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| Mounting Techniques Every frame is different. Share and ask questions about mounting your motorized bicycle engine kit to your bicycle frame or bicycle rack |
How tight should I tighten the sprocket bolts?
Discussion at Motorized Bicycle Engine Kit Forum in the Mounting Techniques forum. I'm installing my 80cc on my mountain bike now. How tight should I tighten the sprocket bolts? I have a ...  | | 
03-19-2008, 08:48 PM
|  | Motorized Bicycle Senior Member | | Join Date: Mar 2008 Location: Seattle, WA
Posts: 67
| |  How tight should I tighten the sprocket bolts?
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03-19-2008, 09:02 PM
|  | Moderator | | Join Date: Jan 2008 Location: Pampa, Texas
Posts: 1,837
| | Re: How tight should I tighten the sprocket bolts?
I used 1/4" drive ratchet and tightened about as tight as I could with one hand. I didn't get brutal or anything just good normal tight. I started out with them just snug and went round and round tightening them trying to keep sprocket straight. Hope this helps.......................
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03-19-2008, 09:54 PM
| | Motorized Bicycle Senior Member | | Join Date: Mar 2008 Location: Seattle, WA
Posts: 67
| | Re: How tight should I tighten the sprocket bolts?
I should have read the instructions that came with my kit instead of looking at those picture instructions from zippycycles.com ! The photo of the sprocket shows both rubber washers on the inside of the spokes, rather than one on the inside and one on the outside like my instructions say. I have a feeling my instructions are right, what did you guys do? |
03-19-2008, 10:00 PM
|  | Administrator (aka CaribbeanCruiser) | | Join Date: Dec 2007 Location: St. Croix US Virgin Islands
Posts: 2,561
| | Re: How tight should I tighten the sprocket bolts?
yes one on inside and one on outside. here is a pictorial on installing the sprocket http://motorbicycling.com/f30/motori...ocket-381.html the pictorial is about changing out site of you sprocket but great for initial installation also |
03-19-2008, 10:20 PM
| | Motorized Bicycle Senior Member | | Join Date: Mar 2008 Location: Seattle, WA
Posts: 67
| | Re: How tight should I tighten the sprocket bolts?
This forum is so great, you guys are really helpful and nice! Thanks |
03-19-2008, 10:28 PM
|  | Motorized Bicycle Senior Member | | Join Date: Mar 2008
Posts: 80
| | Re: How tight should I tighten the sprocket bolts?
The instructions I saw recommended a rubber washer on inside and outside only for bikes with coaster breaks. I'm not sure why that would make a difference.
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03-20-2008, 08:02 PM
|  | LORD VADER Moderator | | Join Date: Jan 2008 Location: pampa texas
Posts: 2,358
| | Re: How tight should I tighten the sprocket bolts?
Follow our instructions and you will be successful if you don't understand anything don't be afraid to ask. I use the fiber gasket on both sides to get a good grip on the spokes, keeps the sprocket off the spokes, provides space to aline the front and rear sprockets.
Norman |
03-21-2008, 06:47 AM
|  | Godfather of Motorized Bicycles | | Join Date: Jan 2008 Location: Ashtabula county, Ohio
Posts: 7,880
| | Re: How tight should I tighten the sprocket bolts?
One on the inside, one on the outside, it's the only way it will work and keep working.
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03-24-2008, 07:38 PM
| | LORD VADER Moderator | | Join Date: Jan 2008 Location: pampa texas
Posts: 2,358
| | Re: How tight should I tighten the sprocket bolts?
Listen to Joe.
Norman |
03-24-2008, 08:12 PM
|  | minor bike philosopher | | Join Date: Jan 2008 Location: north carolina
Posts: 5,841
| | Re: How tight should I tighten the sprocket bolts?
I agree its the only way that makes sense. Metal and metal will never grip like that wrap around fiber.
I tightened mine till I felt like the nut stopped moving, not till the puller handle bent. But you should check it now and then, as it will probably get loose after a while. Everything gets loose after a while | | Thread Tools | | | | Display Modes |  Linear Mode | 
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