budget to mod, 2 stroke. I prefer 4 stroke, regular gasoline and longevity is the deal breaker.
There's much more upgrades you can do with both engines, especially the 4 stroke to make it better. Other than simple upgrades such as the carb or exhaust, if you put the work into it you can do the insides of the engine as well and make it preform much better. That applies for both engines. Also the sprockets can be upgraded to a adapter clamp and can be adjusted to make sizes.
You want a side by side with a typical 80cc (66) and a 79cc predator? That can be arranged. Let me finish the ”Pimp My 50cc” series, then I'll do that side by side. Anything I might have missed in this video that you'd like to see in the next? Thanks for your contribution to the community 👍
Southern Custom CC The new big bore 2 stroke engine kits come with a displacement of 78.5cc instead of 66cc. Look for a "YD100", "T100", "Zeus", "Zeda100 Firestorm" etc
@Mario Salinas that's a bummer my dude, those 78.5cc 2T are real torquey and easily do 40+mph if done correctly on stock parts, while achieving 50-60miles per tank.
How did you get the brakes to work with the sprocket? I tried on the Hyper and the brakes wouldn't work too well and when you pressed harder they kicked the pedals ..
When it comes to small engines like this, I think the 2-stroke is the best option. Less complexity (no valves, cams etc) and a single cylinder 2-stroke engine will run smoother than a single cylinder 4-stroke as there are more power strokes per rotation of the engine. They also make more power for given displacement again because of more frequent power strokes.
It would seem the 4-stroke would benefit me better... I need it for going in and out of town.. it’s not start and stop it’s more just straight line and the 4 stroke seems to have a higher top speed...
the trouble is with synthetic oil is its expensive, so i use mineral oil, any oil, if u use gearbox oil or used engine oil, just be sure to mix it well with petroleum spirits before mixing it with fuel and always keep the tank moving
You also need to take into consideration what mix he was running in the vid for the 2 stroke, I run 50/1 in my bike and I can tell you it would put the stops on both of those bikes
Hello will done comparison. I have a question about the 4 stroke kit does it have a double chain tranmmison if so why did you buy this one and not a belt drive tranmmison
@Ezra Redgwell the belt drive Forrest is referring to is a toothbelt reduction, the better engine kits come with. And they're darn near immortal if set up correctly.
@Ezra Redgwell The pocketbike transmission is really marginal, have you ever had one open to look inside? Their sprockets are arc-welded to their shafts and not exactly straight. Glimer transmission belts are used on big powerful motorcycle Like HD, Buells and Suzukis. And the belts on the 5G transmissions are covered. in this case you're wrong, although Bikeberry's double chain 5:1 gearcase is considered better.
Oh! YT comments about motorized bikes Well the 2 stroke's instruction sheet always says to install the engine on a "V" framed bike for best fitment. It pretty much locks the engine in place which you can't say about the cruiser frame. Also that 4 stroke gearbox is 3.2:1 gearing versus the 4.11:1 on the reduction on the 50cc 2 stroke. Fairly big difference in how either bike will climb hills You would be better to buy a 54T sprocket for the 4stroke to even this reduction ratio. Also note that the "5G" type Glimer belt transmission on the better quality 4 strokes last longer. All of the 2 strokes have eccentric output sprockets and I noticed the 2 stroke in this video was 'warbling" because of that off center sprocket. This has been an issue with the 2 strokes for years, it's what eventually damages the left side spokes through the rubber clamping ring rag-joint. The 2 strokes also benefit from a smaller main jet and running 32:1 fuel : oil. Remember to grease your primary gears every 300 miles or so..
Yeah my two stroke does 28.2 mph!!! Only 49cc uberscoot. But I think I seized the motor. I hope it’s just the carb. I ordered a good carb to change it this week.
In terms of power, the 2 stroke seems to have more horsepower, but lower torque, meanwhile the 4 stroke is flipped, which makes it slightly better for going up hills or pulling a trailer (not by much though)
You forgot to mention the bigest performance mod you can do to the 4 stroke kit... Exhaust. The stock exhaust on both kits are crap. The 2 stroke would benifit more but it still makes quite a difference on the 4 stroke.
Isn't it easier to have a pull start than too have the momentum too start the two cycle? CURSING? Should have heard me today. I have spondylitheses of the spine and epilepsy. Hard to push enough momentum of my legs to start the bike.
Don't know if you mentioned it. But the two stroke has a definite advantage over the four stroke in that it is not reliant on a separate oil pump to keep the engine well lubricated. Since the two stroke has the oil in it's fuel it can operate in any position without changing how much oil the engine is getting at any one time. Four strokes on the other hand, depending on how you mounted the engine, can have difficulty in getting proper lubrication to all parts of the engine at certain times. Like on an extended steep uphill grade. Where the oil in the reservoir may all pool in the back of the reservoir due to the bike's uphill orientation . I understand that this may only be a couple of seconds in duration but over time those incidents can add up to major damage in the four stroke engine.
Ok, being a newb, ive got a couple of questions..... 1. Why doesnt the 2 stroke have a pull start? 2. Do both engines use a centrifugal clutch? I currently have a 4 stroke and love it. Adusting the valves, rejetting the carb and advancing the timing 2°, (also doing your clutch spring trick) and im doing an easy 30 mph on dirt and 37 on even pavement. And i weigh in at 220lbs! Whats your theory on exhaust? Straight or keep the muffler?
