some very nice engineering here...apart from the engine, the trike is neatly made and the little holder for the airspeed indicator is very nice. Well done, RB.
Brilliant. Thee are so many things we do out of convention. I once asked a online group about using non-certified plywood for ribs. "NO WAY!!", they said, "you'll die a horrific death". Then I asked about using foam insulation for ribs and they were all cool with that. "But it's not certified foam....", I said. They didn't see a problem. Keep using chains. IMHO it doesn't even need an idler. If it works, it works.
My guess is it is better without the idler. There have been some broken cranks from flywheel to prop resonance on these things. If there is slack on the "no power" side of the chain, it should eliminate 1/2 of the load oscillation . . . keeps from generating a complete stress reversal on the crank.
We built a good part of our bi-plane in our driveway. Our neighbors acted as if we were mad scientists or something. This was back before kits when everything was plans built.
You could have gone with lighter chain and sprockets, saved yourself some weight but that being said I understand the desire to error on the side of caution. I'm really impressed with the whole set up, very nice. I'm planing on getting into ultralights but having a lifetime of experience with motorcycles so I'm not a fan of using 2 cycle engines. They're loud and temperamental, two things I really don't want while flying. Thanks for posting these videos, they're very inspiring.
Reminds me of a Pete Jackson gear drive for a small block Chevy, or a jesel belt drive for a timing chain replacement, harmonics being the main reason with weight and durability as second and third reasons, I love your version and think it's bulletproof and well matched to the use, kind of Russian in strength and simplicity
I wonder if the vertical version of this engine could be adapted with a gear drive, considering the vertical version is going to be much more common to find cheap and used in the wild... considering the vertical version is used on riding lawn mowers....
Hello Ron I have a phantom with the 50 hp big twin I have a zenith carb but have been thinking of changing to a mickuni carb so I can rejet for higher elevation not sure what all I need for the change over 990 cc and also I took the pulse pump off just using the electric pump but just wanted to pick your brain on the matter Tom Lawrence.
Excellent drive Ron. I would like to use a chain drive on my hovercraft . Have a 15HP 420cc engine and a 42" Dia Multiwing 3 blade fan. What chain size would you suggest and where can I get sprocket for 1" drive and driven shafts ? THANKS
@@dehoedisc7247 AussiebirdGreg on the MagMen site drug a B1-RD on a single axle trailer about 20' long almost 200 miles home to Gympie behind a motorcycle.
pretty kool. I have been running these engines on Sevtec design hovercraft for 15 years & love them. always start and work. light weight, great power and fuel consumption. Honda and Briggs both gave me carb ice at times, the Kohler never did. the only thing I would add to what he said is.... safety wire the mufflers. they can fatigue over the years & break off.... then they might go places you wish they didn't. how do I know these things.....
@@MSCNCArtshop sorry, no... too long ago. still running the craft though. I had a bunch of vids on the Sevtec forum but the old ones have faded. if yo want to see some action go here. I am beezer... sevteckits.com/phpBB/viewforum.php?f=16
If you wanted to do a direct drive on that engine can you just machine a Thrust bearing from like a transmission or something into the case cover that goes on the end of the crankshaft. I realize it wouldn't be as efficient I'm just wondering if it could be actually done.
I have a B1RD and it had the 30 hp. cyunna(?) it flew well but the sun did it in during storage Am very interested in the kohler for a different project. how much does the thing weigh(kohler) stripped and ready to fly?
I have one question.... How does this redrive doesnt need thrust bearing,dont get me wrong, I think its a beautiful redrive and Im sure it works like a charm but im just confused mostly because im novice to the whole thing. So aircraft has to be pulled or pushed trough air and I don't see how that doesn't affect the redrive shaft
nice work.... I really like your reduction drive. just a comment about carb heat...when you were checking the temps you said the manifold was @165 so carb heat was good... the manifold temp doesn't have any effect on carb icing.. usually you want to heat the air going into the carb that's how you prevent the jet from icing over.
balancing conversation........... I understand a new prop would not be balanced but how well is a V-twin crank balanced? im sure you probably are already better than normal with the added billet flywheel but would not the vibration be multiplied off of a direct drive? I have had a direct drive fan on my boat (go to my channel there's a video). in my experience a 42" 4 blade direct drive vs. a 48" 6 blade on a reduction give just as much vibration through the boat at idol. neither give much vibration at wot. although v-twins idol rough the Honda gx630 reacted the same from 900-1200rpm. my theory was a unbalanced crank.
