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FastDoc · 10-30-2010, 04:01 PM

Are you going to add one of those 80cc Happy Times engine?

I did one of those a years ago. Quite fun! I used a Trek bike from CL and it took about 4 hours to add the motor. The bike did about 20 MPH and worked well. Sold it for a small profit.

If this is your intention, the only advise I can offer is make some vibration isolators out of an old inner tube when you mount the motor, and locktight everything. These units vibrate a ton. Also, as small as they are, they are loud, and will ring your ears after a long ride. I wore earplugs.

Finally, they are dangerous! Too fast for a bike, too slow for a motorcycle.

Have fun though!

BTW check out the Other Stuff forum to see the results of my Lifan/XR conversion!

Bill

PS looking at the rack, maybe you're doing a rack mounted conversion? My motor required a wider clearance left crank to clear the engine case.

How's the weather up there?

10-30-2010, 04:01 PM	#2
FastDoc Join Date: Mar 2009 Location: Southeastern Washington desert Posts: 14,761	Are you going to add one of those 80cc Happy Times engine? I did one of those a years ago. Quite fun! I used a Trek bike from CL and it took about 4 hours to add the motor. The bike did about 20 MPH and worked well. Sold it for a small profit. If this is your intention, the only advise I can offer is make some vibration isolators out of an old inner tube when you mount the motor, and locktight everything. These units vibrate a ton. Also, as small as they are, they are loud, and will ring your ears after a long ride. I wore earplugs. Finally, they are dangerous! Too fast for a bike, too slow for a motorcycle. Have fun though! BTW check out the Other Stuff forum to see the results of my Lifan/XR conversion! Bill PS looking at the rack, maybe you're doing a rack mounted conversion? My motor required a wider clearance left crank to clear the engine case. How's the weather up there? __________________ Happy to serve.
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