I built a 2 stroke and 4 stroke but sold the 2 stroke. I still ride the 4 stroke almost 2 years later with no maintenance but oil change and carb change cause I let the gas sit in the carb . Carb was $22
please tell a location that that has a pull up pump that is non ethanol? .... pretty sure all pumps have some ethanol and up to 10 or 15% in summer months..... farm fuel is bulk order, not at pumps and has been for a good while....
i have both models. if you ask what platform should i prefer? if i was alone in this dark wet road in the middle of the foggy forest being chase after a mob of hungry wolfs and im allow to escape with one motorized bike that would be a 2 stroke. the 4 stroke is easy to ride but what i dislike about it is the centrifugal clutch can be easily wear out on a stop and go traffic. far what i figure it isn't made to haul a 200lbs man on a 26" wheel from a stand still but was made for them little wheels mini pocket bikes "if im not mistaken" unless some kind modification in the gear box is made to gain low end torque or a 56 teeth large sprocket on the back wheel to increase the life span of the centrifugal clutch. far as the maintenance i go with the 2 stroke. on a long straight road the 4 stroke is fun to ride.
I'm roughly 240lbs and was going to buy a 26inch beach cruiser. I'm still debating which one would be better for me, I'll be riding it mainly in town a few times a wk in the summer months. I was considering a 4 stroke because it's less noisier & seems smoother. Do you think due to my weight you would recommend the 2? Also there are a lot of hills in the town I live. Not much flat.
@@dekem7137 get the 212 engine version you will never have any problems and just put a 50cc sticker over the 212cc sticker . The police don't know the difference .
@@dekem7137 as long its not a steep hill you'll be fine. i don't recommend trying to gas it on a hill either. you'll burn out the centrifugal clutch in matter of no time. if you don't mind pedaling and get the bike going before giving it gas than its fine. same goes with the 2 stroke, gotta get it going before engaging the clutch or else the engine will stall. if you decide to go with the 4 stroke i highly advise you to buy a 56t sprocket instead of the 44t sprocket that comes with the kit that's if the drive train comes with the old traditional chain driven gear box instead of the newer version that comes with the rubber belt. with the 56t sprocket on you'll gain more low end torque therefore you'll get up to speed quickly and increase the life span of the centrifugal clutch BUT lose top end speed. that's the trade off between the 56t and the 44t. and get rid of the factory centrifugal clutch that comes with the engine. they're cheap and wears out quickly. spend some money and get you a quality clutch that will last. i've been there done it. once the bike get up to speed you'll enjoy it, less vibration, less noise compare to the 2 stroke rival.
Awesome video. But...you can step it up like I did. Got a similar bike from my in-laws. Got the 212 predator engine, torque converter, and a stage 1 kit. After some reinforcement at the welds, it does very very well for a few hundred bucks!
I bought a 2 stroke 80cc thinking that I would get better power but go the same results as you but I’m 60lbs heavier and I put the kit on a 24 inch tire bike if i were to do it over again I would do it on a 26” bicycle and gotten the four stroke I got the two stroke to save money but by the time I upgraded all the bad kit parts I paid more than what I would have if I got a four stroke and the carb needs to be cleaned Once a month or it gets stuck both on stock and upgraded carbs
Hello from Romania, one question for you ... Would you prefer more a 4 stroke kit or the 2 stroke ? I'm about to build one and I have doubts about the 4 stroke and the clutch issues ... And for the 2 stroke I have doubts about the noise ... Could you help me out with a suggestion ? I enjoy riding on hils and valleys ... Which one would be better for me ? Thanks
There has to be a problem with your 2 stroke I installed 3 and went over 35 mph on 24 inch wheels(i gotta say I weight about 150lbs for 6ft tall) and I suppose the 26inches would make it even faster but most certainly will impair the ability to go from 0 with only the engine power(w/o pedaling)
I didn't see much point in saying that the 2stroke was "more upgradable" than the 4stroke without even hinting at what that means i.e.potential for 25% vs 10% performance improvement or whatever.
I'd personally not want to put that much weight on a bike and I'd personally not want to stress that small of an engine. The yd100 might be better equipped for the torque you'd need, but a standard bike would need some upgraded parts.
Actually, you’ll probably see better performance because you are getting more, direct airflow, you’ll probably have to notice where your c-clip is on your needle....BUT IT IS A MATTER OF TIME BEFORE YOU GRENADE YOUR ENGINE!!!. If even the smallest pebble or piece of rock or anything hard gets sucked into your carb, then it will go straight to your chamber and bye bye engine! It’s a roll of the dice.
Almost not comparing Apples to Apples because the four stroke transmission is geared so high. With a 44 tooth sprocket they have no of hill climbing power whatsoever. But should do 35 on flat ground. Also that's a pretty nice engine mounting bracket for a generic kit.
Im building a 2-stroke bike on the same huffy cruiser... just having trouble with the coaster brake arm hitting the mounting bolts on the sprocket... Did you bend the arm? I noticed it comes already bent from the factory... Do I have to bend it more??