Hey sir good morning iam sure you are fine..so my question is regarding..... Minimum how much HP engine we need for ultralight aircraft .... please help me sir... please please
Think about over-tightened lug nuts. Standing on the lug wrench doesn't loosen them(180 ft lbs?), but a 2 lb hammer does easily. You've got two hammers against each other in this system, the prop and the crank What's going to give? Crank? Bearings? Rods? Probably not the chain! :-) Maybe nothing will give, but Rotax puts rubber shock absorbers in their gearboxes. They think a system without damping is unreliable. The chain has a little more give than gears, but there is still a lot of shock possible. Does the chain mass and slack provide enough shock absorption long term? IMHO, spring loaded idler would be much better.
Ana Carrillo Hi Ana, Rotax did not put rubber bushings inside the 447 and 503 "B" gear box. I have had about 4 or more of them both Provision 4 and Provision 8 (4 bolt and 8 bolt pattern). They may have in some models like the "E" or "C" but not the "B". Someone with more experience than me with Rotax product line could jump in and help (save) me here --- Please!!! To my point about the chain, the gears in the boxes only have 3 teeth at any given moment touching. One on the small drive gear and one on each side of the larger propeller gear. Not much surface area at all, but it works great. I really like the Rotax gear boxes. It's funny that no one thinks about the vibrations, pulses, back lash energy loads, and thrust loads that direct drive engines handle with a massive metal propeller or even larger wooden ones. Depending on the size of the propeller, they have rpms that the pilot must not stay at very long or they pick up a resonation frequency (vibration) that can cause damage to the engine.It's like a tuning fork affect. Also, If we were spinning a flat disk with lots of mass and suddenly let off power then we would get a back slap affect that over time could really wear on the engine internals and for sure the redrive parts, but with the propeller more gently slows down with the engine, because it's under load compressing air as intended. Your idea for the spring loaded idler is a wonderful idea for sure. I looked into them before mounting the one I have on there now. If I was going to mass produce these things, then I would most likely go with one and redesign the whole back plate to make room. Even better would be to go with the whole thing inside a casting like the Rotax gear box with an oil bath. I wanted (for me anyway) to make this as simple and light as possible and still be reliable. I also have to keep the whole plane under the 254 lbs rule for PAR 103.It's not that I think this is the best way to build something, I just wanted to see if it would work. It's like cluster balloon flying. Is it really the best way to fly? I guess it depends on who you ask. I really have had no problems at all with this setup. I have had this engine in two different planes and been tinkering with it for 7 years now. Thanks so much for watching and commenting, I really do enjoy the conversations, because it's all about learning and experimenting. Sincerely, Ron Besse.
Blankbiplane It was an E Box. Here's the blowup. Its part #6 www.ultralightnews.com/rotaxinfo/rotaxgearbox-e.html Was it added later? I hope you do some more with this. There are a lot of aluminum block engines around now. I would like to try this on an airboat if I stay in South FL. A Raven Redrive could easily cost 2 or 3 times the motor, so there's room for some savings. I saw this on an airboat site about chain cases: "Leave lots of room in the case for the chain. In a snowmobile when the chain breaks in the chaincase it folds up on itself and quite literally explodes the case. It has nowhere to go. Happened to me this winter. not a pretty sight....." Also this story: "In my younger days when I lived on the Texas coast a friend of my dad and about half outlaw had a small airboat.This boat was rigged for floundering,and in my feeble brain I think it was a 5 by 12 hull. He outran every game warden around . He was running a Wisconsin air cooled engine ,wood prop and a chain drive. It was a pretty simple set up as I remember it ,sprocket on the motor , a shaft mounted in two pillow block bearing with a larger sprocket on top and the prop mounted on the same shaft. In the five years I knew him he was running 2 or 3 times a week and I don't remember him ever throwing a chain ."
