I'll try to get more photos and some info soon.Sorry I can't help with your question, but I'm way interested in learning more about your friction bikes.
Sub'd
The 2 strokes run away from any small 4 stroke we have tried. Plus there's a lot of mods the cross over from the RC boat/plain world for the little homelites. And people pretty much give them away. All three motors were free. The one on the blue bike mounted to the forks has 60+ miles on it and will push the bike to near 30mph. Picked up an idea for stuffing the crank on them I want to try maybe bring the squish down to .018 raise exhaust probly blow it up. Its all in fun. The RC guys say they will beat the crank to death if compression gets above 130-135.I am kinda curious why you like these engines in particular? I mean, why not something more readily available? For instance, the Stihl 4-mix engines should have a good bit more torque. A CL ad wanting to buy them running or not should turn up some bargains that sat too long with old gas. I've had good luck with aftermarket carbs to bring em back to life.
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