never asks for $$..no annoying pining for support..he has interesting and fun projects, and that sly and jovial outlook, draws us in..one of my favorites for sure..
@@netrioter I wouldn't say "too much". There's definitely way worse offenders than this channel. Even Fred Flintstone smoked Winston cigarettes in the 60's
Several years of enjoying Mustie has finally paid off. I had bought a used chainsaw that wouldn't idle and I was able to retune the carb. Now it runs great! Thanks for the education!
I had a Honda 50 I picked out of the trash when I was 12 or so. I saved my money and put a CT 70 jug, piston and head on it. Scary fast is the word that comes to mind. I wish I still had it. Can’t wait to watch this one!!!
Your knowledge of these engines is really impressive, this allows you to diagnose issues on the fly. A big advantage in repairing them, also your patience is total. I always learn something new, informative and entertaining. You can't beat that.
he hates rebuilding the carbs in videos. but that footage and content in my opinion is crucial to the overall scope of the restore project and even if it gets old and monotonous. we all still want to see you remove and put back four screws mustie1. every one of em
My neighbor used an epoxy coating specifically designed to fix motorcycle tanks. He poured it in, rotated the tank for several minutes, then poured the remainder out. It worked really well. It might be worth a try.
Yeah it's called tank slosh. We used it on aluminum small aircraft tanks.(Yes it's approved by FAA) Works great, just make sure you blow out the outlet tube before it sets up.
I love seeing little machines come back to life!! You know there's a little bit of soul in them that gets excited about the prospect of being loved all over again.
For Sure old bikes like this have stories and personalities that the new chinese plastic junk just can't compete with.and will never last half as long as
Mustie rides again lol another master class enjoyed on a Sunday morning here in the rainy UK. My wife nearly fainted when Mustie rinsed the carb bowl in the shop sink she said “ that’s disgusting he should clean that after use” I tried explaining about a shop sink and oil etc but I lost and just smiled. Thanks Mustie lol. Tom
She would have freaked when I sent the Fiat engine block into the dishwasher for a few cycles at the restaurant I worked at as a kid. It was basically as clean as I could get before doing it but still.
Watching from the UK, its nice to watch someone who doesn't rely on sponsorship doing something he really enjoys. The absolute pleasure that comes from Mustie when he succeeds in rescuing a dead piece of machinery, brings a smile to my face.
@Mustie1 For those tiny parts you don't want to lose in the ultrasonic, get a stainless mesh tea ball. My wife suggested it, and it works like a charm. Fine but open mesh, latches shut, and even has a chain so you can fish it out easily. Awesome for carb jets and other tiny stuff. I use one for watch parts, too.
Pull the cork, put it upside down in the acid. Fix it all the way. You can clean that up, braise or solder it. Fix it properly. It's a cool little bike. Worth a multi-part series where you show us your skills.
This reminds me of my first minibike. After a couple days I got it running and then I learned a Honda CT70 will run without the valve lash adjusters. It ended up with double the displacement, stretched swingarm, disk brakes, shortened forks. Pretty much the works and then I got addicted to cars and now I have no money.
Yep, "Bridgestone" sold by Sears (OEM was Bridgestone Tires thru 1970) ... Monkey Wards mark was "Riverside" ... as I recall. I was poor so couldn't afford either ... had a Gilera 80 as a kid living in N. Italy later ... along with a 1961 Lambretta and Bultaco ... fond memories.
A plastic honda CRF 50 tank is a great option I've used for a couple bikes that I wanted to ride but was not concerned about how the tank looks. They are around $25 and come with a petcock with reserve and everything, might be what you're looking for. Thanks for another Video Mustie, keep wrenching!
Wow I haven’t seen one of these since I was about 12 years old that would’ve been around 1972 Bridgestone Chibi three speed manual when at the time most of the small Hondas had three speed automatics I did see some four-speed manual on the 70s but they were fire and few between this was a two stroke and these things flew compared to the hondas
It;s a Bridestone 60, I had one as a kid LOL If you put it on a hill turn it off and pop the cluch going backwords it will start backwords and run. I could ride mine backwords lol
Thanks for this! Reminds me a lot of my Yamaha JT2M mini enduro I had as a kid. My dad bought it on Easter Sunday 1978 from a guy in town, I was 8. I taught myself how to shift by riding it around the back yard. N was at the top and the gears were 3 down. I put a zillion miles on that bike then handed it off to my little bro.
Good video, I've kept my 1949 Cushman motor scooter running since I was 14, I'm 76 now. Also my old Harley's and a Coleman mini-bike. El Mirage, Arizona
Learned two things just in the background of this video - using a drill index as a thickness gauge and putting the drills in upside down. When the shanks have those inevitable little skid marks and burrs from spinning in sloppy chucks, the drills don't slide back in their holes. I saw all your drills in upside down and the light bulb went on. I'd been wrestling to get the drills in / out of the holes and resorted to filing / grinding down the burrs regularly. So simple - never mind how they came when new, put them in upside down. All these value-added tidbits learned from Mustie1 along with all the "usual" engine / mechanical revival stuff.
You're better off removing galling from drill bit shanks. You were on the right track filing them. The upside down trick is only until you can clean the bits up. You can waffle indexes and then bits don't fit in them right anymore too. Then you have to straighten the sheet metal out.