I had to bend my coaster brake arm when putting together my bike. Not sure if this is how you’re supposed to or not but I just used a hammer to make clearance for the bolts
Not sure if this applies to motor bikes but on old 2stroke motorcycles and dirt bikes you usually get non-synthetic oil with 2stroke additives. Non-synthetic makes for a cleaner burn, as in 2strokes need to burn its oil. Also fun fact: rotary’s (wankle rotary) are technically 2strokes
I used a 4-stroke weed wacker motor and attached a gear to the crank so it could attach to another gear on the crankshaft so I could just have direct power to the wheels using the already existing 21 speed for my mountain bike so it's like I have a transmission and I can go faster or slower without using the throttle and instead of using a twist throttle I used one off of an old snowmobile and I've been able to hit 45 mph with it with no issue my only issue was waiting for my dad to be free so I could use his welder bike crankshaft and to the weed wackers clutch and I just grilled some holes for some brackets to mount the motor and I was able to move the fuel tank up to the top bar of the bike Also i removed the pedals and put pegs on the front rim to place my feet and a one of those little generators that rub against the tire to power a light and i did a second to power a phone charger And thankfully I can just use the pull start with key ignition to allow electricity to go into the spark plug did I picked up from AutoZone And I also don't have to pedal it to get it moving
Thx. With a 2 stroke, the answer varies because not everyone rides like they should and not everyone has the same gas mixture. If you have less oil in your gas mixture (like a 40:1) then your engine gets hotter a lot quicker and burns itself down much quicker as well because there is not a lot of oil in the gas to help cool and indicate your internals. So that answer could be anywhere from 7-25 miles before a cool down is needed. With a 4 stroke, you can go a lot further because the oil and lubrication is separate and the engine temperature can be regulated better. I have never had to stop before reaching a destination with a 4 stroke; so I can't give a specific milage on that. Yet, if you red line your engine for miles and miles with either engine, of course you won't be able to go as far as if you were just cruising at a steady RPM. Cruising is key for temperature regulation. Thanks for watching, and I hope you come back and check out the channel more in the future! Happy riding ✌️
The 2stk has no fan cooling system, (cooling fins on cylinder, head are too small), it relies on free air flow, runs hot, looses power soon, the 4stk has a fan cooling system, much better.
Actually using the recommended 20:1 will cause the engine to overheat as you run the fuel mixture too lean. 32:1 is what most forum experts recommend, but you should also look into playing around with the main jet setting as sometimes the engines are far too rich in main jet mixture. The NT carbs needs careful float level setting and adjusting the circlip on the needle valve.
For sure, 49cc and 50cc are practically the same size, but just for the record, we are talking 49cc here. And it would have been nice if the gear ratios on both bikes would have been specified.
Specifically 4.11:1 for the 2 stroke and 3.2:1 for the pocketbike X7 transmission, best to run a big rear sprocket (54T~60T) on the pocketbike transmission.
I have built many 2 stroke and currently on my first 4 stoke build. 2 strokes and definitely budget friendly and tons of upgrades, but more maintenance and 2 strokes are LOUD. My 4stroke goes just as fast stock (35) and its quiet and smooth! My opinion. If you are looking to have fun buy a 2stroke but to get to work, get the 4stroke
Same here.
Same...I'm a senior with many years of small cycle experience, and now I live in a better-grade place where I don't want neighbors upset when I go out or come in really late or early...:)) Upgrade a 4-stroke just 5-7 mph is enough and still quiet.
I lost my license for a year and have decided to commute by bike to work. Problem is I'm 350 lbs and my area has a lot of hills. I've been doing alright and been losing a bit of weight but I defintely would like something to help me on these hills so I can go more places. Would the 4-stroke be better for me then?
@@tcmedialab hey i used to weigh close to that and ran a 2 stroke to work for a year. I think its down to maintenance preferences. If you can afford, a fat tire bike with a 44t or larger might make those hills smoother in my opinion.
"35" means mph or km/h?
Also with the 2 stroke, they love to be revved and I noticed you gave it little revs and let the clutch out way too fast when doing off the line. So learning how to better use a clutch would probably help the performance
OUCH!!😬
Instablaster.
Classic 2 Stroke Guy excuses. "it wasn't ridden right, it was to lean, it needed a rebiuld"
@@trxtech3010*rebuild
I was digging through all my bike stuff and found an old Indian frame I had. Put a 4 stroke on it. Fabbed up my own motor mounts. Only issue I had was the exhaust interfered with the frame. Easily solved by heating with the torch and bending it how I needed it. Started out with the stock 44 tooth sprocket, and the bike didn’t really have any legs. Changed to a 40t, better, but not quite. I’ve been running a 36 tooth and it does great. I really don’t want to be going over 35 on an over 100 year old frame. Matter of fact, I couldn’t keep those old rims tuned, so I put a set of worksman 11 guage spokes wheels on it. It’s great fun and I ride it to work every day, about 15 miles round trip.
Now the weak links in both of these kits…..
The rag joint. They’re ‘ok’ if you set them up right. Spend the money and get a hub adapter.
The chain tensioners are garbage and dangerous. I’ve seen and heard of too many of them coming loose and ending up in the spokes. For the 2 strokes, they make a spring loaded one that fits on the gearbox. No such option for the 4 stroke.
I found my best option was welding a Chevy small block alternator bracket between the seat stay and chain stay. Strong, cheap and looks better.
I’ll be looking into a torque converter or a sun clutch soon because the centrifugal clutches are the weak link on the 4 strokes.
Great video. Just remember everybody, ride like you’re invisible, because you are.
Thanks for this! I am partial to 4 stroke, mainly because I like the sound and no mixing fuel. Maintenance is also a factor. The cost is worth it to me. Again, thank you!
