Twist grip clutch??

Discussion in 'Motorized Bicycle General Discussion' started by greasy tom, Aug 4, 2010.

  1. greasy tom

    greasy tom New Member

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    I have had several clutch lever problems on my cruiser w/ 80cc Chinese kit, although mostly minor I'd like to come up with something more durable.
    I was looking at a throttle twist grip assembly and wondered if any of you folks ever tried to replace the clutch lever with a twist grip?
    I was wondering if the leverage and cable travel would be adequate or do you think this is just a "carpal tunnel" candidate?
    I found a source (see link) for these throttle grips for $ .99 each which got me to thinkin'..........

    https://www.surpluscenter.com/item.asp?item=1-1935&catname=
     
  2. professor

    professor New Member

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    The difference between your gripping ability and your holding an turning ability is substantial. If your clutch was real light in pull- you have a shot at it.
    The HT clutch I grabbed was like a bear trap.
    Look at making the angles better down on the engine.
     
  3. Al.Fisherman

    Al.Fisherman New Member

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    Here is a solution..reduces clutch handle pull by at least 80%...for more information shoot me a PM.

    [​IMG]
     
    #3 Al.Fisherman, Aug 5, 2010
    Last edited: Aug 5, 2010
  4. noco

    noco New Member

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    is your clutch cable hooked up correctly??? the large spring is a heat sheild and shouldnt be in between the mount and arm....just an idea cause a friend of mine had clutch lever problems and it was due to him miss placing that spring....he was getting a strong left forearm pulling that through all the stop signs in town
     
  5. Bikesnfire

    Bikesnfire New Member

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    I use the 3 speed Sram grip shifter for the clutch. It locks in different positions and is very easy to operate. I have 4 bikes using them right now and I really like the way they work. The clutch levers supplied with the kits are basically junk. I say give a grip shift a try. Mine work great and my future builds will have them also.
     
  6. BarelyAWake

    BarelyAWake New Member

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    Cable lube isa wonderful thing ;)


    I'm really not being snarky lol - I keep seein' ppl complain about the stiff clutch and the junk levers, even folks around here where I live... yet I've found if the smaller spring that's "supposed" to help with return is discarded (not the bigger heat shield one) as unnecessary, the cable itself is routed smoothly w/o sharp bends and well lubricated (it's dry out of the box), even a lil dab o'grease on the actuator pivot & ramp - and the clutch becomes remarkably light & easy to pull...

    I suppose there could easily be variance from kit to kit, but I've "tuned" five bikes like that so far with excellent results *shrug*

    Not to say that a twist clutch wouldn't be neat (one less lever) or that the pulley mod isn't interesting - but I've simply not found them to be necessary for the reasons stated...
     
  7. Al.Fisherman

    Al.Fisherman New Member

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    While I agree with you, I also discarded the spring, lubricated the cable and made as smooth a route for the cable/housing, my clutch wasn't all that bad. I picked up the roller idea from a member on another forum and thought I try it to see how well it worked. I have both, more materials and tools then the above average bike builder, so making one wasn't a issue. With the roller I can tie a piece of 6# test mono fishing line to the handle, pull and disengage the clutch (that makes it a one finger operation if you choose). I doubt, that can be done with the best installed OEM clutch cable set up using the original mounting. I get nothing but praises when the roller mod is used.
     
  8. BarelyAWake

    BarelyAWake New Member

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  9. LouieMCman

    LouieMCman New Member

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    Twist grip clutches were used on some motorcycles back in the early days (1900-20). Of course the clutches were more primitive but they seemed to work as well as moving a lever along side the tank, this was before they had foot clutches. So I don't see why it wouldn't work in today's world as long as your clutch is working properly.
     

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