Gotta agree, its a so/so idea to ruin your tips and score up the cutting surface. Better to just hit the base with a file when it gets to bad, or better yet, guy better hardened bits that don't mushroom so badly like old cheap "high speed steel" ones.
@@nobodynoone2500 the shanks of twist drills are annealed to be soft. That's so they don't just snap off in the chuck when you try to use them. That's why they gall in the first place. High Speed Steel bits are adequate for amateurs. We should only be working with mild steel anyways. If HSS ain't cutting it you need to reevaluate what you're about.
I love seeing old bikes running again.truly show that they just don't make them like they used to is a saying that has real meaning.hope it brings years of enjoyment to another youngster .
Hi Mustie, the year was 1970, I had a Gemini SST 80cc Mini Bike and it was very similar. The bar's, seat and peg's all look the same. Got too big for the Gemini and switched to a Yamaha 100 a year later, then to a Husky 250 and finally a Maico 400 that I still have. The Maico 400 is a 1978 which was the first year of the high ride suspension. I used to really enjoy riding in the woods in Western, Pa. None of my buddies would ride behind me on the Maico because of the big rocks that wide Metzler would throw! Good Vid Mustie, brings back alot of memories! Those were the days...
A cool little bike and another fun repair video :-) BTW - It's called a rotary valve, which is a rotating disk with a hole in it which alligns with the carburetor at the right time. I had a Kawasaki G4 trail bike which had a rotary valve. This was great for the small 100cc engine since it gave a nice wide power band with smooth low end torque. Also, the carburetor is protected from mud and dirt in its own little box.
Gotta love it when Herr Doktor Professor Mustie of all things carborated posts an hour plus video on Sunday. Bondo isn't good to seal gas tanks. JB weld with fine stainless metal sceen will last. Or gas weld some sheet metal over the entire area with holes. I've actually done that on motorcycle gas tanks.
Mustie, try not to use Muriatic Acid inside your shop, it will rust everything up as it evaporates (which can happen over night). The best stuff I found is evaporust, just soak your rusty stuff in it and the rust comes right off (totally safe to handle and breath too).
I agree completely I’ve used the evaporat a couple of times it is Incredibles stuff 20 times better than anything else I have ever used including Coca-Cola
@@Hjerte_Verke No doubt, but in fact Evaporust works by extracting the iron from the rust, with the oxygen joining the breathing supply, and presumably leaving some different, non-corrosive compounds behind. The iron in rust is a lot more available to the material than the underlying iron or steel, so it all works out. That is kind of the ideal approach to removing rust from an iron-based surface.
Got a great tip from James condon…Use a mesh metal ball used for steeping tea. Works great for those small Jets and parts in the ultra sonic. Super cheap too.
You can also put them in a small jar with solvent or even a small plastic one and let it float on top. Learned that trick from Steve, works awesome. Steve's Small engine/ Outdoor Saloon. I forget the name of his channel... I believe he's from Canada
For the clutch slug (lead ball on the end?) you can drill a proper size mold into some treated (wet) wood cut a notch to place the cable in.. drop the cable in the notch and pour melted solder into the sized drilled mold (around the cable) and create your own slug end... I’ve done it quite a few times.. never had one fail 🤷🏼♂️
Back in 1969 the first real motorcycle I ever rode with a clutch was a Bridgestone 60. My oldest brother had one that he used just to get around the Airforce base on. I was thirteen at the time and would ride it only in the commons areas between the base housing because the Air Patrol would nab you if you were on the rode underage. and I believe the Chibi used the same motor.
My parents bought my youngest brother one of these back in the early 70's. Chibi I think it was called. He was 10 I think and weighed all of 70 pounds. Little think was pretty fast, and climbed hills good too. He wishes he still had it to give to his grandsons. It even carried my fat butt around easy as pie. Saw my uncle who weighed a good 230 ride it once, it never even groaned. Good little bikes they were.
Rotary disk valve engine, early Kawasaki's from 60's & 70's were all equipped with a rotary disk valve, first 2 bikes I owned in the 70's were Kwakas, mate had a 90cc full sized Bridgestone bike, it also had same carburetor style, it had a rotary gearbox, you could go from top gear to neutral then first gear without going back through the gears.
The early Yamaha Mini Enduro 60cc engines, were rotary valve engines set up like the one that is on this bike. Those little engines are bulletproof as long as you mix the oil/gas correctly
I had a 1965 Bridgestone 90, that was in 1971, i used it as a dirt bike, same rotary valve setup, top speed was a little over 60mph, it sounded exactly like a sewing machine.
Interesting, John, I was thinking that with all the gears in one direction, it would be nice if being able to go down one more would bring you back to neutral. Of course, easy to be in 3rd and think you're in 2nd and then wind up in neutral, probably not a good idea, especially on a kids bike.
Had one. Chibi. 60cc, 3 spd with a clutch. ..top speed was like 40 mph. Very reliable. Rode mine for years. Original seat had a storage compartment body work attached.
