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chain and tire problem!


Discussion at Motorized Bicycle Engine Kit Forum in the Motorized Bicycle General Discussion forum. well im running into a small problem with chain rubbing on the side of the tire. i solved it a ...
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Old 12-24-2008, 01:13 PM
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Default chain and tire problem!

well im running into a small problem with chain rubbing on the side of the tire.
i solved it a little buy having the tire put on at at a small angle to the drive side, but not sure how safe this will be, any way i could solve this, if not i guess i could run smaller tires(but the 2.125 look so nice!) any body know where i could get some nice 26x1.95 or 2 at? hmm;......
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Old 12-24-2008, 02:14 PM
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Default Re: chain and tire problem!

try sweet skins from universal cycle....my first build had the same problem....went with a 2.125 steel rim with 12 gauge spokes and a 195 tire worked great...nashbar has great deals on tires...this is the time to buy...good luck with the build and keep that engine in tight...dennis
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Old 12-24-2008, 03:23 PM
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Default Re: chain and tire problem!

Check your rear sprocket. Some of them (most) have a dished profile. The sprocket teeth are offset to one side. If your sprocket offsets toward the wheel you might get clearance by flipping the sprocket over putting the teeth outboard but watch for seatstay clearance when you do that. If that becomes a problem you might get away with spacing the wheel away from the frame with a couple of washers on the rear axle on the motor drive side.
Good luck, keep us informed. Happy Holidays
Tom
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Last edited by 2door : 12-24-2008 at 03:46 PM.
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Old 12-24-2008, 04:47 PM
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Default Re: chain and tire problem!

Don't run the wheel cocked off to one side so the chain clears.

A slight rubbing on the tire is not as harmful as running the chain out of alignment.

I run 2.00's with no problem.
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Old 12-24-2008, 11:38 PM
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Default Re: chain and tire problem!

I went to the hardware store and bought enough washers to put 3 flat washers behind the sprocket and between the rubber mount on each bolt (=1/8 in spacing). Then added two thick washers to the axel to prevent the chain from hitting the frame. Worked great and have many miles on it that way.
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Old 12-24-2008, 11:47 PM
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Default Re: chain and tire problem!

This gave me clearance to spare and can run wide tires. Ate one tire up though before the spacing, I would change out the stock tube for a heavy duty tube while the wheel is off, Plus maybe change the bearings out for loose bearings if it is a Walmart bike. Bearing can be found at ACE Hardware as well as bike shops. Kind of a pain learning how coaster brakes go back together and keeping the bearings in place with grease while you assemble, Maybe it is just that I weight over 230lb and ride rough roads. But those washers are easy to do.
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Old 12-25-2008, 02:11 PM
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Default Re: chain and tire problem!

thanks so much for the help guys its been great!... im going to try the washer spacing, also i did rebuild the bake hub, and also put some nice phil wood grease in there!!
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