Ana Carrillo Hi Ana, I think this would be a blast on a small air-boat. On the trike I'm doing 35 mph in 5 seconds and 45 mph in about 2-3 more seconds. That's the fastest I have the coordination to do steering with my feet with such a short wheel base. I have a Suzuki street bike steering dampener using 40 weight motor oil, and it still gets tricky after 45 mph. With the wing, your up after about 32 mph. It's really starting to pull after 35 mph. Not sure what top end would be in a small converted Jon- boat??? Now that would be fun to find out!!!! I don't have enough sense to be careful like I should. If it looks like fun, then I just go for it. Crashed a lot of stuff over the years, and I'm getting older. I'd look like Mr. Potato Head if I crashed now. Someone would have to go out and pickup all the peaces. I don't bounce like I use to, but that I would have to try. Thanks again for the conversation and for the E-box information, it's good to know. I've heard that Rotax used them on something, but I never knew what. I thought it may have been on the 912 and 914 models. Sincerely, Ron Besse.
+Ana Carrillo, I get what you are imagining with the standing on a lug wrench vs a hammer but it's comparing apples to apples. Kinetic energy still just transfers to foot-pounds either way. I.E. If a 180 pound person were to hop on that lug wrench the kinetic energy would make that persons weight 300 pounds and also free the stuck lug just like a dead blow hammer. Back to the chain, I have no experience with planes but I have a lifetime of experience on motorcycles and as a millwright. There is literally nothing that engine and prop could do that would damage that chain. I've seen electric motors in a factory with five time the torque rip structural steel and snap shafts before that chain would break. From a millwrights perspective there is no weak link in this system based on it's output being nothing more than a fan blade.
Brian Hagmeier I agree, perhaps with a damaged prop or bearing failure but it's separated the thrust torque from the radial torque away from the crank quite well. This setup remind me of a Pete Jackson gear drive for a small block Chevy
I love the simplicity and ruggedness of the reduction drive. Very good and solid engineering. Are there any specs on the bearings holding the horizontal thrust? i.e. is the reduction drive bearings thrust beatings?
ot1k Hi ot1k, The engine rotates counter clock wise if you are looking from the back (windy side). Pulling down on left side and pushing up on the right. Its hard to tell in the video. Thanks so much for watching and commenting. Sincerely, Ron Besse.
That's right, my bad :) I love the sound of V engines. Realy nice job. I'm using gx200 engine in my hang glider, 1st was direct drive and was working not bad but now i'm using more efficient 49 inch propeller- it pushes stronger and is more fuel efficient. i'm using 1-1.5liter (1/4-2/5 gallon) of fuel in 1 hour :-)
ot1k Too Cool, love to see some pictures. That has to be a blast for sure. I just feed off this experimenting stuff. Hang Gliding has to be amazing. I'm guessing you could cruise up, shut off the engine, and catch thermals? Just to glide down without engine noise would be awesome. Total freedom. Heavier trikes come down too fast. Thanks, I just slipped into a flying dream like coma. Ron.
Hello what size chain and sprockets are u useing ? I want to order the same what are measurements of chain n sprocket. ? I not sure how chain sizes are said. Or sprocket types n sizes thank you
I'm curious, did you ever put a wing on this? Some hours? BTW, there's a guy who built a electric Paramotor with a chain drive juicedparamotors.yolasite.com/v1-construction.php On a later version, he switched to a timing belt that looks sketchy as for power handling. I can't fine where he gave a reason for abandoning chain drive.
Based on your math, you lost me when you said that the Rotax and Kohler put out the same HP. 44.7x6000/5252=51 HP and 42.3x2400/5252=19 HP both fairly close to MFG specs. Are you getting the extra HP by running the Kohler at 5200 RPM? 42.3x5200/5252=42HP? Even with the history you have of with the engine, seems like you are making quite a few assumptions.