For cleaning old tanks like that i bought ceramic triangles for a de-burring machine to clean them out. I tie the tank to a rope with a little fuel in it and shake the snot out of it they work great and are reusable for years. Also for the smaller carb parts a stainless mesh tea ball works great
I think I'd have just put a new blob of leaded solder on the end of that cable, did the same for a thumb-throttle I got off ebay (generic jobbie), no end on it, drilled a hole in a piece of scrap wood, melted a bunch of 60-40 Tin-Lead solder into it, tinned the cable end, heated the solder back up, drove the cable into the solder with my iron on it, let the flux all bubble off, let it cool, pulled it out, filed and shaped to the carb's throttle piece and sorted... :D
Indeed used to do the same back in the day on both motorbikes and bicycles, it was a little stainless steal funnel ( ro well a few of them in different sizes )that clamped onto the nipple you then fluxed the wire and fed it through the hole in the nipple and you will put a small amount of powdered solder in the funnel (or could use regular, then you heated the base of the funnel with a burner and in a few seconds it melted and flowered into the nipple and cable
I thought I had seen someone do that process with a little blob of lead from an old tire weight, then file it to clean it up a little. Maybe it was solder though. Similar stuff either way
Ive had luck with cutting a piece of brass rod from the hardware store to length, drilling a countersunk hole in it, then flaring the end of the cable so it wont pull through the brass nipple and then dunk it in molten stained glass solder. Then just clean it up. perfect.
That was my first bike! A Rockford Chibi Deluxe, with a 60cc Bridgestone engine. My mom bought it for me during the Summer between 3rd and 4th grade. It had 3 gears with a clutch, and would suck the paint off of my buddy's Honda Mini Trail. I have now been an avid motorcyclist for over 50 years. Thanks for the video. 👍
It will be the top that rusts out first the gas that was in the tank protected the bottom part from the moisture that formed inside the tank , I had the same problem with the gas tank on my lawnmower that was made back in the 70's
I had one of those when I was a kid . Mustie1 you got a good deal at 80 bucks I have been looking for one for my grandson found two in really poor condition for like 400 to 500 I think I paid 600 when I bought mine new.
Darren, at work we used a strand of wire rope from a trailer seal to clean spray nozzles and the like. They typically were smaller than wire brush wires.
That was SO good I started with 2 14 year olds glued to the screen, now there are 4 of them watching this for the 3rd time !!!! :) Just brilliant motivation and skill based learning for them to see a proper engineer working thru a set of problems. I cant thank you enough Mustie.
Bridgestone Chibi (Chee-Bee) are sought after and have a decent resale value, I'd try finding a tank, or braze that one up and bondo and paint it - restored that bike would go for $2500-$5k depending how far you went with plating every fastener and making it brand new with proper seat and decals...... I just did a quick search oneBay and found a BUNCH of NOS & used good parts for Bridgestone Rockford Chibi..... No tanks tho, gotta repair that one, I've fixed MUCH worse, braze or solder the holes and coat the inside with Por-15 or Casewells
Sunday morning, Coffe and Mustie and today a mini bike that for all sense and purpose was very well preserved except for the fuel tank. That was bizarre. Thanks Darren for yet another amazing video
Oh wow little rotory valve twostroke . I would've killed for that at 10 years old 😃😃 is the engine a law/yam? Rebuilt alot of those ke,ks,f7 type rotory valve engines over the years. They make good tourqy power
Hi Musti Another good project I am sure you have repaired many damaged cables using various methods. Wow this one was labour's intensive. If the cable sheath is serviceable I now usually just buy a bicycle cable of appropriate size/length, they are inexpensive, clip the end that you can put the Cale end through and tie a knot in the cable at the appropriate end length. Then solder a blob or bell at the knot. File or grind to shape if required. Regarding the tank, let's see some Mustie style fabrication and repair. Fit some patch panels to the tank and show your audience how to braze them so the tank will not leak.
If you have to save the tank for lack of a replacement, perhaps you could use lead like they used to use for fixing various things. It's a reasonably cheap fix and it would pose a hazard to anyone.
I recently purchased some Caswell gas tank sealer from Walridge Motors (British motorcycle parts supplier) for a vintage Honda. Tried Por-15 but it didn't work as the tank was shot. The Caswell has worked perfect so far.
That green putty on the tank is green "red lead" glazing compound. It's body work material. Basically thick paint. You use it over Bondo or fiberglass or what have you to get a smooth surface. It comes in red and green so you can get contrast sanding. Like red and gray primer scratch coats. I'd just get some tank sealer and put it inside the tank. It rots on the top from condensation.
Make a custom gas tank. You got all the steelworking skills needed from your other restoration video (the one with the truck) and it is always more entertaining to watch something different.
I’m sure you are much too modest and self-effacing, but you should be known to the world as Mustie1 Motor Magician. Your vids are always such a joy to behold! I love that, thanks to you, when I take stuff apart these days, I can generally put ‘em’ back together in slightly better condition. Cheers mate! 🍻
rotary valves were a signature development of Bridgestone they also had a 350 twin also a 250 both street machines not very good quality but quite fast
The Bridgestones were acknowledged as high quality bikes and pricey for Japanese at the time. The 350 in 1968 was quicker than the Honda 750 four and better quality. They sold the Motorcycle division to concentrate on tyre manufacturing which we have to admit they werre good at.
