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Old 01-10-2018, 03:52 AM
mibazza mibazza is offline
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Join Date: Jan 2018
Posts: 7
Default Gy6 with reverse direct driven gear problems

Hi all,

New to this forum, I have an old 2 seater buggy with gy6 157qmj (from memory) engine which directly drives both back wheels, no chain. And a bigger single seater with a Yamaha FJ1200 bike engine in it, chain driven. I live in Scotland and like to tinker with mechanical stuff.

I've got a problem with a GY6 engine which I got in an old two seater buggy. The buggy has reverse also. It wasn't driving properly so I stripped the engine out and opened up the gearbox and found one large gear missing three teeth and the gear it meshes with is quite mangled. Ok easy I thought, count the teeth pop on fleabay and buy some new gears, gy6 is a popular engine. But I cannot find replacement gears anywhere. I can find replacements for the big gear (excuse my ignorance of what the gears are properly called) but with the wrong amount of teeth and cannot find the smaller gear anywhere. Does anyone know where I can get these or recommend what else I can do, I've seen complete gear sets but they don't look like they are the same as the gear sets in my gy6. The big gear has 44 teeth and 34 splines and the small one has 11 teeth and 6 splines on the shaft its part of. Cheers, pulling my hair out trying to work out how to fix this thing, its been a non runner now since last summer and I want to get it fixed to get out with my son who has own little buggy.
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