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


Acceptable range of alignment?
#1
I am overhauling a trek MTB and I noticed that the alignment of the Crank arm and the cassette is causing the chain to bend toward the crank by more than 2mm (not the rear derailleur, the bike is upside down and I am looking straight back from the Crank to the cassette).
The bottom bracket cartridge and crank arm are fully tightened. Is this a normal accepted berth that I have never noticed? I have adjusted the front and rear to shift normally, but should the chain be curving like that?
Is this a definate offset between the freewheel and the front drivetrain?
  Reply
#2
What gear are you in when you check this? If you are on the big chain ring on the front and the big gear in the back it will be that way. Put the front gear on the small gear and the back gear on the big gear then look to see what it looks like. It should be straight back it should look straight when you look at it. If not then you will need to get a spacer for the back gears to move it a little. Hope this helps out. I know what I am trying to tell you but it may have came out all wrong lol. Maybe some one can tell you a little better than I have. If not take it to your bike shop and let them take a look at it. Good luck to you and your bike.
My dad always told me a Sledge a matic can fix any thing.
  Reply


Possibly Related Threads...
Thread
Author
Replies
Views
Last Post
 
6,336
07-13-2020, 03:40 PM
Last Post: Jesper
 
11,826
02-23-2013, 01:20 PM
Last Post: Chuck
 
11,873
10-13-2012, 10:06 PM
Last Post: RobAR
 
30,107
02-19-2012, 09:13 PM
Last Post: capner2112

Forum Jump:

[-]
10 Latest Posts
I got new Tioga FASTR X Tires (Ask Me An...
Today 03:18 PM
Are You Riding the TDF
Today 12:20 PM
Tour de FRANCE 2025
Today 09:52 AM
What are the pros and cons of using a 26...
Today 09:46 AM
The great thing about trikes
Today 09:27 AM
Japanese Bike Brands
Today 08:27 AM
Continued learnings from bikepacking
Yesterday 11:34 PM
Gandolfi "Super" model 1985-86 racing bi...
07-04-2025 01:33 PM
How I used to clean my bike
07-03-2025 04:43 PM
Cassette shifting Problem
07-03-2025 02:51 PM

[-]
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. GirishH
23 posts
no avatar 2. meamoantonio
17 posts
no avatar 3. Flowrider
17 posts
no avatar 4. Jesper
14 posts
no avatar 5. enkei
13 posts