Originally Posted by
HillRider
I believe you have this a bit backwards. Narrow 6-speed freewheels (Ultra-6) were close to 5-speed in overall width and fit on 120 mm OLD hubs. Regular spaced 6-speed freewheels were close in width to 7-speed freewheels and fit on 126 mm hubs. 8-speed freewheels (the few ever made) were wider still and used 130 mm OLD hubs just like 8/9/10-speed freehubs.
You are free to argue with Mr. Sutherland, Jobst Brandt, and just about anyone who has been around longer than I have who has been involved in documenting standards and common industry practices over the last 5 decades...those are their numbers...not mine.
Sure you can fudge the narrow 6 on 120-122mm...but "A' is the spec that keeps you out of trouble...that's why I made it clear - the freewheel part is what has to be right - "A".
=8-)
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5000+ wheels built since 1984...
Disclaimer:
1. I do not claim to be an expert in bicycle mechanics despite my experience.
2. I like anyone will comment in other areas.
3. I do not own the preexisting concepts of DISH and ERD.
4. I will provide information as I always have to others that I believe will help them protect themselves from unscrupulous mechanics.
5. My all time favorite book is:
Kahane, Howard. Logic and Contemporary Rhetoric: The Use of Reason in Everyday Life
Last edited by mrrabbit; 01-19-12 at 10:04 PM.