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Motorized Bicycle Trouble Shooting Use this area to post problems that may arise that you could use some help in figuring out what is wrong with their bicycle motor and what needs to be done to achieve top performance.

clutch always engaged


Discussion at Motorized Bicycle Engine Kit Forum in the Motorized Bicycle Trouble Shooting forum. just finished install on grubby gt5 kit. thr problem is that the clutch is always engaged. The swing arm works ...
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Old 09-08-2009, 12:53 PM
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Default clutch always engaged

just finished install on grubby gt5 kit. thr problem is that the clutch is always engaged. The swing arm works when lever is pulled. The pin inside the drive sprocket gets pushed in like it should. removed cover opposite side of motor. the silver clutch plate gets pushed out away from the larger of the 2 gears like it should and the thing is still engaged. its still engaged with the silver clutch plate completely removed and no friction or pressure on the larger gear whatsoever. I'm having trouble disasempling the clutch any further than this, I'm not a small engine mechanic. some steps maybe on how to disasemble the clutch would be greatly appriciated.
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Old 09-08-2009, 10:15 PM
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Default Re: clutch always engaged

After months of clutch tinkering, I just leave it engaged. I installed a small front sprocket to make clutchless cranking easier. I kill the motor when I have to stop and refire it when I go. The air stays cleaner since I never idle the engine.
There is an answer out there, but that is how I stay on the road.
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Old 09-08-2009, 11:17 PM
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Default Re: clutch always engaged

Try this. Remove the clutch actuator cover, left side, exposing the sprocket and the protruding pin. Give the pin a good sharp rap with a hammer. Don't beat it to death but give it a couple of sharp blows. The clutch pads are sometimes stuck from the factory and even with the lever moved as far as it will go the pads won't release. Make sure the ball bearing that rides behind the pin is there and lube all those parts before reassembly. get back to us if this doesn't work.
Tom
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Old 09-08-2009, 11:19 PM
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Default Re: clutch always engaged

Check out Norm's 2 stroke repair center.
Norm's 2 stroke repair center - Bicycle Motor at Motorized Bicycle Forum
Or Motorized Bicycle Trouble Shooting.
Motorized Bicycle Trouble Shooting - Bicycle Motor at Motorized Bicycle Forum

The clutches are really simple in design and not too hard to work on.
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Old 09-09-2009, 11:58 AM
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Default Re: clutch always engaged

guys thank you, I realy appriciate the help. turns out the 10t sprocket nut was assembled so tightly it froze the entire assembly. just like over tightening a couple hub nuts, it freezes the bearings and the wheel won't spin.
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Old 09-09-2009, 02:01 PM
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Default Re: clutch always engaged

Quote:
Originally Posted by Lucky420 View Post
guys thank you, I realy appriciate the help. turns out the 10t sprocket nut was assembled so tightly it froze the entire assembly. just like over tightening a couple hub nuts, it freezes the bearings and the wheel won't spin.
??????????
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Old 09-09-2009, 10:28 PM
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Default Re: clutch always engaged

Now that is wierd! The bearings are semi-sealed ball bearing assemblies. If the nut were tightened to the point of death, the only part of the bearing squeezed would be the inner race. It could really care less, wouldn't feel a thing.
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Old 09-09-2009, 11:08 PM
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Default Re: clutch always engaged

all I know is I had the clutch plate completely off and the thing was still engaged. when I loosened the nut holding the drive sprocket (on the other side of the motor) a 1/4 turn at most, the large gear with the clutch pads on it popped free and was able to spin freely from the center assembly for the first time, reassembled everything bike works perfectly.

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Old 09-10-2009, 11:00 PM
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Default Re: clutch always engaged

Well.... Then I would have to say job well done!
I know that ultimate quality control does not play much into these little engines, and perhaps you have delt with a unique issue?
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Old 09-11-2009, 03:05 AM
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Default Re: clutch always engaged

my clutch pin at the sprocket won't push in at all. tried hitting with a hammer and still nothing any ideas?
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