Motorized Bicycle Engine Kit Forum
Register FAQ Members List Calendar Mark Forums Read


Search Titles Only

Sponsors
Donations accepted to help with server fees and other expenses. Thank you!


Go Back   Motorized Bicycle Engine Kit Forum > Bicycle Motor > Motorized Bicycle Trouble Shooting

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.

Couple of small issues to be addressed


Discussion at Motorized Bicycle Engine Kit Forum in the Motorized Bicycle Trouble Shooting forum. Has anyone had issues with the chain rubbing? Either I don't have adequate clearance or my frame is bent. ...
Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 08-06-2008, 05:36 PM
badpenny's Avatar
Motorized Bicycle Apprentice
 
Join Date: Aug 2008
Posts: 13
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?
Reply With Quote
  #2 (permalink)  
Old 08-06-2008, 05:45 PM
Master Motorized Bicycle Builder
 
Join Date: May 2008
Location: north bend wa.
Posts: 354
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
Reply With Quote
  #3 (permalink)  
Old 08-06-2008, 09:06 PM
fairracing31's Avatar
Moderator
 
Join Date: Mar 2008
Location: Tucson,Arizona
Posts: 2,600
Default Re: Couple of small issues to be addressed

To remove links I use a bench grinder.

Where is it rubbing on the frame?

Replace/Repair/Adjust Chain
__________________
Reply With Quote
  #4 (permalink)  
Old 08-06-2008, 09:11 PM
spad4me's Avatar
Master Motorized Bicycle Builder
 
Join Date: Jan 2008
Location: Arizona Bullhead
Posts: 172
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.
Reply With Quote
  #5 (permalink)  
Old 08-07-2008, 09:51 AM
badpenny's Avatar
Motorized Bicycle Apprentice
 
Join Date: Aug 2008
Posts: 13
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.
Reply With Quote
  #6 (permalink)  
Old 08-07-2008, 02:01 PM
fairracing31's Avatar
Moderator
 
Join Date: Mar 2008
Location: Tucson,Arizona
Posts: 2,600
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



__________________
Reply With Quote
  #7 (permalink)  
Old 08-07-2008, 03:38 PM
Master Motorized Bicycle Builder
 
Join Date: Jun 2008
Location: Tucson Arizona
Posts: 275
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.
__________________
The only normal people are the ones you don't know very well.
Reply With Quote
  #8 (permalink)  
Old 08-07-2008, 04:23 PM
badpenny's Avatar
Motorized Bicycle Apprentice
 
Join Date: Aug 2008
Posts: 13
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.
Reply With Quote
  #9 (permalink)  
Old 08-07-2008, 04:39 PM
Bikeguy Joe's Avatar
MODERATOR
 
Join Date: Jan 2008
Location: Ashtabula county, Ohio
Posts: 4,244
Default Re: Couple of small issues to be addressed

Why don't you use the tensioner to make the chain a little tighter?
__________________
If it ain't broke, and you mess with it long enough, it will be.
Reply With Quote
  #10 (permalink)  
Old 08-07-2008, 04:48 PM
badpenny's Avatar
Motorized Bicycle Apprentice
 
Join Date: Aug 2008
Posts: 13
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.
Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 07:45 PM.


Advertisers

Powered by vBulletin® Version 3.6.8
Copyright ©2000 - 2008, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.1.0
Motorized Bicycle Engine Kit Forum