I got a really good deal on a 142f Kit at a local auction house which I believe is the generic Amazon kit and installed it on a Huffy Panama Jack cruiser. On the first ride, the clutch was slipping. I couldn’t take off from a stop on flat ground and the engine and bike never felt hooked up at any rpm. The throttle stop was removed, so I was getting full throttle. I drove it a couple miles and at least 1/8” was gone from the lining so I don’t think it was a spring extension issue. It was the 3 shoe clutch. I went ahead and bought a 4 shoe clutch with the spring and lining around the full circumference. It acted exactly the same except the lining had no wear on a similar length ride. The little engagement it does get seems to occur at the appropriate rpm. I weight around 300#, but I don’t think that is the issue as the engine rpm doesn’t bid down when under “load”, which I’d think it would if it was my weight. I took it back apart, scuffed the drum with sandpaper and cleaned the lining with brakeclean and that made no difference. The clutch has the light colored lining with a slightly scalloped texture. Any insight would be appreciated. Thanks.
Clutch slipping problem
- Thread starter JeffHWV
- Start date
GW's Motorized
Well-Known Member
It sounds like a spring problem to me, I'd just order an oem replacement clutch for a Honda engine.
It had a small tab screwed to the carb that wouldn‘t let it go past 2/3 throttle. I just took it off. It came in a plain box with no documentation and very rudimentary directions poorly translated from Chinese. No writing on the engine cover either. The place I got it from sells mainly Amazon returns so I am assuming it came from there. I don’t think it was ever out of the box. I paid $85 for it. Chain reduction box driven by a centrifugal clutch bolted to the crankcase. 40 tooth rear sprocket and IIRC, 9 and 27 tooth sprockets in the box. Mounted In frame on a cast iron mount with sliding sheet metal bent into channel end, 4 6mm bolts in slotted holes through the side to tighten it. Is there a better clutch than the replacement I bought? Thanks.
GW's Motorized
Well-Known Member
Whatn8s the sprocket size coming off the gear box to the 40 tooth?
cayminlast
Member
It's sometimes difficult to find the solution, I've seen a few videos on various fixes that could help online, I could'nt hazard a guess at the moment. Have to look into it.
GW's Motorized
Well-Known Member
Check the gear ratio. If your ratio is to high it will smoke the clutch. I had this issue when gearing my go kart
GW's Motorized
Well-Known Member
You have roughly a 3.5 to 1 ratio. That should be fine, but @ImpulseRocket knows alot about gear ratios
Total gear reduction is effectively 12:1 (27/9) × (40/10) = 3 x 4 =12.