If you have a smaller bike, go for the 2 stroke though. It will fit better
I love my 4 so far just make sure you get the good motor mount the one that came in the kit was crap and still had to do a bunch of grinding on the mount to get every bit I could to fit the bigger motor but well worth it.Plan on doing another kinda fun for a 64 old retired.
4 strokes are convenient and easy to ride but 2 strokes in my opinion are more fun because of the Manuel clutch, and when tuned right the are really fast
They are also easier to install and work onto bikes
Plus way more modifications
Yeah but I don't want to die going full bored out. I have a temperamental 2 cycle motorized bike. CLUTCH HUH? One time I forgot that the clutch was not the brake. Crash! Bike is okay! I have some pain. Ha! Ha! Bike ran the other day. No carburetor cover or air filter. Bought as is, running!
@@kennithumperovitch1312 all motorcycles use the left handle as the clutch
@@shancyroesner9212 I know that now! I have a motorized bicycle thought that would be different.
I'm watching this video because I'm getting my first 2 stroke soon I can't wait for it to arrive.
I got mine almost a year ago. Put it on a lowrider micargi.
Someone wanted it BAD. Offered me $1500.
But it was my first build and I didnt want to part with it.. She's my little green lady lol
People love it
Did u end up building it?
I am getting mine back, modifying it and throwing it on a new bike.
Same plus $50 in parts. expansion chamber and muffler, should make it about as loud as a normal sedan
One option that's often overlooked is the BT80 (bullet train), which is an electric start 70CC 2 stroke with a 12V battery, oil bath clutch, and a charging system. Not only are they a bit more powerful than the 49cc motors, but have a full electrical system to wire up a headlight, turn signals, brake light, electronic speedometer/tach, etc. Lots and lots of possibilities there.
Hpw expensive is it
That brings in the issue of it being over 50cc and having to get it registered in many areas,
(But most dont bother to check mine is 100cc with "50cc" stamped onto it 😂)
I've noticed some of the 4 stroke kits try to sneak in the same price but leave out either the motor mount, the wide crank set or I've also seen BOtH left out and still like almost $300! So, be sure to pay close attention to what's included in the kits!
Im sold on the 4 stroke .Quieter ,runs just as fast , no fuel mix why not hey .
Great comparison mate , appreciate all the effort and edits great work
What a fantastic video 👏🏼 I’ve been building the 2 strokes for 10 years now. Now considering the 4 stroke, I’m just curious 🧐 this was a great overall view of exactly what i needed to know. Thank you
Thank you for watching and being a part of the community.
This is the best video comparison anyone has ever made.
I am truly grateful for this comment. Thank you very much!
79cc 4 stroke phatmoto guy here. i love my 4 stroke for commuting. a 2 stroke to gear faster n rip on the weekends be fun too.🍻
If I ever had one of these, personally I'd prefer the 4 stroke. It might not be quite as quick, but it's easier to maintain, quieter (I'd rather not have a noise complaint) and generally more reliable
Excellent comparison for the 2 vs 4 stroke engines. They both have their advantages and disadvantages.
I have been building Motorized Bikes ( AutoCycles) for six and half years and have 5 in my garage and working on the sixth one now (to be completed , tomorrow, Sunday 26th)., with a further two in my lockup.
They range from the two old ones, Humber Cycles, to 3x 66cc 2 Strokes, one 43cc Weedeater ( weedwacker in your part of the world) in a folding commuter cycle. Two 4 strokes, one 39cc and the other 49cc same as your engine. The 39cc is side mounted on the left side at axle height.
2 strokes are more fun, fast, and loud. 4 strokes are a bit slower but generally easier. Depends on what you want.
000+++p
+99
Always been a 2 stroke guy myself. I have some vintage dirt bikes. I have a Honda CR500 and a CR480R. Their powerbands are a RUSH!
@@scottcupp8129 yup like a slingshot had a h2 kaw like that
I've just fitted the 4 stroke, although I have some issues to overcome. The air filter has to be changed and I'm going to have to bend the exhaust more or cut off the bracket and re weld it so I can mount the exhaust. The 2 stroke is notably smaller.
Probably the best comparison of the 2 and 4 stroke engines...helped me a lot!!!
Nice video, I've dealt with both and even the 79cc predator. I eventually just went to the predator 212cc. Completely different and it changed the whole bike.
I wanna make an oil drum cart with a 212.
I have a predator 212 on a gokart, and you put it on a bike?💀
A 212 on a BIKE???!💀💀💀💀 that will probably kill you haha
Where you ride it to commute or fun?
I just love your video and I like how you're not biased you don't voice your opinion you just show the product what it is how it performs straight-up just too products and not your opinion I love that your video is simple I like how you plainly stated that there is different variations due to user it really help me decide on what versus what thank you very much please make more videos some videos i.cringe just to watch their videos either they can't narrate properly or something wrong with their voice or their language of their English watching your video was quite Pleasant
Excellent video, your visuals explained everything without trying to talk over the engine noise .. Well done!
6:19 26kg 2 stroke, 29kg 4 stroke
So what? That's a true statistic, but it makes very little difference to an average rider who is having a good time on either bike.
@@dehoedisc7247 He was just converting it from pounds to kilograms. Calm down.
Obrigado!
I had a 4 stroke, sadly it was stollen, and aside from the transmission being messed up from the only issue I had with it was gas getting into my oil pan.
