Search found 8 matches

by diesel.mechanic04
Sep 09 2021 6:57pm
Forum: Bike Mechanical & Structural
Topic: Rear sprocket
Replies: 25
Views: 523

Re: Rear sprocket

A 66cc two-stroke engine is certainly capable of producing far more torque than a bicycle freehub ratchet is designed to handle. That's entirely dependent on the reduction gear ratio. But it's true that a freehub will give out sooner than a freewheel of equal quality and material, just because it's...
by diesel.mechanic04
Sep 08 2021 8:28am
Forum: Bike Mechanical & Structural
Topic: Rear sprocket
Replies: 25
Views: 523

Re: Rear sprocket

So you pulled the rear sprocket off old random bikes and you wonder why they are failing without going out and buying a brand new Shimano rear sprocket or a Sunrace ebike specific rear sprocket as Chalo mentioned. I have done both. Besides, SBP says they use walmart freewheels. I have destroyed sun...
by diesel.mechanic04
Sep 07 2021 10:09pm
Forum: Bike Mechanical & Structural
Topic: Rear sprocket
Replies: 25
Views: 523

Re: Rear sprocket

is it their fancier white industries one? maybe that's what you need. i have one. i have a different use than you and really i'll almost never use the ratchet aspect and i removed all the springs that push the pawls and its now virtually silent. still will engage but not all pawls at once. just the...
by diesel.mechanic04
Sep 07 2021 7:49pm
Forum: Bike Mechanical & Structural
Topic: Rear sprocket
Replies: 25
Views: 523

Re: Rear sprocket

youre saying the pawls or ratchet inside is breaking right? sounds like an old style screw on freewheel and not the newer cassette freehub style. was told the dt swiss steel freehub is the best bet. or with electric could do a fixed gear in the back and no ratchets to break and also then can use a ...
by diesel.mechanic04
Sep 07 2021 7:47pm
Forum: Bike Mechanical & Structural
Topic: Rear sprocket
Replies: 25
Views: 523

Re: Rear sprocket

A 66cc two stroke likely can put out way more torque than a bicycle freehub ratchet is intended for. you can get a steel freehub body from DT swiss. I would tend to agree with that. I did find it interesting that SBP has never heard of it happening with their kit that is made for this application.
by diesel.mechanic04
Sep 07 2021 5:38pm
Forum: Bike Mechanical & Structural
Topic: Rear sprocket
Replies: 25
Views: 523

Re: Rear sprocket

Is the rear gear a Sick Bike Parts part or a brand name part like Shimano, Sunrace, DNP? Could be a defective part, could be that it was installed wrong. SBP makes a crank freewheel or shall I say rebrands a chinese part as their own custom made part, like what Luna Cycle does. I don't know what th...
by diesel.mechanic04
Sep 07 2021 5:30pm
Forum: Bike Mechanical & Structural
Topic: Rear sprocket
Replies: 25
Views: 523

Re: Rear sprocket

I have am having issues destroying inners of the rear freewheel/sprocket set. I am running a Sick bike parts style jackshaft kit with an 66cc 2-stroke. I destroyed the inners of the last one in about 75 miles. This seems to be a mostly electric forum, but I was refered here by SBP because they coul...
by diesel.mechanic04
Sep 07 2021 11:30am
Forum: Bike Mechanical & Structural
Topic: Rear sprocket
Replies: 25
Views: 523

Rear sprocket

I have am having issues destroying inners of the rear freewheel/sprocket set. I am running a Sick bike parts style jackshaft kit with an 66cc 2-stroke. I destroyed the inners of the last one in about 75 miles. This seems to be a mostly electric forum, but I was refered here by SBP because they could...