I don't care how long you been doing this or whatever because of the high resonance of the motor and propeller that chain will cause damage to your crankshaft it's not like a motorcycle a motorcycle is not a propeller, a motor should drive the propeller but the propeller should never drive the motor you would be much better off with a double or triple belt drive with a spring tensioner pulley, you don't believe me? just listen to How it slams when you shut it off and you have just the back of that flimsy seat to keep your head from flying back into the flywheel
Dude has used this setup for 7 years. Instead of assuming and criticizing, perhaps some thought and information gathering before you comment. You will look like a dumbass less frequently for your efforts !
doesn,t work...........spent like 1000 bucks fabricating a oil inclosed chain drive on a clone 460cc engine, destroyed chains in 5 mins, tight links, oil full of fillings, might of worked with a clutch or cush drive. ended up with belt drive and is faultless
some very nice engineering here...apart from the engine, the trike is neatly made and the little holder for the airspeed indicator is very nice. Well done, RB.
Brilliant. Thee are so many things we do out of convention. I once asked a online group about using non-certified plywood for ribs. "NO WAY!!", they said, "you'll die a horrific death". Then I asked about using foam insulation for ribs and they were all cool with that. "But it's not certified foam....", I said. They didn't see a problem.
Keep using chains. IMHO it doesn't even need an idler. If it works, it works.
My guess is it is better without the idler. There have been some broken cranks from flywheel to prop resonance on these things. If there is slack on the "no power" side of the chain, it should eliminate 1/2 of the load oscillation . . . keeps from generating a complete stress reversal on the crank.
Very nicely designed installation Ron....thank you for this extra information!
We built a good part of our bi-plane in our driveway. Our neighbors acted as if we were mad scientists or something. This was back before kits when everything was plans built.
You could have gone with lighter chain and sprockets, saved yourself some weight but that being said I understand the desire to error on the side of caution. I'm really impressed with the whole set up, very nice.
I'm planing on getting into ultralights but having a lifetime of experience with motorcycles so I'm not a fan of using 2 cycle engines. They're loud and temperamental, two things I really don't want while flying. Thanks for posting these videos, they're very inspiring.
Liked & subscribed! Now................binge-watching your stuff. Thank you Ron for awesome video and content.
Reminds me of a Pete Jackson gear drive for a small block Chevy, or a jesel belt drive for a timing chain replacement, harmonics being the main reason with weight and durability as second and third reasons, I love your version and think it's bulletproof and well matched to the use, kind of Russian in strength and simplicity
At last, someone else who believes in chain drive for aviation. nice video - Thanks
I like the simplicity of your reduction drive, and agree that chain is at least 3X more than adequate, and great video btw
Getting close to the same torque at 2.5 times less RPM is awesome.
Any further development on this project ? Any flying videos ?
I wonder if the vertical version of this engine could be adapted with a gear drive, considering the vertical version is going to be much more common to find cheap and used in the wild... considering the vertical version is used on riding lawn mowers....
Hi...
It is a very good idea to oversize the chain of the R.U because there are pulsating loads that come from the crankshaft.
I love it man great job 👍
Kohler is infamous about bolts backing out and cracking the block. You might want to wire tie some of them. Especially the case bolts.
Hello Ron I have a phantom with the 50 hp big twin I have a zenith carb but have been thinking of changing to a mickuni carb so I can rejet for higher elevation not sure what all I need for the change over 990 cc and also I took the pulse pump off just using the electric pump but just wanted to pick your brain on the matter Tom Lawrence.
Excellent drive Ron. I would like to use a chain drive on my hovercraft . Have a 15HP 420cc engine and a 42" Dia Multiwing 3 blade fan. What chain size would you suggest and where can I get sprocket for 1" drive and driven shafts ? THANKS
I just love the way you Yanks drive anything on the road :)
GreenFillwood ... That's because we have lots of room.
As if there ain't lots and lots and Lots of room Down Unda. And a hell of a lot Fewer people !
@@dehoedisc7247 AussiebirdGreg on the MagMen site drug a B1-RD on a single axle trailer about 20' long almost 200 miles home to Gympie behind a motorcycle.
pretty kool. I have been running these engines on Sevtec design hovercraft for 15 years & love them. always start and work. light weight, great power and fuel consumption. Honda and Briggs both gave me carb ice at times, the Kohler never did. the only thing I would add to what he said is.... safety wire the mufflers. they can fatigue over the years & break off.... then they might go places you wish they didn't. how do I know these things.....
