I recently picked up a qt50, got it running and had a bad noise in the rear end, (someone had it opened before one of the bearings was missing all together) I replaced all the bearings with new and noise is still there
I tore apart the rear end of my other qt50 and found it has a different sized pinion gear. The ring gears are identical. I pulled out the pinions and put them side by side and one of them is noticeably bigger.
is there anyway to tell what the larger gear is from, maybe someone started a pw50 swap and only had half the parts? I need to buy a stock gear or I can trade this one if I can find out what its from
the one on the right in both photos is the stock qt50 gear