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Conference noted::bicycle

Title:	Bicycling
Notice:	Bicycling for Fun
Moderator:	JAMIN::WASSER

Created:	Mon Apr 14 1986
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	3214
Total number of notes:	31946

2393.0. "conversion from 7-speed to 8-speed" by STAR::ZIELONKO () Tue Aug 25 1992 13:31

i am buying a new frame which will be spread for 8 speed where my old frame was
not. my goal is to roll over as much of my equipment from my old frame as
possible. recently i heard that, because 8-speed chains are so narrow, you have
to get new cranks cuz the 8-speed chain can fall between the chainrings. the
person that told me this showed me a campy crank with an "8V" stamped on it
signifying that it was for 8-speed. he said he went to a machine shop and had
them take off 3mm from the inside face of the part of the spider against which
the inner chainring butts.

i would imagine there are plenty of you out there who've gone through this.
exactly what did you do?

karol

T.R	Title	User	Personal Name	Date	Lines
2393.1	I did the same thing, without special equipment	CIMNET::MJOHNSON	Matt Johnson	`Tue Aug 25 1992 14:05`	3
	At least the Shimano system doesn't require any special crank, chain, cogs, or anything but the right spacers (between cogs) and the 8-speed freehub itself.
2393.2		DECWET::BINGHAM	John Bingham	`Tue Aug 25 1992 14:26`	2
	Doesn't the Shimano 8-speed require 130 mm dropouts? Where the 7-speed worked with 126 mm ones.
2393.3	NOT TRUE (IN MY EXPERIENCE)	WMOIS::GIROUARD_C		`Tue Aug 25 1992 15:24`	8
	I think that's an old wives tale... I have the old Campy crankset (pre-8spd cassette) and did nothing and have had no problems with anything like that in a season and a half - I ran down tube 8 spd shifters for a 1/2 season and have been on my Ergos all this season. I haven't even dropped my chain... Chip
2393.4		CIMNET::MJOHNSON	Matt Johnson	`Tue Aug 25 1992 15:32`	2
	The Shimano hub is designed to easily spread the 126mm dropouts when you install it. No permanent bending is necessary.
2393.5	The essence of redundancy	NQOPS::CLELAND	Centerline violation...	`Wed Aug 26 1992 09:33`	10
	This topic has already been started, #2256. Someone even tried to restart it at topic #2333. The author didn't know that the topic had already been started. But what the heck, Every topic in this conference has been restarted at least half a dozen times, why should 8-speed conversion be any different? Awww, friggit...
2393.6		NOVA::FISHER	Rdb/VMS Dinosaur	`Wed Aug 26 1992 11:01`	10
	yeah, look at all the notes we get that go something like: ---------------------------------------- For sale: bike $200 555-5555 ---------------------------------------- :-)
2393.7	oops	STAR::ZIELONKO		`Wed Aug 26 1992 15:03`	3
	> This topic has already been started, #2256. i will refer to that note. thank you.
2393.8	No problema	NQOPS::CLELAND	Centerline violation...	`Thu Aug 27 1992 16:03`	8
	No big deal, we know you're just looking for some assistance. Everyone in this conference is more than willing to help. It's just that there are more than 2000 topics in here, so you can usually find the subject you're interested in by entering DIREC/ALL. Ahhh, life goes on...