Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take part in the November Giveaway for the TurboAnt Thunder T1 Fat Tire E-bike


Single speed chainring conversion
#1
Actually the bike was already a single speed but the gear inches were too high. I chucked out the heavy steel stock crankset & had cassette brng. alu cranks put in with a smaller (34 tooth) chainring and the longest pedals i could find. (17 mm.)

Problem is that the chain line isn't quite straight. The freewheel needs slight spacing out from the hub, and that won't work without sacrificing the freewheel's thread bite. Also, any spacer wd. have no backing and hence butt up against the spokes. (there's no adjustment play at the crankset, wh. is already flush with the frame)

Is there anything doable? if left as is, am i looking at more chain wear than if it led straight?
  Reply
#2
Re-space the rear axle and re-dish the spokes or get a BB with a shorter spindle.
A spacer behind the freewheel (if the right size) would butt up against the same shoulder the freewheel does, so it shouldn't hit the spokes. But, you're right, more than a couple mm of spacer weakens the freewheel to hub junction.

A little misalignment of the chainline (<1 cm?) is probably OK. Maybe more chain and chainring wear and higher chance of chain popping off.
  Reply


Possibly Related Threads...
Thread
Author
Replies
Views
Last Post
 
15,428
09-20-2013, 05:07 AM
Last Post: MorganIRL
 
19,197
07-10-2011, 11:34 AM
Last Post: nfmisso
 
13,249
12-20-2010, 01:44 PM
Last Post: DaveM
 
30,023
06-21-2010, 09:17 AM
Last Post: xerxes
 
9,349
01-05-2010, 11:00 PM
Last Post: Alex Ramon
 
14,164
08-17-2009, 03:29 AM
Last Post: DaveM

Forum Jump:

[-]
10 Latest Posts
Seeking recommendations
Yesterday 03:32 AM
Which aspects of e-bikes do you think ar...
12-04-2021 10:24 PM
Help! Trying to identify this bike
12-04-2021 02:45 AM
Please help me identify this old bicycle...
12-02-2021 11:36 AM
What is your dream cycling destination?
12-01-2021 02:33 AM
LYGIE AND ATALA WINTER PROJECTS
11-30-2021 10:34 AM
Yet another bike ID thread (Pseudo-Batta...
11-30-2021 06:18 AM
Schwinn meridian fork replacement
11-30-2021 12:41 AM
New Memeber
11-27-2021 06:51 PM
Budget Carbon Frames! ...who has bought...
11-26-2021 12:45 AM

[-]
Join BikeRide on Strava
Feel free to join if you are on Strava: www.strava.com/clubs/bikeridecom

[-]
Top 5 Posters This Month
no avatar 1. ReapThaWhirlwind
30 posts
no avatar 2. Jesper
21 posts
no avatar 3. jeffg
7 posts
no avatar 4. steven chen
6 posts
no avatar 5. Papa Dom
5 posts