When you are using chemicals to clean petrol tanks out in this day and age with the cost of chemicals I would personally filter all the chemicals put through the tank to clean it through something that has got a 3 Micron filter and save it for your next fuel tank I would estimate you would be able to clean at least three tanks depending how bad they were using the same fluid I just thought this might be an idea to help cut your costs I hope this helps I enjoy watching your videos and I thought this might help just in the case you had never thought of it cheers Derek
Oh man am I enjoying this one! Can't wait to see it finished! Always enjoy your informational and engaging video style. Respect and blessings to the hustle and grind.
you have inspired me to start my own channel working on old (and newer) bikes. I'm almost at the magical 1000 sub level and in less than a year! Thanks for doing what you do and planting that seed for me!
I repaired a cable like that recently. I made a suitable barrel thing on my lathe but you still have the old one. Drill it out and put a chamfer on the far side of the hole. Pass the cable through the hole then fray the cable end in the chamfer the. Then fill the hole with solder to lock it all together. There is a video on my channel of the process 🤠 (For next time)
Hey Mustie, love the mini bike videos. I'm 64 and still asking my wife if I can have a mini bike. Settled for a restored 71 Beetle. As a N.H. native and now a South Carolinian, I reminisce my neighborhood in the early 70's was a hornets nest of mini bikes. Mine was a seriously underpowered Toyo that my dad bought at Western Auto in Dover N.H. It was an all show no go mini bike, that's why I was the one that got by the Police for driving on the road. They got me as I was entering the field and woods at the end of my street. Couldn't out run them. To this day I still think my buddies on their mini bikes ratted on me by identifying me. Oh well I was the fat kid in the neighborhood. Boy do I have mini bike stories! . Those fold down handle bars reminded me of my Toyo.
Had a 1976 Kawasaki KD 175 with the same engine setup. Rotary valve behind the carburetor and clutch mechanism underneath a cover. The spring-loaded clutch pin was very finicky because it had so little movement; unless perfectly cleaned and greased it caused a grabby clutch. Rode the wheels off that thing until I was able to get my first road bike.
never asks for $$..no annoying pining for support..he has interesting and fun projects, and that sly and jovial outlook, draws us in..one of my favorites for sure..
Why would he ask for money? He's a normal guy with a job, not a shithead "influencer" kid
Well put!
Not really..he has too much in-video advertising. Hes no saint..
Uncle Mustie1 is the best... :)
@@netrioter I wouldn't say "too much". There's definitely way worse offenders than this channel. Even Fred Flintstone smoked Winston cigarettes in the 60's
the icing on the cake is the vids showing the local environment. We live in a beautiful country no matter what the news says!
Several years of enjoying Mustie has finally paid off. I had bought a used chainsaw that wouldn't idle and I was able to retune the carb. Now it runs great! Thanks for the education!
The positive result of a miss spent adulthood!
The return of the quiet nature shot at the end of the video was a nice touch
I had a Honda 50 I picked out of the trash when I was 12 or so. I saved my money and put a CT 70 jug, piston and head on it. Scary fast is the word that comes to mind. I wish I still had it. Can’t wait to watch this one!!!
Your knowledge of these engines is really impressive, this allows you to diagnose issues on the fly. A big advantage in repairing them, also your patience is total. I always learn something new, informative and entertaining. You can't beat that.
he hates rebuilding the carbs in videos. but that footage and content in my opinion is crucial to the overall scope of the restore project and even if it gets old and monotonous. we all still want to see you remove and put back four screws mustie1. every one of em
I agree, carb rebuilding is an art in itself, and Mustie never cuts corners. Yeah, I watch every minute.
My neighbor used an epoxy coating specifically designed to fix motorcycle tanks. He poured it in, rotated the tank for several minutes, then poured the remainder out. It worked really well. It might be worth a try.
Yeah it's called tank slosh. We used it on aluminum small aircraft tanks.(Yes it's approved by FAA) Works great, just make sure you blow out the outlet tube before it sets up.
@@tonyking3125 Is tank slosh a trade name, a la Tank Slosh™ or just a slang name for POR15 tank sealer or Red Kote, etc?
I used red kote. Never had an issue since
Check tank sealer " Kreeme " its a liner .....or just JB weld the top for a thrasher mini bike not a show cycle...
@@rdcollector9736 Kreeme and Redcoat ARE NOT immune to Ethanol in modern Obama-Gas - Only Por-15 or Casewells hold up to modern fuel
I love seeing little machines come back to life!! You know there's a little bit of soul in them that gets excited about the prospect of being loved all over again.
Hope someone the correct size gets to enjoy this one, lol 😂
For Sure old bikes like this have stories and personalities that the new chinese plastic junk just can't compete with.and will never last half as long as
Mustie rides again lol another master class enjoyed on a Sunday morning here in the rainy UK. My wife nearly fainted when Mustie rinsed the carb bowl in the shop sink she said “ that’s disgusting he should clean that after use” I tried explaining about a shop sink and oil etc but I lost and just smiled. Thanks Mustie lol. Tom
She would have freaked when I sent the Fiat engine block into the dishwasher for a few cycles at the restaurant I worked at as a kid. It was basically as clean as I could get before doing it but still.
Watching from the UK, its nice to watch someone who doesn't rely on sponsorship doing something he really enjoys.
The absolute pleasure that comes from Mustie when he succeeds in rescuing a dead piece of machinery, brings a smile to my face.