Probably had a improper float height in the carb
4 strokes looks cool
I´d take the 2 stroke for sure!
So many options to make more power...
This was very well done, very informative, thanks, will look for the next.
nice, this was one best videos of 2/4-stroke motors that i have seen. 4stroke seems to be better chose even if it cost more.
It’s not, valves need adjustment as soon as you run it for 5 hours, centrifugal clutch wears out crazy fast, gears in transmission often grind after wear, gear shaft splines shims off after a while, both aren’t the best but 2 stroke has a mechanical clutch which means you control it better. I’ve owned both bikes.
@@Farmtractor i only find valves need sorted that quickly if you keep the engine high rpm for any extended period of time, which for these bikes is a problem due to a single gear, you can lesson valve problem through gearing but will loose most the torque just to get a suitable cruising rpm on the 4-stroke, i've put 100+ hours on these engines and not needed the valve clearances sorted. I dont find the clutches to bad either, you would spend more on 2-stroke oil than you would clutches for the life of the engine, just the hassle of having to swap them out every couple of months. But weight has a major factor in this, if your a bigger person expect to do triple the maintenance on these parts, same for weight of bike, tires, and terrain you use it on.
trust me 2 stroke is the way to go in these small bicycle engines, two stroke has way more performance potential on the same cylinder size compared to fourstroke
4 stroke overall are just better. They have a bit less torque so they suffer a bit on inclines, but more overall power allowing faster flat speed.
Also the fact you don't have to mix oil in with your fuel means it is cheaper to run.
It has a less grating sound as well, I have always found 2-stroke motors to be extremely annoying.
@@Farmtractor your explanation helps my decision much more. What brand kit should I get
Broski that was a perfectly executed video!!! 1,000,000!! Cuz they dont have that emoji yet❤
Thanks, I miss your bike builds. I appreciate everything you upload tho.
My first build was a 2 stroke I got off of ebay. Cheaper to initially set up, but high maintenance with low quality parts. Ultimately it didn't last. For my second build I went with the 4 stroke. I will never run a 2 stroke again. I cannot believe the difference. Every single thing is better about 4 stroke.
I thought this was a lotorweek show for a minute!! Well done!
the only REAL performance mod I've found on the 4 stroke is replacing the stock carb with the 2-stroke NT carb. Picked up a few MPH and better midrange power. The stock box muffler (on the huasheng) isn't as bad as everyone makes it out to be. The carb is the bottleneck.
Just earlier this week i changed the stock carb on my 49cc OHV 4stroke Hauseng to the NT carb. The easiest fit as i has the cast inlet matched the port in the head. As the carb dimensions matched, the engine ran rich ( 4stroked). The NT is set for 66cc. I dropped the needle, top notch, and the engine ran smooth. Better idle and crisp right through the rev range.
Read a few articles on this subject, each one said the 4 stroke can run longer than the 2 stroke for about an hour or so and the 2 stroke for about 30 minutes before over heating. If you have the budget to mod, 2 stroke. I prefer 4 stroke, regular gasoline and longevity is the deal breaker.
4 stroke will run for years and you can run it wide open for hours no problem. phatmoto for 2 or 3 years🍻
There's much more upgrades you can do with both engines, especially the 4 stroke to make it better. Other than simple upgrades such as the carb or exhaust, if you put the work into it you can do the insides of the engine as well and make it preform much better. That applies for both engines. Also the sprockets can be upgraded to a adapter clamp and can be adjusted to make sizes.
This is what I was looking for. Now can we get 66cc vs 79cc.
You want a side by side with a typical 80cc (66) and a 79cc predator? That can be arranged. Let me finish the ”Pimp My 50cc” series, then I'll do that side by side. Anything I might have missed in this video that you'd like to see in the next? Thanks for your contribution to the community 👍
Southern Custom CC I can wait I have patient to watch your videos. Thank you for the recommendation
Just do a the new 100cc(80cc, actual 78.5cc) vs the 4 stroke, I prefer the 2 strokes easy and lightweight motors, also cheaper
Southern Custom CC The new big bore 2 stroke engine kits come with a displacement of 78.5cc instead of 66cc. Look for a "YD100", "T100", "Zeus", "Zeda100 Firestorm" etc
@Mario Salinas that's a bummer my dude, those 78.5cc 2T are real torquey and easily do 40+mph if done correctly on stock parts, while achieving 50-60miles per tank.
Great video! Keep up the great content.
I live in a pretty hilly are, and I would like to know if the 4 stroke torque is comparably better for up hill driving compared to 2 stroke.
How did you get the brakes to work with the sprocket? I tried on the Hyper and the brakes wouldn't work too well and when you pressed harder they kicked the pedals ..
When it comes to small engines like this, I think the 2-stroke is the best option. Less complexity (no valves, cams etc) and a single cylinder 2-stroke engine will run smoother than a single cylinder 4-stroke as there are more power strokes per rotation of the engine. They also make more power for given displacement again because of more frequent power strokes.
I agree but they don't run smoother.
Lmfaooo
When you go off on a paragraph-long schpeel, for fun.
On Earth, 4 strokes are a helluva lot 'smoother' running engines, & will last much longer.
It would seem the 4-stroke would benefit me better... I need it for going in and out of town.. it’s not start and stop it’s more just straight line and the 4 stroke seems to have a higher top speed...
