4-stroke performance

Sidewinder Jerry

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That's what I'm thinking. No way could this have been purely my fault.
Even with a good clutch with that low hp engine it'll still burn the clutch up if the reduction is too low and enough pedal assist isn't being provided. A large person and/or steep hills and/or a single speed bicycle will contribute to burning it up even faster.
 

Mike St

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Apparently, you started with a rear sprocket that was too small
and simply burned up the clutch trying to climb hills or riding with a
passenger. Definitely you have to repair the clutch and go to
a larger rear sprocket for more torque. What is the size or the
number of teeth of your rear wheel sprocket?
 

Josh_wilcoxx

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Apparently, you started with a rear sprocket that was too small
and simply burned up the clutch trying to climb hills or riding with a
passenger. Definitely you have to repair the clutch and go to
a larger rear sprocket for more torque. What is the size or the
number of teeth of your rear wheel sprocket?
44 tooth rear, 10t front. I'm fairly light for my height, I weigh about 180. I feel like it's just a cheap pad material
 

Sidewinder Jerry

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44 tooth rear, 10t front. I'm fairly light for my height, I weigh about 180. I feel like it's just a cheap pad material
So this means you only have a 13.2:1 reduction. That is way to low of a reduction, with only 1.6 hp and moving a total weight of at least 240 lbs (bike and rider). . Even if you do get a good clutch you'll still burn it up.

With no hills you should have minimal reduction around 19:1. If you have steep hills to contend with you may need to be lower than a 40:1 reduction. So what you need is a 9:56 drive ratio or another transmission with a higher reduction or a shift kit.

Sadly these bargain kits most often turn out being more expensive to correct their problems than it would've been buying a quality kit.
 

Sidewinder Jerry

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Basically Organic pad material made from rubber, glass, kevlar and bonded resin
China got the mix wrong in a batch of shoes they made, Their defective
I'm not saying the OP didn't have a low quality clutch. However, even with a good clutch, it won't last long due to the low reduction being used.
 

Mike St

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OK, your rear wheel sprocket is too small for a 3:1 gearbox. Your
theoretically top speed is 39-40 mph which would leave you with
so little torque at the bottom end. You either have to change out to a
higher ratio gearbox or use a 56T rear wheel sprocket. FYI, there are videos
on the net of users with the same exact kit, like this one:

Not saying that you didn't get a bad clutch. So if it was me, I would
replace the clutch and install a 56T rear wheel sprocket, and that
would probably be your easiest, lowest cost solution.
 

Sidewinder Jerry

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OK, your rear wheel sprocket is too small for a 3:1 gearbox. Your
theoretically top speed is 39-40 mph which would leave you with
so little torque at the bottom end. You either have to change out to a
higher ratio gearbox or use a 56T rear wheel sprocket. FYI, there are videos
on the net of users with the same exact kit, like this one:

Not saying that you didn't get a bad clutch. So if it was me, I would
replace the clutch and install a 56T rear wheel sprocket, and that
would probably be your easiest, lowest cost solution.

He also needs to change the 10t sprocket to a 9t sprocket to go with the 56t sprocket. This'll give him a 18.67:1 reduction. However a better transmission would be the wiser option.
 
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