@Mustie1 For those tiny parts you don't want to lose in the ultrasonic, get a stainless mesh tea ball. My wife suggested it, and it works like a charm. Fine but open mesh, latches shut, and even has a chain so you can fish it out easily. Awesome for carb jets and other tiny stuff. I use one for watch parts, too.
it's called a steeper, made to hold tea leaves.
Really cool when it's the wife that suggests it :)
Pull the cork, put it upside down in the acid. Fix it all the way. You can clean that up, braise or solder it. Fix it properly. It's a cool little bike. Worth a multi-part series where you show us your skills.
This reminds me of my first minibike. After a couple days I got it running and then I learned a Honda CT70 will run without the valve lash adjusters. It ended up with double the displacement, stretched swingarm, disk brakes, shortened forks. Pretty much the works and then I got addicted to cars and now I have no money.
Yep, "Bridgestone" sold by Sears (OEM was Bridgestone Tires thru 1970) ... Monkey Wards mark was "Riverside" ... as I recall. I was poor so couldn't afford either ... had a Gilera 80 as a kid living in N. Italy later ... along with a 1961 Lambretta and Bultaco ... fond memories.
Bridgestone were and are awesome. Good machine. Rotary valve, usually chrome bore, oil injected 2 stroke masterpieces.
“I hit the cover with my purse…”
At least one gem in every video!!
Thank you for the video, you are a talented fellow!!
A plastic honda CRF 50 tank is a great option I've used for a couple bikes that I wanted to ride but was not concerned about how the tank looks.
They are around $25 and come with a petcock with reserve and everything, might be what you're looking for.
Thanks for another Video Mustie, keep wrenching!
As trail bikes go. That one is in great condition. Amazing! Thanks for sharing 🙂
Wow I haven’t seen one of these since I was about 12 years old that would’ve been around 1972 Bridgestone Chibi three speed manual when at the time most of the small Hondas had three speed automatics I did see some four-speed manual on the 70s but they were fire and few between this was a two stroke and these things flew compared to the hondas
Cool little bike!..nice recovery!..Ive said it before..you find the best stuff at your local yard sales!
That open bolt hole in front of engine possibly may be for a rock guard accessary that protects the bottom of motor. Just a guess. 🙄
Few days ago I fix my handbrake cable just like you do it that why I like to watch you nice jobs now I can stop my car anywhere ...thanks 👍👍👍
It;s a Bridestone 60, I had one as a kid LOL If you put it on a hill turn it off and pop the cluch going backwords it will start backwords and run. I could ride mine backwords lol
Thanks for this! Reminds me a lot of my Yamaha JT2M mini enduro I had as a kid. My dad bought it on Easter Sunday 1978 from a guy in town, I was 8. I taught myself how to shift by riding it around the back yard. N was at the top and the gears were 3 down. I put a zillion miles on that bike then handed it off to my little bro.
Obviously, the minibike videos are my favorite. Looking forward to Part 2.
Good video, I've kept my 1949 Cushman motor scooter running since I was 14, I'm 76 now. Also my old Harley's and a Coleman mini-bike.
El Mirage, Arizona
Learned two things just in the background of this video - using a drill index as a thickness gauge and putting the drills in upside down. When the shanks have those inevitable little skid marks and burrs from spinning in sloppy chucks, the drills don't slide back in their holes. I saw all your drills in upside down and the light bulb went on. I'd been wrestling to get the drills in / out of the holes and resorted to filing / grinding down the burrs regularly. So simple - never mind how they came when new, put them in upside down. All these value-added tidbits learned from Mustie1 along with all the "usual" engine / mechanical revival stuff.
You're better off removing galling from drill bit shanks. You were on the right track filing them. The upside down trick is only until you can clean the bits up. You can waffle indexes and then bits don't fit in them right anymore too. Then you have to straighten the sheet metal out.
Indeed
Gotta agree, its a so/so idea to ruin your tips and score up the cutting surface. Better to just hit the base with a file when it gets to bad, or better yet, guy better hardened bits that don't mushroom so badly like old cheap "high speed steel" ones.
@@nobodynoone2500 the shanks of twist drills are annealed to be soft. That's so they don't just snap off in the chuck when you try to use them. That's why they gall in the first place. High Speed Steel bits are adequate for amateurs. We should only be working with mild steel anyways. If HSS ain't cutting it you need to reevaluate what you're about.
I love seeing old bikes running again.truly show that they just don't make them like they used to is a saying that has real meaning.hope it brings years of enjoyment to another youngster .
I love all Mustie’s videos, but especially the classics, like snowblowers, lawnmowers and mini bikes.
Hi Mustie, the year was 1970, I had a Gemini SST 80cc Mini Bike and it was very similar. The bar's, seat and peg's all look the same. Got too big for the Gemini and switched to a Yamaha 100 a year later, then to a Husky 250 and finally a Maico 400 that I still have. The Maico 400 is a 1978 which was the first year of the high ride suspension. I used to really enjoy riding in the woods in Western, Pa. None of my buddies would ride behind me on the Maico because of the big rocks that wide Metzler would throw! Good Vid Mustie, brings back alot of memories! Those were the days...
