Finally got a chance to modify the sprockets and chain to a good quality #40 chain. It’s a tight fit but it can be done. Tight tolerances on the engine 10T sprocket and the rear I machined a clamshell hub and keep the nine hole pattern on rear sprocket of 45T. I’m into power not speed. The idler is a clamshell aluminum mount. Idler is uhmw with a one-inch roller bearing cam follower. The bear is being changed to a track roller bearing when it arrives. Will take better side-to-side pressure and it good to 1400 rpm. See attached pics.
It is like a whole new machine now. Vibrations are next to nothing now, no chain to sprocket noise. Just the chit chit bang bang of the exhaust now.
Yodabob legal in PA
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