Any benefit to adding a centrifugal clutch kit to my 80cc 2 stroke?

[extremeodd]

I'm running a zeda motorsports "poor boy" which is basically just a well ported motor with a better piston (supposedly) and as this hobby requires, I've been looking at new gadgets and accessories. The latest of which is a centrifugal clutch kit:
https://www.pistonbikes.com/Centrifugal-Clutch-for-a-2-stroke-p/cc2s.htm
https://www.ebay.com/itm/50cc-gas-e...entrifugal-clutches-for-2-stroke/143127547374 (Under $50 shipped)
(how to install)

This looks like it could be really handy, but the question I have is: Do these motors have enough torque to get moving from a stop using a centrifugal clutch if you weigh over 200lbs? I can already get moving from 1-2 mph using just the motor and clutch, it doesn't seem to be much of a stretch to do it from a dead stop with a centrifugal clutch.

 

[Lukesky36]

There are a few benefits like launching out from a dead stop and freewheeling when your going down hills is also a nice feature so you dont fry your motor if your not familiar with clutch control when it comes to 2 strokes

 

[CrazyDan]

It'd also be good for high torque builds that slip bad when it gets on the pipe.

 

[extremeodd]

After playing around with a 32 tooth sprocket today (was running a 44) I've come to the conclusion this clutch would be useless if your running anything smaller than a 44 tooth sprocket. With a 44 I can go off of pure motor power if I'm doing 2-3 mph and slip the clutch for a second, with the 32 the motor is useless below 7-10 (at 9ish mph the motor is turning 1800-2000 rpm).

It would probably work best on a bike thats running a 48 tooth or bigger sprocket.

 

[CrazyDan]

They do make clutches that can lock at a much lower speed.

 

[extremeodd]

Its not the lockup speed that I'm concerned about, its the motor's lack of torque at low RPM. With a 44t sprocket the motor will turn just fast enough at a few mph to have enough torque to move (just barely) where if your running something smaller like a 36, 34, 32, it wont be at that same torque output until a higher speed meaning either that centrifugal clutch will have to slip a lot to let the motor spin fast enough to move the bike or you will simply just stall it out. Thats the biggest downside to these 2 stroke motors, no usable power at low rpm (3k and below)

 

[CrazyDan]

Well, you can get a clutch with a higher lockup speed then. Would let it slip to a much higher, more usable, rpm.

 

[Sumsloppymeet]

id love to tryout a good clutch setup i cant find them tho

 

[JerboaJohn]

springs can be switched out for stiffer, or lighter for couple bucks. take a look at OMBWarehouse and AGK. lots of clutch stuff cheap to really high end

 

[The_Aleman]

The manual clutch works just fine off the line if you pedal. I've always treated my clutches like on/off switches.

Need more power off the line? Pedal harder. Your legs can produce more torque than any of these small engines will.