Hi Tom, do you have a youtube channel doccumenting your sevtec build, I would love to see
@@MSCNCArtshop sorry, no... too long ago. still running the craft though. I had a bunch of vids on the Sevtec forum but the old ones have faded. if yo want to see some action go here. I am beezer... sevteckits.com/phpBB/viewforum.php?f=16
@@MSCNCArtshop tons of vids stuck n a bad computer but ... then there this... ua-cam.com/video/-gJ1xAI3kjc/v-deo.html
If you wanted to do a direct drive on that engine can you just machine a Thrust bearing from like a transmission or something into the case cover that goes on the end of the crankshaft. I realize it wouldn't be as efficient I'm just wondering if it could be actually done.
good job the typical auto engine timing chain and gears might be a consideration but they are2 to 1
I have a B1RD and it had the 30 hp. cyunna(?) it flew well but the sun did it in during storage Am very interested in the kohler for a different project. how much does the thing weigh(kohler) stripped and ready to fly?
I have one question.... How does this redrive doesnt need thrust bearing,dont get me wrong, I think its a beautiful redrive and Im sure it works like a charm but im just confused mostly because im novice to the whole thing. So aircraft has to be pulled or pushed trough air and I don't see how that doesn't affect the redrive shaft
Anyone know what this engine weighs when completed? Never heard the answer.
nice work.... I really like your reduction drive. just a comment about carb heat...when you were checking the temps you said the manifold was @165 so carb heat was good... the manifold temp doesn't have any effect on carb icing.. usually you want to heat the air going into the carb that's how you prevent the jet from icing over.
Love your videos and thank you for the outstanding information.
How many meters is the wing length of the mini track
AWESOME. Trik what is the weight. Have you scaled the thrust with a pull weight scale. 🇺🇸✌👍👍👀🍻🇺🇸
You have a pre-rotor set up? probably not with that small of a battery. Could go with hydraulics I imagine..
LOL...watching your "part 2"...and see the chain tensioner. still don't see motor mounts
ples how can i made ultralight rev would you help me ??
Where can I buy the chain driven
Do you machine your own parts or do you buy your propeller hubs and things? Is, where?
balancing conversation........... I understand a new prop would not be balanced but how well is a V-twin crank balanced? im sure you probably are already better than normal with the added billet flywheel but would not the vibration be multiplied off of a direct drive? I have had a direct drive fan on my boat (go to my channel there's a video). in my experience a 42" 4 blade direct drive vs. a 48" 6 blade on a reduction give just as much vibration through the boat at idol. neither give much vibration at wot. although v-twins idol rough the Honda gx630 reacted the same from 900-1200rpm. my theory was a unbalanced crank.
Just wondering, how many hours did you get out of this engine?
Hey sir good morning iam sure you are fine..so my question is regarding..... Minimum how much HP engine we need for ultralight aircraft .... please help me sir... please please
I have a 65 hp rotax I'm thinking about putting a v twin diesel 20 hp on mine could you help me put it all together
Love it, but does it fly?
How can we get in touch with Ronald Besse ?
Think about over-tightened lug nuts. Standing on the lug wrench doesn't loosen them(180 ft lbs?), but a 2 lb hammer does easily. You've got two hammers against each other in this system, the prop and the crank What's going to give? Crank? Bearings? Rods? Probably not the chain! :-) Maybe nothing will give, but
Rotax puts rubber shock absorbers in their gearboxes. They think a system without damping is unreliable. The chain has a little more give than gears, but there is still a lot of shock possible. Does the chain mass and slack provide enough shock absorption long term? IMHO, spring loaded idler would be much better.
Ana Carrillo Hi Ana,
Rotax did not put rubber bushings inside the 447 and 503 "B" gear box. I have had about 4 or more of them both Provision 4 and Provision 8 (4 bolt and 8 bolt pattern). They may have in some models like the "E" or "C" but not the "B".
Someone with more experience than me with Rotax product line could jump in and help (save) me here --- Please!!!
To my point about the chain, the gears in the boxes only have 3 teeth at any given moment touching. One on the small drive gear and one on each side of the larger propeller gear. Not much surface area at all, but it works great. I really like the Rotax gear boxes.
