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Sorry dude, my mistake.

My gearbox would be good in your application. I also use a Honda, I'm interested in how you improve the efficiency. Great sport!

Brilliant! Huge wheels are a weak point. Great inginuity though.

Thanks everybody.

Your on the right track. It rides like a normal pushie, it freewheels like a normal bike. It only has one chain and no extra levers. It's light and the weight is in the right place. It will get up any hill that the tyre can find grip on, and it cruises at 40kph with a gx31. I haven't had to...

Thank you for your comments. If I get more enquiries I may look into having plans drawn up. I built this for myself because the bikes I saw on the market were not good enough for what I wanted. They were all too fragile and heavy. This design solves those issues neatly. A small engine needs...

Cheers. Its just a reduction box with some pedals.

On or off, it's got seven gears so its good everywhere. I dont have any plans, just a sketch. Clutch is stock, works well with 100/1 reduction.

Thanks RW, I posted some stuff on some other bike sites you could search out. I won't link it on this forum but you'll find it by name. It's great for what I want, which is a light motor that I can still pedal like a normal bike. The next build will be much more compact, I'll use a better bike...

Like most of you I love things that go, especially bikes and karts. I made this gearbox so I could use a Honda GX31 on my mountain bike and drive it through the gears. I've recently stripped it down after an extended testing period, it had no wear. I'm so pleased with it I thought I would show...

I made this a few years ago. It solves all the problems of mounting a powerhead to a bike or a kart. These little engines are getting better all the time, they run at any angle and have built in cooling. Search perrincycle for a little movie.