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| | | | | Motorized Bicycle General Discussion Topics on bicycle engine kits, help articles, repair and modifications for your motorized bicycles | Sprocket Installation - Bicycle Engine Kit Discussion at Motorized Bicycle Engine Kit Forum in the Motorized Bicycle General Discussion forum. Chris Hill spent a lot of time putting this together and did an awesome job. Great job Chris!
for the ...  | | 
01-13-2008, 02:37 PM
|  | ADMINISTRATOR | | Join Date: Dec 2007 Location: St. Croix, US Virgin Islands
Posts: 1,775
| | Sprocket Installation - Bicycle Engine Kit Chris Hill spent a lot of time putting this together and did an awesome job. Great job Chris! for the rest of the installation process click here Bicycle Engine Kit | 
01-13-2008, 07:32 PM
|  | Master Bike Builder & Forum Sponsor | | Join Date: Dec 2007 Location: Duvall, WA PNW
Posts: 1,538
| | Re: Bicycle Engine Kit- Sprocket Installation I just did the drill - without the good instructions....nice.
The question is: Did I blow it? 
Last edited by Pablo : 01-13-2008 at 08:23 PM.
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01-14-2008, 05:11 AM
|  | ADMINISTRATOR | | Join Date: Dec 2007 Location: St. Croix, US Virgin Islands
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| | Re: Sprocket Installation - Bicycle Engine Kit looks like you did a fine job pablo. i sure wish i had intstuctions like these when i first did my bike. i will definatly be looking forward to more | 
01-14-2008, 06:22 AM
|  | Master Bike Builder & Forum Sponsor | | Join Date: Dec 2007 Location: Duvall, WA PNW
Posts: 1,538
| | Re: Sprocket Installation - Bicycle Engine Kit My buddy who has built several bikes and who is very skilled mechanically told me to only use the rubber donut on the inside and not use the donut between the sprocket and spokes. The instructions say dished side in with shiny chrome side in which I followed (but the writing is atrocious and the pictures worse).....this part is opposite Chris Hill's instructions. The two sprockets look very well aligned, though. I managed to get the sprocket nicely center. I am afraid the chain will hit my knobby tire.
Last edited by Pablo : 01-14-2008 at 06:24 AM.
Reason: clarified
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01-14-2008, 06:44 AM
|  | ADMINISTRATOR | | Join Date: Dec 2007 Location: St. Croix, US Virgin Islands
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| | Re: Sprocket Installation - Bicycle Engine Kit make sure you have the dougnut on both sides because what i have heard is you will destroy your spokes. i would definatly sandwhich the spokes with both pads. people that have had the chain hit tires ussually bring out the tensioner a little to get the clearence needed | 
01-14-2008, 08:11 AM
|  | Master Bike Builder & Forum Sponsor | | Join Date: Dec 2007 Location: Duvall, WA PNW
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| | Re: Sprocket Installation - Bicycle Engine Kit Quote:
Originally Posted by CRUISER make sure you have the dougnut on both sides because what i have heard is you will destroy your spokes. i would definatly sandwhich the spokes with both pads. people that have had the chain hit tires ussually bring out the tensioner a little to get the clearence needed |  I'm a bit cornfused
I understand that logic, my buddy Ghost0 said to leave the second doughnut off....I think for alignment issues, because this kit says to mount the sprocket opposite of the way Chris Hill shows. I need some solid clarification. | 
01-14-2008, 08:15 AM
|  | ADMINISTRATOR | | Join Date: Dec 2007 Location: St. Croix, US Virgin Islands
Posts: 1,775
| | Re: Sprocket Installation - Bicycle Engine Kit i would wait to see what chris says. i just know what i saw at the bike shop and that was a destroyed wheel with only one doghnut on it. i would think but i could be wrong metal on metal with vibration and contant tugging the metals will be rubbing which cannot be good but as i said i would see what chris or andy or mike has to say since they have both built lots of motorbicycles | 
01-14-2008, 09:08 AM
|  | Senior Motorized Bicycle Builder | | Join Date: Jan 2008 Location: Willamette Valley, Oregon
Posts: 98
| | Re: Sprocket Installation - Bicycle Engine Kit USE BOTH RUBBER BUSHINGS! Unless, of course, you don't mind buying new bike parts like me  ) Your spokes will fail. The instructions in my kit reccommed putting the offset sprocket toward the inside. That means the nice chrome finish on mine went on the inside.
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01-14-2008, 09:15 AM
|  | Master Bike Builder & Forum Sponsor | | Join Date: Dec 2007 Location: Duvall, WA PNW
Posts: 1,538
| | Re: Sprocket Installation - Bicycle Engine Kit Quote:
Originally Posted by iRide Customs USE BOTH RUBBER BUSHINGS! Unless, of course, you don't mind buying new bike parts like me  ) Your spokes will fail. The instructions in my kit reccommed putting the offset sprocket toward the inside. That means the nice chrome finish on mine went on the inside. |
THANKS - I think you convinced me with one large hesitation - if I put the rubber spacer (cut tire) in and have the offset sprocket toward the inside , it will be best case spacing for tire clearance - but won't it mess up the engine to rear sprocket alignment? I might be better off turning the sprocket around and having the nice side out for best alignment. | 
01-14-2008, 10:30 AM
|  | Senior Motorized Bicycle Builder | | Join Date: Jan 2008 Location: Willamette Valley, Oregon
Posts: 98
| | Re: Sprocket Installation - Bicycle Engine Kit Hey Pablo,
The sprocket offset doesn't really matter (just whichever way works for best alignment) but the rubber bushings are the crucial part. a wheel failure at 25-35mph might end up costing you more than just a wheel replacement...OUCH!
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