It's funny that no one thinks about the vibrations, pulses, back lash energy loads, and thrust loads that direct drive engines handle with a massive metal propeller or even larger wooden ones. Depending on the size of the propeller, they have rpms that the pilot must not stay at very long or they pick up a resonation frequency (vibration) that can cause damage to the engine.It's like a tuning fork affect.
Also, If we were spinning a flat disk with lots of mass and suddenly let off power then we would get a back slap affect that over time could really wear on the engine internals and for sure the redrive parts, but with the propeller more gently slows down with the engine, because it's under load compressing air as intended.
Your idea for the spring loaded idler is a wonderful idea for sure. I looked into them before mounting the one I have on there now. If I was going to mass produce these things, then I would most likely go with one and redesign the whole back plate to make room. Even better would be to go with the whole thing inside a casting like the Rotax gear box with an oil bath.
I wanted (for me anyway) to make this as simple and light as possible and still be reliable. I also have to keep the whole plane under the 254 lbs rule for PAR 103.It's not that I think this is the best way to build something, I just wanted to see if it would work.
It's like cluster balloon flying. Is it really the best way to fly? I guess it depends on who you ask.
I really have had no problems at all with this setup. I have had this engine in two different planes and been tinkering with it for 7 years now.
Thanks so much for watching and commenting, I really do enjoy the conversations, because it's all about learning and experimenting.
Sincerely,
Ron Besse.
Blankbiplane It was an E Box. Here's the blowup. Its part #6
www.ultralightnews.com/rotaxinfo/rotaxgearbox-e.html
Was it added later?
I hope you do some more with this. There are a lot of aluminum block engines around now. I would like to
try this on an airboat if I stay in South FL. A Raven Redrive could easily cost 2 or 3 times the motor, so there's room for some savings.
I saw this on an airboat site about chain cases:
"Leave lots of room in the case for the chain. In a snowmobile when the chain breaks in the chaincase it folds up on itself and quite literally explodes the case. It has nowhere to go. Happened to me this winter. not a pretty sight....."
Also this story:
"In my younger days when I lived on the Texas coast a friend of my dad and about half outlaw had a small airboat.This boat was rigged for floundering,and in my feeble brain I think it was a 5 by 12 hull. He outran every game warden around .
He was running a Wisconsin air cooled engine ,wood prop and a chain drive. It was a pretty simple set up as I remember it ,sprocket on the motor , a shaft mounted in two pillow block bearing with a larger sprocket on top and the prop mounted on the same shaft.
In the five years I knew him he was running 2 or 3 times a week and I don't remember him ever throwing a chain ."
Ana Carrillo Hi Ana,
I think this would be a blast on a small air-boat. On the trike I'm doing 35 mph in 5 seconds and 45 mph in about 2-3 more seconds. That's the fastest I have the coordination to do steering with my feet with such a short wheel base. I have a Suzuki street bike steering dampener using 40 weight motor oil, and it still gets tricky after 45 mph. With the wing, your up after about 32 mph. It's really starting to pull after 35 mph. Not sure what top end would be in a small converted Jon- boat??? Now that would be fun to find out!!!!
I don't have enough sense to be careful like I should. If it looks like fun, then I just go for it. Crashed a lot of stuff over the years, and I'm getting older. I'd look like Mr. Potato Head if I crashed now. Someone would have to go out and pickup all the peaces. I don't bounce like I use to, but that I would have to try.
Thanks again for the conversation and for the E-box information, it's good to know. I've heard that Rotax used them on something, but I never knew what. I thought it may have been on the 912 and 914 models.
Sincerely,
Ron Besse.
+Ana Carrillo, I get what you are imagining with the standing on a lug wrench vs a hammer but it's comparing apples to apples. Kinetic energy still just transfers to foot-pounds either way. I.E. If a 180 pound person were to hop on that lug wrench the kinetic energy would make that persons weight 300 pounds and also free the stuck lug just like a dead blow hammer.
Back to the chain, I have no experience with planes but I have a lifetime of experience on motorcycles and as a millwright. There is literally nothing that engine and prop could do that would damage that chain. I've seen electric motors in a factory with five time the torque rip structural steel and snap shafts before that chain would break.
