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


Crankset compatibility
#1
Hi, I've currently got a shimano crank-set with shimano 6-speed rear and front derailleur. Is it possible to use a different make if I replace the crank-set, for example if I brought a suntour crank-set? thanks for any advice you can give. Also my current crank-set/drive-train has a wobble in when I rotate the peddles, it's not loose or anything, it just doesn't rotate in a straight line, has a slight wobble to it, is there a way to fix this? thanks.
  Reply
#2
You can probably use just about any crankset with a 6 speed set up. Many newer cranks, especially higher end ones, are made to sit in closer to the bike so you might run into a situation where you need an longer bottom bracket. But you don't need to worry about matching brands.

The wobble could be a couple things. If just one chainring wobbles, it is probably the chainring itself that is bent. You may be able to bend it back straight. If both chainrings wobble identically, it could be that both rings got bent. But more likely that either the crankset itself is bent or that the axle (spindle) of your bottom bracket is bent. To tell which, you could try pulling the crank and put it on the other side of the bike for a test. If it still wobbles on the left - bent crank, if straight - bent spindle. Finally you might try just tightening down the crank, it could be coming loose and not sitting straight because of that.
  Reply
#3
The are actually 4 possibilities
1. Bent chairing as noted above
2. Crank/spindle interface - try removing the arm and reinstalling after rotating 90 degrees at a time to find the best position.
3. Bent spider arm - what Dave is calling a bent crank.
4. Bent spindle - rare, only one that require a replacement
  Reply
#4
Okay thanks for your replies, I will try those suggestions out, thankyou.
  Reply


Possibly Related Threads...

Forum Jump:

[-]
10 Latest Posts
Post-Ride Nutrition
Today 02:06 AM
🚴‍♂️ Saddle Up for the Belgian Waffle Ri...
Today 02:03 AM
Pre Ride Food Intake
Today 12:14 AM
SAVA Explorer 6061?
Yesterday 03:31 PM
braking by reversing the pedals
Yesterday 01:00 PM
Zwift v Spin v Wahoo
04-01-2025 05:59 PM
Have you Ever Tried an Electric Bike?
04-01-2025 05:07 PM
Good Morning from SW Ohio
04-01-2025 07:32 AM
(So California) PV Dr to be closed to bi...
03-31-2025 09:14 PM
Tubeless vs. tubes: What are the pros an...
03-31-2025 08:28 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. GirishH
22 posts
no avatar 2. Flowrider
19 posts
no avatar 3. meamoantonio
12 posts
no avatar 4. Jake1
11 posts
no avatar 5. enkei
9 posts