Cycling Equipment · Public discussion

Re: Raleigh Twenty Bottom Bracket Shell

JeffWills · 2005-06-09T20:15:29+00:00

Has anyone taken a Twenty bottom bracket down that far, or is 73 the limit? --- Lars Lehtonen Many, many years ago I used a Raliegh Twenty BB shell for a recumbent project. After filing it down to 68mm width and retapping it for "standard" English threads, it worked fine. I think you'll be OK- you might want to saw off a slice off of each side, then mill the sides after tapping. Jeff

Started by JeffWills · 9 June 2005 · Last activity 9 June 2005 · 1 post · 407 views

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Original section: Cycling Equipment
Published: 9 June 2005
Last activity: 9 June 2005
Original author: JeffWills
Posts: 1
Discussion status: Public discussion
Total views: 407
Views / 30 days: 0
Topics: Bottom brackets

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Original post
JeffWills
Archived post

9 June 2005, 20:15 UTC #1

Quoted message said:
Has anyone taken a Twenty bottom bracket down that far, or is 73 the
limit?
---
Lars Lehtonen
Many, many years ago I used a Raliegh Twenty BB shell for a recumbent
project. After filing it down to 68mm width and retapping it for
"standard" English threads, it worked fine.
I think you'll be OK- you might want to saw off a slice off of each
side, then mill the sides after tapping.
Jeff

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