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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.

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  #1  
Old 08-06-2008, 05:36 PM
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badpenny badpenny is offline
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Default Couple of small issues to be addressed

Has anyone had issues with the chain rubbing? Either I don't have adequate clearance or my frame is bent. I have a 90's Roland (looks like a trek) And I mainly got it to see how simple putting one of these kits together would be. Secondly, I couldn't adjust the chain length by 1 link, so I had to leave 2 links in it. Now its droopy, and I couldn't adjust the wheel back far enough.
I think I might need to look @ a different frame.
A different question. How do you guys split your chain?
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  #2  
Old 08-06-2008, 05:45 PM
stude13 stude13 is offline
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Default Re: Couple of small issues to be addressed

hi; i use a dremel, a chain breaker can be used. go to search, has been covered. throw away chain and buy #41or415 get extra master and 1/2 links are available. good luck. mitch
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  #3  
Old 08-06-2008, 09:06 PM
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Default Re: Couple of small issues to be addressed

To remove links I use a bench grinder.

Where is it rubbing on the frame?

http://motorbicycling.com/f3/replace...hain-1139.html
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Old 08-06-2008, 09:11 PM
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spad4me spad4me is offline
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Default replace the chain, or move the engine, or adjust the rear sprocket, or do all three.

The chain that comes with the kit is so bad. The chain tensioner is a joke.

Search this site for a shim for the back motor mount called an aluminum tee shirt. It spaces the motor just enough forward so the chain links are even with the rear wheel geometry.
Use a BMX chain (this requires a thats dax .81 ten tooth drive sprocket)
You wont need the adjuster , and your ride will be smoother.

The sprocket can be installed with a dish or offset towards the wheel or away from it.

Sight down the chain-line for answers.
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  #5  
Old 08-07-2008, 09:51 AM
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Default Re: Couple of small issues to be addressed

Quote:
Originally Posted by fairracing31 View Post
Where is it rubbing on the frame?
Midway, of the lower arm that holds the wheel. (this of course is with the bike still upsidedown) Should I attempt reversing the sprocket to get different allignment? I thought of placing washers on the outside of the hub to push the frame away from the sprocket.

Also, in my instructions, its not clear on where the 2nd rubber bushing goes, so does it go on the inside? or are the spokes supposed to be sandwiched by these 2 rubber rings?

Last edited by badpenny; 08-07-2008 at 10:54 AM.
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Old 08-07-2008, 02:01 PM
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Default Re: Couple of small issues to be addressed

Are you having alignment issue's? Is your rear sprocket "True" with your front sprocket? You should have 1/2-3/4inch slack in the chain.

Yes the rubber should sandwhich the spokes



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Old 08-07-2008, 03:38 PM
Weedylot Weedylot is offline
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Default Re: Couple of small issues to be addressed

Wow! Those are good pics of the hub, Fairracing, answers a couple questions a buddy asked about this subject. Seems I talked a diehard anti-motorized bike friend into getting a Spooky Tooth kit. All I did was let him ride the Whizzer. He doesn't like the Whizzer belt drive so much, but he did return from his ride with a kid's grin. Asked me about this very topic.
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  #8  
Old 08-07-2008, 04:23 PM
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Default Re: Couple of small issues to be addressed

Quote:
Originally Posted by fairracing31 View Post
Are you having alignment issue's? Is your rear sprocket "True" with your front sprocket? You should have 1/2-3/4inch slack in the chain.
I have closer to 2 inches. Odd, seeing that if I took out the next link, it would put the axle outside the housing. And with the chain cut where I have it, I can't move the axle back far enough.
Quote:
Originally Posted by fairracing31 View Post
Yes the rubber should sandwhich the spokes
Thanks, most illustrations I have seen were taken @ odd angles and I couldn't tell the reflection from the real item. Plus the instructions I recieved were quite vauge.
Quote:
Originally Posted by fairracing31 View Post
Well, now that I see I can swap around my teeth to face inward, I might try that, seeing that my chain wants to travel the inside of the sprocket anyways.

This wasn't a standard sprocket, did you reduce the number of your rear gears to be single?

Last edited by badpenny; 08-07-2008 at 04:26 PM. Reason: Odd question.
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  #9  
Old 08-07-2008, 04:39 PM
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Default Re: Couple of small issues to be addressed

Why don't you use the tensioner to make the chain a little tighter?
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Old 08-07-2008, 04:48 PM
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Default Re: Couple of small issues to be addressed

Got to keep the chain from knocking the frame before I choose where to set the tensioner. 1 step @ a time. Secondly. I am still attempting to find a good pic of how that is set up.
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