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

New: Take Part in the May Giveaway for a Change to Win the Thruster 27.5 Retrograde BMX Cruiser Bike


110.5mm to 110mm Bottom Bracket
#1
I need to replace my 110.5 mm bottom bracket. There is more choice and a lower price for 110mm bottom brackets. Can I use the 0.5mm shorter one. Is the difference a simple 0.5mm or is there a reason for the very slight different size?. Thanks
  Reply
#2
0.5mm is not going to make a significant difference.

You do not mention the type of bike, but if derailleur equipped, even 5.0 mm is not going make much difference.
Nigel
  Reply
#3
Thanks. Its a Scott mountain bike. I am just confused as to why both sizes exist with such a small difference between them. If the only difference is 0.25mm on each end the 110mm should be fine.
  Reply
#4
It all boils down to how precise a manufacturer likes to get. Shimano may lable it a 110 and YST may say 110.5mm.
The (popular) nominal sizes for square taper spindles are 107, 110, 113, 115, 118, 122 and 127. You can safely ignore any decimal points.

In laymans terms, Spindle length required is mostly determined by the amount of clearance needed between the chainrings and the right-side chainstay of the frame. Most bikes can be fudged a bit in either direction without exploding but, shifting performance may suffer. That's getting into chainline science and is a topic for another day. Was that Too Much Info?
Wheelies don't pop themselves. (from a QBP fortune cookie)
  Reply
#5
Thanks. 110 it is then. I expect the tiny difference, if there is any, is less than the play in the current worn bottom bracket. The smallest distance between chainring or crankarm and frame is about 7mm so it should be fine. Thanks for clarifying.
  Reply


Possibly Related Threads...

Forum Jump:

[-]
10 Latest Posts
Adding brake to kids balance bike
Yesterday 11:06 PM
YABD - vintage Bernard Carré frame, etc
Yesterday 07:13 PM
What are your best tips for long rides?
Yesterday 10:34 AM
Classic MTB: Kirk Revolution DC magnesiu...
06-11-2024 06:03 PM
Forgot to introduce myself!
06-10-2024 10:19 PM
Problem > Solution
06-10-2024 09:41 PM
tried absolutely everything to fix these...
06-08-2024 04:05 PM
Tips for Cyclists
06-08-2024 01:39 PM
Hello!
06-08-2024 12:42 PM
SRAM chainring 48/35 torque settings
06-08-2024 11:10 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. Jesper
47 posts
no avatar 2. enkei
29 posts
no avatar 3. Dusan
16 posts
no avatar 4. Amanda_W
12 posts
no avatar 5. meamoantonio
9 posts