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

New: Take Part in the June Giveaway to Win the Kazam Buddi 20" Aluminum Trailer Bike


Installing vintage crank arm
#1
I was wondering if anybody knows how to install a 1980's model Raleigh crank arm. It fell off of my friends bike while he was riding. The square bolt is still attached to the bottom bracket. Any help is appreciated.

[attachment=4272]
  Reply
#2
if it fell off, it probably has been loose for a long time and is damaged beyond useable.

That said; unscrew the round cap (a coin works as a screw driver); underneath you will find a loose nut or bolt. Put the crank back on the bottom bracket (BB) axle, re-install the nut or bolt (usually takes a 14mm socket), tighten until the crank is fully seated (no wobble).

If there is any wobble, a new crank is required.
Nigel
  Reply
#3
Awsome thanks that helps a lot. If a new crank is needed, what style/size crank would i look for.
  Reply
#4
(06-27-2013, 06:54 PM)jrippah Wrote:  .... If a new crank is needed, what style/size crank would i look for.

one the same length, for the same side of the bike, same interface to the BB.

For example:
http://www.amazon.com/XLC-Alloy-Crank-Arm-Diamond/dp/B005YO157O/
is 170mm long, for the left side, for a square taper BB.

Note: some cranks for square taper have diamond holes, and some have square; the have to match on both sides of the bike.
Nigel
  Reply


Possibly Related Threads...
Thread
Author
Replies
Views
Last Post
 
29,168
07-19-2021, 12:00 AM
Last Post: rbx
 
7,270
06-10-2014, 01:47 AM
Last Post: 1FJEF
 
13,992
02-08-2011, 01:17 PM
Last Post: JohnV
 
9,043
08-24-2010, 04:46 AM
Last Post: trevgbb
 
33,027
06-15-2010, 04:06 PM
Last Post: laumi

Forum Jump:

[-]
10 Latest Posts
action camera
06-21-2024 02:08 PM
What did your first bicycle mean to you?
06-21-2024 02:04 PM
Tubeless Sealant
06-21-2024 01:15 PM
Paris-Roubaix
06-20-2024 06:23 PM
Identifying a Bianchi Boardwalk bicycle
06-20-2024 04:39 PM
What are your best tips for long rides?
06-19-2024 07:53 PM
Forgot to introduce myself!
06-19-2024 05:48 PM
thru axles replacement
06-19-2024 06:00 AM
Fat bikes for ever..
06-19-2024 02:52 AM
Reasons to buy aluminium not carbon bike...
06-18-2024 12:19 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
41 posts
no avatar 2. enkei
26 posts
no avatar 3. Dusan
13 posts
no avatar 4. Amanda_W
12 posts
no avatar 5. GirishH
12 posts