Awesome comparison vid!! Thx
Well done video! Thanks for posting.
LA Hover : Thank you for being a part of the community 👍
@@SouthernCustomCC hello
the trouble is with synthetic oil is its expensive, so i use mineral oil, any oil, if u use gearbox oil or used engine oil, just be sure to mix it well with petroleum spirits before mixing it with fuel and always keep the tank moving
2 mods for the 4 stroke. Rejet carb and remove intake and exhaust skirts. Covers 1/4 of both. Has integrated head so no milling for compression.
What about removing the governor....
william gosvener all the Chinese huasheng ones I’ve seen didn’t have a governor, I’ve heard the legit Honda gxh50 does tho
Meof Myof answer is the 79cc if you’re looking for power definitely.
You also need to take into consideration what mix he was running in the vid for the 2 stroke, I run 50/1 in my bike and I can tell you it would put the stops on both of those bikes
thats how mine was till it blew up
@@clutchplox i use around 32/1 i belive. its winter in canada so i havnt been riding it and forget what the mix is right now
40:1
In my experience the two stroke is louder, has more exhaust and there is more power at higher RPM. 49cc and under is street legal in some places.
Hello will done comparison. I have a question about the 4 stroke kit does it have a double chain tranmmison if so why did you buy this one and not a belt drive tranmmison
@Ezra Redgwell the belt drive Forrest is referring to is a toothbelt reduction, the better engine kits come with. And they're darn near immortal if set up correctly.
@Ezra Redgwell The pocketbike transmission is really marginal, have you ever had one open to look inside? Their sprockets are arc-welded to their shafts and not exactly straight. Glimer transmission belts are used on big powerful motorcycle Like HD, Buells and Suzukis. And the belts on the 5G transmissions are covered. in this case you're wrong, although Bikeberry's double chain 5:1 gearcase is considered better.
Oh! YT comments about motorized bikes Well the 2 stroke's instruction sheet always says to install the engine on a "V" framed bike for best fitment. It pretty much locks the engine in place which you can't say about the cruiser frame. Also that 4 stroke gearbox is 3.2:1 gearing versus the 4.11:1 on the reduction on the 50cc 2 stroke. Fairly big difference in how either bike will climb hills You would be better to buy a 54T sprocket for the 4stroke to even this reduction ratio. Also note that the "5G" type Glimer belt transmission on the better quality 4 strokes last longer.
All of the 2 strokes have eccentric output sprockets and I noticed the 2 stroke in this video was 'warbling" because of that off center sprocket. This has been an issue with the 2 strokes for years, it's what eventually damages the left side spokes through the rubber clamping ring rag-joint. The 2 strokes also benefit from a smaller main jet and running 32:1 fuel : oil. Remember to grease your primary gears every 300 miles or so..
I had the two stroke one and it was able to push like 35mph
I’m not sure if he had taken his governor off his
@@aydenparkinson8874 mine came from the most Chinese company ever and didn’t even come with a governor, downhill it was going almost 40!
Yeah my two stroke does 28.2 mph!!! Only 49cc uberscoot. But I think I seized the motor. I hope it’s just the carb. I ordered a good carb to change it this week.
I’ve got a 4 stroke and it does 35 ez
Mine is like 45,6kmh
Wow nice informative video great work
Now this is how you do a side by side comparison
In terms of power, the 2 stroke seems to have more horsepower, but lower torque, meanwhile the 4 stroke is flipped, which makes it slightly better for going up hills or pulling a trailer (not by much though)
You forgot to mention the bigest performance mod you can do to the 4 stroke kit... Exhaust. The stock exhaust on both kits are crap. The 2 stroke would benifit more but it still makes quite a difference on the 4 stroke.
What exhaust do you recommend?
Isn't it easier to have a pull start than too have the momentum too start the two cycle? CURSING? Should have heard me today. I have spondylitheses of the spine and epilepsy. Hard to push enough momentum of my legs to start the bike.
It is, it you’ll need to change out the crank for a wide pedal set crank in order to pedal. Also, the pull starts tend to break pretty quickly.
Don't know if you mentioned it. But the two stroke has a definite advantage over the four stroke in that it is not reliant on a separate oil pump to keep the engine well lubricated. Since the two stroke has the oil in it's fuel it can operate in any position without changing how much oil the engine is getting at any one time. Four strokes on the other hand, depending on how you mounted the engine, can have difficulty in getting proper lubrication to all parts of the engine at certain times. Like on an extended steep uphill grade. Where the oil in the reservoir may all pool in the back of the reservoir due to the bike's uphill orientation . I understand that this may only be a couple of seconds in duration but over time those incidents can add up to major damage in the four stroke engine.
good video very well put together
Ok, being a newb, ive got a couple of questions..... 1. Why doesnt the 2 stroke have a pull start? 2. Do both engines use a centrifugal clutch? I currently have a 4 stroke and love it. Adusting the valves, rejetting the carb and advancing the timing 2°, (also doing your clutch spring trick) and im doing an easy 30 mph on dirt and 37 on even pavement. And i weigh in at 220lbs! Whats your theory on exhaust? Straight or keep the muffler?
