- Local time
- 6:06 PM
- Jun 12, 2020
Hey Michael, I’m positive that this setup will fit and could replace your pulley. https://www.bicycle-engines.com/4g-...rocket-for-grubee-4-stroke-t-belt-drive-kits/Unfortunately Mike, I must have not explained this "gap" well enough in the first paragraph of post #22. It was the best I could do.
My clutch installation yesterday works perfectly. I was able to stop the large pulley from kissing the bell by first removing the black steel ring on the rear. Just grab it with vise grips and twist it back and forth, it's a press fit. The teeth are actually machined into the aluminum casting and are not a separately applied component as I had previously thought. There was still minimal kissing going on which I eliminated by placing some emery cloth at that point an spinning the large pulley until it was no longer there. .It still wobbles but the belt tracks well. It tends to track on the small pulley against the bell which keeps that 1/16" endplay on the spacer washer open. Finally I have this running to my satisfaction. It would have been nice had they furnished a second end cap to go in the bore of the large pulley. If I machine a longer one someday for the clutch I will use that one. The belt dragged on the lower portion of the cover with a half inch gap on the top. Unbelievable ! You'd think they could make this fit. After elongating two screw holes and drilling a new one for the bolt the cover fits properly. It'll be a while before my bike is on the road so keep us all informed on how yours is doing.
I'm anxious to see how much extra effort is required to pedal the bike with the engine off seeing as this trany does not have a freewheel. Maybe a tapered shaft engine's 11T drive sprocket with a freewheel will fit our shaft. Something to research for sure.
I just put a Grubee 80t pulley on my Amazon belt drive and that fit, so the freewheel one should fit as well. It would help with the drag, it would also make you able to coast with the engine idling