A Cycling & bikes forum. CycleBanter.com

Go Back   Home » CycleBanter.com forum » rec.bicycles » Techniques
Site Map Home Register Authors List Search Today's Posts Mark Forums Read Web Partners

Why did rear derailleur cable move from top to bottom of chainstay?



 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
  #12  
Old August 9th 19, 03:10 AM posted to rec.bicycles.tech
Frank Krygowski[_4_]
external usenet poster
 
Posts: 7,602
Default Why did rear derailleur cable move from top to bottom ofchainstay?

On 8/8/2019 8:55 PM, jbeattie wrote:
On Thursday, August 8, 2019 at 1:39:57 PM UTC-7, AMuzi wrote:
On 8/8/2019 2:54 PM, Tom Kunich wrote:
On Tuesday, August 6, 2019 at 7:34:51 AM UTC-7, Sir Ridesalot wrote:
I was looking at a couple of my old bicycle frames with the rear derailleur cable routed along the top of the chainstay. I'm curious now. Why did the rear derailleur cable routing get moved to under the chainstay?

Cheers

Andrew told us about when it happened but not why. The rear derailleur cable was moved when the downtube friction shifters were moved to Shimano Brifters in the 70's.

Running the cables under the downtube gave the cables a cleaner run from the head tube to the under bottom bracket plastic runner.


First modern under-BB guides were steel, mid 1970s.
First nylon gear plate was Vitus in 1979.
First integrated shifter was Shimano 1990, followed by
Campagnolo Ergo a year or so later.


With the Vitus, the cables were structural. https://tinyurl.com/y4kh5o3g It was the first cable-stay frame design and ensured that the tubes would not separate in the event of epoxy failure.


Just curious: Were there many joint failures in Vitus frames? I don't
remember.


--
- Frank Krygowski
 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Rear Derailleur Cable Phil H Techniques 7 December 17th 10 09:23 PM
rear derailleur cable loop - conflicting advice Josh Hassol General 7 May 28th 06 04:50 AM
Rear derailleur initial cable tension Josh Hassol Techniques 21 February 11th 06 01:11 AM
Colnago Front Derailleur Cable Rubbing on Bottom Bracket jimbob369 Techniques 5 November 15th 05 01:53 PM
replaced rear derailleur cable...now what. gabrielle Mountain Biking 14 September 9th 05 03:17 AM


All times are GMT +1. The time now is 03:46 PM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Copyright 2004-2019 CycleBanter.com.
The comments are property of their posters.