A cool little bike and another fun repair video :-) BTW - It's called a rotary valve, which is a rotating disk with a hole in it which alligns with the carburetor at the right time. I had a Kawasaki G4 trail bike which had a rotary valve. This was great for the small 100cc engine since it gave a nice wide power band with smooth low end torque. Also, the carburetor is protected from mud and dirt in its own little box.
Yes I had a Suzuki TS90 and the best part was Suzuki had a parts list in the back of their workshop manual to turn it intoa track bike OH happy days😁
That’s cool, I guess I still do learn something new every day.
My first bike was a Kawasaki G5e... The F7 was a big step up from that one too.
@@johnmccallum8512 I love those small Japanese trail bikes. Your Suzuki TS90 looks very similar to my Kawasaki G4. Super awesome and super fun :-)
Gotta love it when Herr Doktor Professor Mustie of all things carborated posts an hour plus video on Sunday.
Bondo isn't good to seal gas tanks.
JB weld with fine stainless metal sceen will last.
Or gas weld some sheet metal over the entire area with holes.
I've actually done that on motorcycle gas tanks.
First kick…..and sweet as a nut, quite impressive for an old 2 stroke…..👍💪
very impressive, thing runs like new and god knows if it was ever rebuilt
Nice little bike should be a lot of fun can't wait to see you finish it thank you for sharing five stars my friend
Mustie, try not to use Muriatic Acid inside your shop, it will rust everything up as it evaporates (which can happen over night). The best stuff I found is evaporust, just soak your rusty stuff in it and the rust comes right off (totally safe to handle and breath too).
I agree completely I’ve used the evaporat a couple of times it is Incredibles stuff 20 times better than anything else I have ever used including Coca-Cola
Toilet bowl cleaner works too. Don't leave it in too long.
Ah but you gotta be smarter than the average bear to safely use muriatic acid. I think Mustie qualifies despite what the Nancy Safety Brigade thinks.
@@Hjerte_Verke No doubt, but in fact Evaporust works by extracting the iron from the rust, with the oxygen joining the breathing supply, and presumably leaving some different, non-corrosive compounds behind. The iron in rust is a lot more available to the material than the underlying iron or steel, so it all works out. That is kind of the ideal approach to removing rust from an iron-based surface.
I bought some citric acid off Amazon and that is what I use to remove rust, it works great.
Love your ending, with shots of the New England coast. Prescott Park would also be a nice "brag shot!" Nothing like New England!
Looks like a well made solid little bike.
Nice find.
Got a great tip from James condon…Use a mesh metal ball used for steeping tea. Works great for those small Jets and parts in the ultra sonic. Super cheap too.
should also work to put a half cup of cleaner in a ziplock bag with the jet and throw that in the ultrasonic cleaner
Or the little baskets that watchmakers use for small parts.
You can also put them in a small jar with solvent or even a small plastic one and let it float on top. Learned that trick from Steve, works awesome. Steve's Small engine/ Outdoor Saloon. I forget the name of his channel... I believe he's from Canada
For the clutch slug (lead ball on the end?) you can drill a proper size mold into some treated (wet) wood cut a notch to place the cable in.. drop the cable in the notch and pour melted solder into the sized drilled mold (around the cable) and create your own slug end... I’ve done it quite a few times.. never had one fail 🤷🏼♂️
mustie1 that oceanside view was freaking awesome. must be a beautiful part of the country where you reside
That custom inner tube seat….
Oh my! imagine how comfortable air ride would be if it actually holds air!
I've seen much worse Cob jobs in my day.
every single video i watch on this channel is just excellent. always learning something new and never manage to get bored. keep up the great videos
Back in 1969 the first real motorcycle I ever rode with a clutch was a Bridgestone 60. My oldest brother had one that he used just to get around the Airforce base on. I was thirteen at the time and would ride it only in the commons areas between the base housing because the Air Patrol would nab you if you were on the rode underage. and I believe the Chibi used the same motor.
Fun watching you diagnose and make components work again.
My parents bought my youngest brother one of these back in the early 70's. Chibi I think it was called. He was 10 I think and weighed all of 70 pounds. Little think was pretty fast, and climbed hills good too. He wishes he still had it to give to his grandsons. It even carried my fat butt around easy as pie. Saw my uncle who weighed a good 230 ride it once, it never even groaned. Good little bikes they were.
$200 I think when my dad bought this for me. Early '70s sold the horses and bought this never looked back.
You can tell someone had a lot of fun on that little bike.
Gas tank sealer is what's used in vintage fuel tanks to stop rust from continuing. It's commonly used on old tractors. POR 15 has a kit for about $23.
Caswell tank sealer is 10 times better and won't flake. Caswell is a 2 part epoxy sealer designed for fuel. Race fuel will breakdown Caswell tho.
Got to love how you love bringing stuff back from the dead ☺️
Rotary disk valve engine, early Kawasaki's from 60's & 70's were all equipped with a rotary disk valve, first 2 bikes I owned in the 70's were Kwakas, mate had a 90cc full sized Bridgestone bike, it also had same carburetor style, it had a rotary gearbox, you could go from top gear to neutral then first gear without going back through the gears.
The early Yamaha Mini Enduro 60cc engines, were rotary valve engines set up like the one that is on this bike. Those little engines are bulletproof as long as you mix the oil/gas correctly
I had a 1965 Bridgestone 90, that was in 1971, i used it as a dirt bike, same rotary valve setup, top speed was a little over 60mph, it sounded exactly like a sewing machine.