I built a 2 stroke and 4 stroke but sold the 2 stroke. I still ride the 4 stroke almost 2 years later with no maintenance but oil change and carb change cause I let the gas sit in the carb . Carb was $22
Good video but the 2 stroke can be hot tuned after the carb is set to full drive it needs an adjusment when hot
Hey i was wondering if you had any issues with having the coaster brake as your primary brake
It doesn’t really matter
I had problems when I did a build with the Hyper, it didn't brake well and if you pushed harder it would kick the pedals forward
please tell a location that that has a pull up pump that is non ethanol? .... pretty sure all pumps have some ethanol and up to 10 or 15% in summer months..... farm fuel is bulk order, not at pumps and has been for a good while....
Great comparision. I would like to build a 4 stroke. How heavy are would these bikes be? 2 stroke vs 4 stroke?
Great video! what is your personal favorite between the two?
I would like to see you all out power outing straight up hills uphill climbing steep same CC same sprocket big that would be killer.
Hy. Is there a way to make a motorized 50cc setup demountable from the frame and put back in like 5 to 10 minutes after airplane transport?
Wow great comparison video
i have both models. if you ask what platform should i prefer? if i was alone in this dark wet road in the middle of the foggy forest being chase after a mob of hungry wolfs and im allow to escape with one motorized bike that would be a 2 stroke. the 4 stroke is easy to ride but what i dislike about it is the centrifugal clutch can be easily wear out on a stop and go traffic. far what i figure it isn't made to haul a 200lbs man on a 26" wheel from a stand still but was made for them little wheels mini pocket bikes "if im not mistaken" unless some kind modification in the gear box is made to gain low end torque or a 56 teeth large sprocket on the back wheel to increase the life span of the centrifugal clutch. far as the maintenance i go with the 2 stroke. on a long straight road the 4 stroke is fun to ride.
I'm roughly 240lbs and was going to buy a 26inch beach cruiser. I'm still debating which one would be better for me, I'll be riding it mainly in town a few times a wk in the summer months. I was considering a 4 stroke because it's less noisier & seems smoother. Do you think due to my weight you would recommend the 2? Also there are a lot of hills in the town I live. Not much flat.
@@dekem7137 get the 212 engine version you will never have any problems and just put a 50cc sticker over the 212cc sticker . The police don't know the difference .
@@dekem7137 as long its not a steep hill you'll be fine. i don't recommend trying to gas it on a hill either. you'll burn out the centrifugal clutch in matter of no time. if you don't mind pedaling and get the bike going before giving it gas than its fine. same goes with the 2 stroke, gotta get it going before engaging the clutch or else the engine will stall. if you decide to go with the 4 stroke i highly advise you to buy a 56t sprocket instead of the 44t sprocket that comes with the kit that's if the drive train comes with the old traditional chain driven gear box instead of the newer version that comes with the rubber belt. with the 56t sprocket on you'll gain more low end torque therefore you'll get up to speed quickly and increase the life span of the centrifugal clutch BUT lose top end speed. that's the trade off between the 56t and the 44t. and get rid of the factory centrifugal clutch that comes with the engine. they're cheap and wears out quickly. spend some money and get you a quality clutch that will last. i've been there done it. once the bike get up to speed you'll enjoy it, less vibration, less noise compare to the 2 stroke rival.
Name of the music in the background?
Could you put the link of where you got the 4 stroke at? Please
did the hyper cruiser come with a 3 piece crank assembly or was it a one piece?
Awesome video. But...you can step it up like I did. Got a similar bike from my in-laws. Got the 212 predator engine, torque converter, and a stage 1 kit. After some reinforcement at the welds, it does very very well for a few hundred bucks!
Nice! Careful though....its not called a death row set up for no reason! I hope you have a lot of fun! Be safe, and thanks for watching!
Video is educated to me. Awesome and Thanks
Great video! Simple solution, get both!
I like this idea better then my moped. 😊💪👊
Is the sprocket the same on both? I am replacing a 2 stroke kit with a 4 stroke kit and my chain hasnt stayed on long enough to ride
I bought a 2 stroke 80cc thinking that I would get better power but go the same results as you but I’m 60lbs heavier and I put the kit on a 24 inch tire bike if i were to do it over again I would do it on a 26” bicycle and gotten the four stroke I got the two stroke to save money but by the time I upgraded all the bad kit parts I paid more than what I would have if I got a four stroke and the carb needs to be cleaned Once a month or it gets stuck both on stock and upgraded carbs
Love ur video. No bs, right to the point
Excellent views . The 4 stroke is the best .7/31/2021
Hello from Romania, one question for you ... Would you prefer more a 4 stroke kit or the 2 stroke ? I'm about to build one and I have doubts about the 4 stroke and the clutch issues ... And for the 2 stroke I have doubts about the noise ... Could you help me out with a suggestion ? I enjoy riding on hils and valleys ... Which one
would be better for me ? Thanks
Hello do you have a link for the bike that you used?
There has to be a problem with your 2 stroke I installed 3 and went over 35 mph on 24 inch wheels(i gotta say I weight about 150lbs for 6ft tall) and I suppose the 26inches would make it even faster but most certainly will impair the ability to go from 0 with only the engine power(w/o pedaling)
Pendergrass, GA? I think I saw my aunts house.
I have a question can you use this on a bike with coaster brakes
What would you recommend for a tricycle? Would 49cc work?
I'd say go for the biggest motor that's street legal in your area
I didn't see much point in saying that the 2stroke was "more upgradable" than the 4stroke without even hinting at what that means i.e.potential for 25% vs 10% performance improvement or whatever.
