Rookie question from the shed
Printed From: BHPC Forum
Category: Public: Open to anyone
Forum Name: Building
Forum Description: Anything to do with building HPVs
URL: https://forum.bhpc.org.uk/forum_posts.asp?TID=5217
Printed Date: 26 March 2026 at 11:30pm
Software Version: Web Wiz Forums 12.07 - https://www.webwizforums.com
Topic: Rookie question from the shed
Posted By: tincanracer
Subject: Rookie question from the shed
Date Posted: 22 November 2015 at 4:46pm
|
Hi All, Not precisley about our sort of bikes but an HPV none the less. I bought a Dawes Galaxy frame and found the threads in the bottom bracket part are too worn to accept a new bottom bracket. I have found, on ebay, some BBs that are for shells with worn threads, the two halfs screw into each other, they are 68 mm wide which is correct for my frame. My question is that they come in various sizes, 110mm, 113mm, 116mm, 119mm or 122.5mm, how do I measure what one I need for a double chain wheel crank? Please help or I will have to come in from the shed and watch Strictly  !Thanks Stuart ------------- Laid Back in Spirit |
Replies:
Posted By: Andrew S
Date Posted: 22 November 2015 at 7:15pm
|
Stuart - not such a rookie question: spindle length is a minefield. The length of axle you need depends crucially on the make/design of the righthand crank and where you want the chainline as well as, of course, the crank/axle type (square-taper or splined). If you haven't already found it Sheldon Brown's http://sheldonbrown.com/bbsize.html" rel="nofollow - Bottom Bracket Database has an excruciating amount of detail. It may not have your exact cranks (unless they're Shimano) but you should at least be able to find the measurements you need to make. |
Posted By: tincanracer
Date Posted: 25 November 2015 at 4:21pm
|
Thanks Andrew. The Sheldon Brown website is a mine of useful information for the my winter build. Stuart ------------- Laid Back in Spirit |