Interesting, John, I was thinking that with all the gears in one direction, it would be nice if being able to go down one more would bring you back to neutral. Of course, easy to be in 3rd and think you're in 2nd and then wind up in neutral, probably not a good idea, especially on a kids bike.
@@richardwernst Too often my friend would end up in first while moving too fast and the backend would slide out behind him and the motor scream
Had one. Chibi. 60cc, 3 spd with a clutch. ..top speed was like 40 mph. Very reliable. Rode mine for years. Original seat had a storage compartment body work attached.
A homemade inner tube seat sounds like a good idea.
1:01 h/m in...drill the handle...I recognize that cable end as VW style...retired VW guy...Love ur videos...TY Mustie!!!
For cleaning old tanks like that i bought ceramic triangles for a de-burring machine to clean them out. I tie the tank to a rope with a little fuel in it and shake the snot out of it they work great and are reusable for years. Also for the smaller carb parts a stainless mesh tea ball works great
Really enjoy watching your videos -always learning something new. Thanks for allowing us into your domain .
I think I'd have just put a new blob of leaded solder on the end of that cable, did the same for a thumb-throttle I got off ebay (generic jobbie), no end on it, drilled a hole in a piece of scrap wood, melted a bunch of 60-40 Tin-Lead solder into it, tinned the cable end, heated the solder back up, drove the cable into the solder with my iron on it, let the flux all bubble off, let it cool, pulled it out, filed and shaped to the carb's throttle piece and sorted... :D
Indeed used to do the same back in the day on both motorbikes and bicycles, it was a little stainless steal funnel ( ro well a few of them in different sizes )that clamped onto the nipple you then fluxed the wire and fed it through the hole in the nipple and you will put a small amount of powdered solder in the funnel (or could use regular, then you heated the base of the funnel with a burner and in a few seconds it melted and flowered into the nipple and cable
Same here. Works great.
Just kinda wondering why he didn’t switch the cable around and use the solder to make a new end. Awesome job.
I thought I had seen someone do that process with a little blob of lead from an old tire weight, then file it to clean it up a little. Maybe it was solder though. Similar stuff either way
Ive had luck with cutting a piece of brass rod from the hardware store to length, drilling a countersunk hole in it, then flaring the end of the cable so it wont pull through the brass nipple and then dunk it in molten stained glass solder. Then just clean it up. perfect.
That was my first bike! A Rockford Chibi Deluxe, with a 60cc Bridgestone engine. My mom bought it for me during the Summer between 3rd and 4th grade. It had 3 gears with a clutch, and would suck the paint off of my buddy's Honda Mini Trail. I have now been an avid motorcyclist for over 50 years. Thanks for the video. 👍
It will be the top that rusts out first the gas that was in the tank protected the bottom part from the moisture that formed inside the tank , I had the same problem with the gas tank on my lawnmower that was made back in the 70's
My very favorite online mechanics instructions..I've learned a lot just watching his vids
I had one of those when I was a kid .
Mustie1 you got a good deal at 80 bucks I have been looking for one for my grandson found two in really poor condition for like 400 to 500 I think I paid 600 when I bought mine new.
Darren, at work we used a strand of wire rope from a trailer seal to clean spray nozzles and the like. They typically were smaller than wire brush wires.
Mustie time. Happy Sunday people
Back at ya
That was SO good I started with 2 14 year olds glued to the screen, now there are 4 of them watching this for the 3rd time !!!! :) Just brilliant motivation and skill based learning for them to see a proper engineer working thru a set of problems. I cant thank you enough Mustie.
You can save that tank pretty easily just cover the holes up with jb weld and then line it with red kote and boom fixed.
being a mechanic mysel i enjoyed that stay safe brother and see u in your next project.
Bridgestone Chibi (Chee-Bee) are sought after and have a decent resale value, I'd try finding a tank, or braze that one up and bondo and paint it - restored that bike would go for $2500-$5k depending how far you went with plating every fastener and making it brand new with proper seat and decals......
I just did a quick search oneBay and found a BUNCH of NOS & used good parts for Bridgestone Rockford Chibi..... No tanks tho, gotta repair that one, I've fixed MUCH worse, braze or solder the holes and coat the inside with Por-15 or Casewells
Sunday morning, Coffe and Mustie and today a mini bike that for all sense and purpose was very well preserved except for the fuel tank. That was bizarre. Thanks Darren for yet another amazing video
WOW, lot of hackery going on with that bike,LOL. Anything to keep it running! Thanks, Mustie1 for the Vids as always. :)
Nothing more satisfying than a carb clean and a 1st kick start🤘
Up for three hours waiting for this!!
Why stay up waiting, sleep then watch when you are up. It's not changing the quality or anything by watching later.
Sunday mornings start with a Mustie video, and breakfast.
Thanks.
Chris,
Gatineau, Quebec, Canada
Oh wow little rotory valve twostroke . I would've killed for that at 10 years old 😃😃 is the engine a law/yam? Rebuilt alot of those ke,ks,f7 type rotory valve engines over the years. They make good tourqy power
You make the best videos I really enjoy to watch your work.
interesting engine design! never seen the carb INSIDE the engine case before lol.