Mi
Figure 58mph on flat ground vs 31mph stock (my personal experience), loads more torque, and alot better sound.
I had a GX35 4 stroke grass cutter engine bought it from the junkyard
Nice builds! Is a 49 cc 4 stroke good enough to also carry a passenger? Lmk any recommendations plz!🙏
I'd personally not want to put that much weight on a bike and I'd personally not want to stress that small of an engine. The yd100 might be better equipped for the torque you'd need, but a standard bike would need some upgraded parts.
Got to love them hyper bicycles I think that's what kind it is LOL
My 2 cycle motorized bike doesn't have a carburetor cover will that interfere in performance? I bought it that way.
Actually, you’ll probably see better performance because you are getting more, direct airflow, you’ll probably have to notice where your c-clip is on your needle....BUT IT IS A MATTER OF TIME BEFORE YOU GRENADE YOUR ENGINE!!!. If even the smallest pebble or piece of rock or anything hard gets sucked into your carb, then it will go straight to your chamber and bye bye engine! It’s a roll of the dice.
How long can i ride on a 2 stroke engine? 80 % speed for 30 mins is safe or willl the engine overheat and damage?
what transmission upgrade is good for the 49cc 4 stroke? best carb? shifting kit?
What would you recommend for a bike that will be used in small races with other motorized bikes?
2 strokes have more power, 4 strokes has better top speed. So in my place i would choose 2 strokes.
Lauris thanks!
@@laurynaszo687 actually 2 strokes have a lot of power and top speed u do 3/5 good mods and it will reach 10-11.5k rpm and top speed of 70mph
Almost not comparing Apples to Apples because the four stroke transmission is geared so high. With a 44 tooth sprocket they have no of hill climbing power whatsoever. But should do 35 on flat ground. Also that's a pretty nice engine mounting bracket for a generic kit.
Im building a 2-stroke bike on the same huffy cruiser... just having trouble with the coaster brake arm hitting the mounting bolts on the sprocket... Did you bend the arm? I noticed it comes already bent from the factory... Do I have to bend it more??
I had to bend my coaster brake arm when putting together my bike. Not sure if this is how you’re supposed to or not but I just used a hammer to make clearance for the bolts
That's a hyper cruiser in the video.
What about travel distance? How many miles will they go on a tank of gas?
u dont think changing exhaust on 4 stroke is easy upgrade as well?
Not sure if this applies to motor bikes but on old 2stroke motorcycles and dirt bikes you usually get non-synthetic oil with 2stroke additives. Non-synthetic makes for a cleaner burn, as in 2strokes need to burn its oil.
Also fun fact: rotary’s (wankle rotary) are technically 2strokes
I used a 4-stroke weed wacker motor and attached a gear to the crank so it could attach to another gear on the crankshaft so I could just have direct power to the wheels using the already existing 21 speed for my mountain bike so it's like I have a transmission and I can go faster or slower without using the throttle and instead of using a twist throttle I used one off of an old snowmobile and I've been able to hit 45 mph with it with no issue my only issue was waiting for my dad to be free so I could use his welder bike crankshaft and to the weed wackers clutch and I just grilled some holes for some brackets to mount the motor and I was able to move the fuel tank up to the top bar of the bike
Also i removed the pedals and put pegs on the front rim to place my feet and a one of those little generators that rub against the tire to power a light and i did a second to power a phone charger
And thankfully I can just use the pull start with key ignition to allow electricity to go into the spark plug did I picked up from AutoZone
And I also don't have to pedal it to get it moving
What app are you using in the video?
Are the crank arms shorter on the one bike or is that just me
Superb video..
How far can you travel with those motors without having them to break or over heat?
Thx. With a 2 stroke, the answer varies because not everyone rides like they should and not everyone has the same gas mixture. If you have less oil in your gas mixture (like a 40:1) then your engine gets hotter a lot quicker and burns itself down much quicker as well because there is not a lot of oil in the gas to help cool and indicate your internals. So that answer could be anywhere from 7-25 miles before a cool down is needed. With a 4 stroke, you can go a lot further because the oil and lubrication is separate and the engine temperature can be regulated better. I have never had to stop before reaching a destination with a 4 stroke; so I can't give a specific milage on that. Yet, if you red line your engine for miles and miles with either engine, of course you won't be able to go as far as if you were just cruising at a steady RPM. Cruising is key for temperature regulation. Thanks for watching, and I hope you come back and check out the channel more in the future! Happy riding ✌️
20 miles max for a 2 stroke and 50 miles for a 4 stroke
The engine temp will stabilize after around 10 mins it won’t keep getting hotter forever.. so no limit
The 2stk has no fan cooling system, (cooling fins on cylinder, head are too small), it relies on free air flow, runs hot, looses power soon, the 4stk has a fan cooling system, much better.
Actually using the recommended 20:1 will cause the engine to overheat as you run the fuel mixture too lean. 32:1 is what most forum experts recommend, but you should also look into playing around with the main jet setting as sometimes the engines are far too rich in main jet mixture. The NT carbs needs careful float level setting and adjusting the circlip on the needle valve.
Great video Mark
For sure, 49cc and 50cc are practically the same size, but just for the record, we are talking 49cc here. And it would have been nice if the gear ratios on both bikes would have been specified.
Specifically 4.11:1 for the 2 stroke and 3.2:1 for the pocketbike X7 transmission, best to run a big rear sprocket (54T~60T) on the pocketbike transmission.