Motorized Bicycle Engine Kit Forum  

Sponsors



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, if you could use some help in figuring out what is wrong with your engine and what needs to be done to achieve top performance.

Reply
 
Thread Tools Display Modes
  #1  
Old 11-19-2016, 05:37 PM
Hannibelle Hannibelle is offline
Motorized Bicycle Newbie
 
Join Date: Nov 2016
Location: Georgia
Posts: 1
Default Chain Keeps Jumping Off the Motor

This is my first electric bike build. I used a 24v Razor scooter motor and custom sprocket. The motor chain keeps jumps off, especially when on full power. There is a little bit of slack in chain by half a chain link. How can I fix this?
Reply With Quote
  #2  
Old 11-19-2016, 06:13 PM
Seabass Seabass is offline
Motorized Bicycle Senior Member
 
Join Date: Oct 2016
Location: Colorado
Posts: 75
Default Re: Chain Keeps Jumping Off the Motor

Cut a link out and get a half link. Or move everything so it will be tighter.
Reply With Quote
  #3  
Old 11-20-2016, 11:21 AM
crassius crassius is offline
Motorized Bicycle Elite Member
 
Join Date: Sep 2012
Location: USA
Posts: 2,908
Default Re: Chain Keeps Jumping Off the Motor

or add a chain tensioner
__________________
Sometimes I sets and thinks, sometimes I jes sets.
Reply With Quote
  #4  
Old 11-20-2016, 11:24 AM
2door's Avatar
2door 2door is offline
Super Moderator
 
Join Date: Sep 2008
Location: Littleton, Colorado
Posts: 16,254
Default Re: Chain Keeps Jumping Off the Motor

Quote:
Originally Posted by Hannibelle View Post
This is my first electric bike build. I used a 24v Razor scooter motor and custom sprocket. The motor chain keeps jumps off, especially when on full power. There is a little bit of slack in chain by half a chain link. How can I fix this?
Chain tension probably isn't the issue but sprocket alignment is. Unless the drive and driven sprockets are perfectly aligned you're going to have chain problems. A very loose chain can be a problem but alignment is usually the culprit.

Also a chain that is too tight can also give you problems. Roller chain requires some slack, usually about a half inch is good.

Tom
__________________
Age and Treachery Will Always Triumph
Over Youth and Skill & "Charlie Don't Ride"
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

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 08:46 PM.


Sponsors

Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
MotorBicycling.com