From a millwrights perspective there is no weak link in this system based on it's output being nothing more than a fan blade.
Brian Hagmeier I agree, perhaps with a damaged prop or bearing failure but it's separated the thrust torque from the radial torque away from the crank quite well. This setup remind me of a Pete Jackson gear drive for a small block Chevy
The little slack in the drive chain will reduce the chances of a torsional vibration meltdown.
I love the simplicity and ruggedness of the reduction drive. Very good and solid engineering. Are there any specs on the bearings holding the horizontal thrust? i.e. is the reduction drive bearings thrust beatings?
This is the first time i come across you. Has the HOA ran you out of the neighborhood yet? Lol
would like to see it fly!
How i can buy this engine.can someone show it to me,thanks
I wonder how much better that new intake flows now that the air doesn’t have to make a 90 degree bend
11/28 dentes?
I was hoping to see it fly...
Where would I find that kind of flywheel to fit a Subaru 28hp FI engine?
11/26 dentes?
what about the biplane
The support sprocket is on the wrong side of the reduction drive.
ot1k Hi ot1k,
The engine rotates counter clock wise if you are looking from the back (windy side). Pulling down on left side and pushing up on the right. Its hard to tell in the video.
Thanks so much for watching and commenting.
Sincerely,
Ron Besse.
That's right, my bad :) I love the sound of V engines. Realy nice job. I'm using gx200 engine in my hang glider, 1st was direct drive and was working not bad but now i'm using more efficient 49 inch propeller- it pushes stronger and is more fuel efficient. i'm using 1-1.5liter (1/4-2/5 gallon) of fuel in 1 hour :-)
ot1k
Too Cool, love to see some pictures. That has to be a blast for sure. I just feed off this experimenting stuff. Hang Gliding has to be amazing. I'm guessing you could cruise up, shut off the engine, and catch thermals?
Just to glide down without engine noise would be awesome. Total freedom. Heavier trikes come down too fast.
Thanks, I just slipped into a flying dream like coma.
Ron.
Hello what size chain and sprockets are u useing ? I want to order the same what are measurements of chain n sprocket. ? I not sure how chain sizes are said. Or sprocket types n sizes thank you
Chein RUN super in OIL.
Office, I'm sure I kept it under 30.
I'm curious, did you ever put a wing on this? Some hours? BTW, there's a guy who built a electric Paramotor with a chain drive juicedparamotors.yolasite.com/v1-construction.php On a later version, he switched to a timing belt that looks sketchy as for power handling. I can't fine where he gave a reason for abandoning chain drive.
Based on your math, you lost me when you said that the Rotax and Kohler put out the same HP. 44.7x6000/5252=51 HP and 42.3x2400/5252=19 HP both fairly close to MFG specs. Are you getting the extra HP by running the Kohler at 5200 RPM? 42.3x5200/5252=42HP? Even with the history you have of with the engine, seems like you are making quite a few assumptions.
What ever happened on your motor.
COME ON MAN, IT'S NOT THE "SPRUCE GOOSE"----LET IT RIP AND FLY IT
but it can KILL you regardless of whether it's the spruce goose or not! PATIENCE!
Fly???''
Cut the muffler off and run open pipe :)
Quero ver voar
That chain is going to stretch when you put that prop on.
I don't care how long you been doing this or whatever because of the high resonance of the motor and propeller that chain will cause damage to your crankshaft it's not like a motorcycle a motorcycle is not a propeller, a motor should drive the propeller but the propeller should never drive the motor you would be much better off with a double or triple belt drive with a spring tensioner pulley, you don't believe me? just listen to How it slams when you shut it off and you have just the back of that flimsy seat to keep your head from flying back into the flywheel
LOL
Dude has used this setup for 7 years. Instead of assuming and criticizing, perhaps some thought and information gathering before you comment. You will look like a dumbass less frequently for your efforts !
doesn,t work...........spent like 1000 bucks fabricating a oil inclosed chain drive on a clone 460cc engine, destroyed chains in 5 mins, tight links, oil full of fillings, might of worked with a clutch or cush drive. ended up with belt drive and is faultless
.........might HAVE worked---not might OF worked!