That is to allow direct entry of the mix into the end of the crankcase with the rotary valve....no reeds.
Hi Musti Another good project I am sure you have repaired many damaged cables using various methods. Wow this one was labour's intensive. If the cable sheath is serviceable I now usually just buy a bicycle cable of appropriate size/length, they are inexpensive, clip the end that you can put the Cale end through and tie a knot in the cable at the appropriate end length. Then solder a blob or bell at the knot. File or grind to shape if required. Regarding the tank, let's see some Mustie style fabrication and repair. Fit some patch panels to the tank and show your audience how to braze them so the tank will not leak.
the cable broke from the cable barrel sizing in the lever causing the barrel to twist back and forth breaking the cable
yeah it sounds pretty good... even the rattling sounds nice...
If you have to save the tank for lack of a replacement, perhaps you could use lead like they used to use for fixing various things. It's a reasonably cheap fix and it would pose a hazard to anyone.
I recently purchased some Caswell gas tank sealer from Walridge Motors (British motorcycle parts supplier) for a vintage Honda. Tried Por-15 but it didn't work as the tank was shot. The Caswell has worked perfect so far.
When are you gonna do another non running diesel? I think those are the most interesting to watch, especially if they dont run at first
That green putty on the tank is green "red lead" glazing compound. It's body work material. Basically thick paint. You use it over Bondo or fiberglass or what have you to get a smooth surface. It comes in red and green so you can get contrast sanding. Like red and gray primer scratch coats. I'd just get some tank sealer and put it inside the tank. It rots on the top from condensation.
Leave it to Mustie to have a purse in his toolbox!
I was waiting for this video! I remember your garage sale video when you picked this up! My cousin had one just like it when we were kids.
Make a custom gas tank. You got all the steelworking skills needed from your other restoration video (the one with the truck) and it is always more entertaining to watch something different.
I’m sure you are much too modest and self-effacing, but you should be known to the world as Mustie1 Motor Magician.
Your vids are always such a joy to behold!
I love that, thanks to you, when I take stuff apart these days, I can generally put ‘em’ back together in slightly better condition.
Cheers mate! 🍻
rotary valves were a signature development of Bridgestone they also had a 350 twin also a 250 both street machines not very good quality but quite fast
The Bridgestones were acknowledged as high quality bikes and pricey for Japanese at the time. The 350 in 1968 was quicker than the Honda 750 four and better quality. They sold the Motorcycle division to concentrate on tyre manufacturing which we have to admit they werre good at.
When you are using chemicals to clean petrol tanks out in this day and age with the cost of chemicals I would personally filter all the chemicals put through the tank to clean it through something that has got a 3 Micron filter and save it for your next fuel tank I would estimate you would be able to clean at least three tanks depending how bad they were using the same fluid I just thought this might be an idea to help cut your costs I hope this helps I enjoy watching your videos and I thought this might help just in the case you had never thought of it cheers Derek
Yes a Mustie video!!!!
Oh man am I enjoying this one! Can't wait to see it finished! Always enjoy your informational and engaging video style. Respect and blessings to the hustle and grind.
Super video. and great commentary the best on UA-cam. Really admire your positive, yet easy approach to each challenge. Thank you.
More time and effort than I've ever spent on a clutch cable... Great job, as always.
"Hit it with your purse!" Hahaha I never heard that one before. The closing shot was worth a million bucks. Thanks dude.
you have inspired me to start my own channel working on old (and newer) bikes. I'm almost at the magical 1000 sub level and in less than a year! Thanks for doing what you do and planting that seed for me!
I like the inner tube seat cover,,, What a clever idea to make a functional cover with out spending any money,,, :-)
I repaired a cable like that recently. I made a suitable barrel thing on my lathe but you still have the old one.
Drill it out and put a chamfer on the far side of the hole. Pass the cable through the hole then fray the cable end in the chamfer the. Then fill the hole with solder to lock it all together.
There is a video on my channel of the process 🤠
(For next time)
This is why we have UA-cam. Instructional videos. Mustie 1 you Sir, You Rock!
Hey Mustie, love the mini bike videos. I'm 64 and still asking my wife if I can have a mini bike. Settled for a restored 71 Beetle. As a N.H. native and now a South Carolinian, I reminisce my neighborhood in the early 70's was a hornets nest of mini bikes. Mine was a seriously underpowered Toyo that my dad bought at Western Auto in Dover N.H. It was an all show no go mini bike, that's why I was the one that got by the Police for driving on the road. They got me as I was entering the field and woods at the end of my street. Couldn't out run them. To this day I still think my buddies on their mini bikes ratted on me by identifying me. Oh well I was the fat kid in the neighborhood. Boy do I have mini bike stories! . Those fold down handle bars reminded me of my Toyo.
Had a 1976 Kawasaki KD 175 with the same engine setup. Rotary valve behind the carburetor and clutch mechanism underneath a cover. The spring-loaded clutch pin was very finicky because it had so little movement; unless perfectly cleaned and greased it caused a grabby clutch. Rode the wheels off that thing until I was able to get my first road bike.
I remember as a Rockwell Chibi, I may still have a brochure!
Videos like these keep me sane, thank you sir.
Soldering the end of bare cables helps strengthen them to use adapters or jamb nuts, no fraying or flairing of the end!