Retrobike Forum Index

It is currently Sat Dec 03, 2016 8:14 am

* Login   * Register * Search  * FAQ



Post new topic Reply to topic  [ 7 posts ] 
Author Message
 Post subject: M900 7 Speed cassette?
PostPosted: Sat Apr 01, 2006 8:28 pm 
Old School Hero
User avatar

Joined: Fri Mar 03, 2006 12:20 am
Posts: 226
Location: bristol
Has anyone else ever seen or heard of a 7 speed M900 cassette?

Every search I've done and the shimano timeline http://www.firstflightbikes.com/shimano.htm only relate to M900 8 speed starting in 1992. I cannot find 7 speed M900 anywhere. :?


Attachments:
File comment: PK relates to November 1991, and all sprockets are matched (set Q)
m900 7 speed 007a.jpg
m900 7 speed 007a.jpg [ 123.61 KiB | Viewed 2278 times ]
File comment: That M900 Badge, and the PK date code and set Q codes confirmed.
m900 7 speed 004a copy.jpg
m900 7 speed 004a copy.jpg [ 104.83 KiB | Viewed 2278 times ]
File comment: But only 7 speed?
m900 7 speed 001a.jpg
m900 7 speed 001a.jpg [ 117.15 KiB | Viewed 2278 times ]
Top
 Profile  
 
 Post subject:
PostPosted: Mon Apr 03, 2006 11:52 am 
retrobike rider
retrobike rider
User avatar

Joined: Wed Jan 04, 2006 10:12 pm
Posts: 2993
Location: Northumberland
What ratios are there? Sounds like a bodge :?


Top
 Profile  
 
 Post subject:
PostPosted: Mon Apr 03, 2006 6:46 pm 
Old School Hero
User avatar

Joined: Fri Mar 03, 2006 12:20 am
Posts: 226
Location: bristol
12,14,16,18,21,24,28 so pretty typical 7 speed ratios, all matching cogs too (set Q marked on all, as is the PK date code).

Bodge was my 1st thought, but doesn't seem to be.

Checked the sprocket spacing too - 5mm between centres (7 speed), not the 4.8mm of 8 speed, so this is definately a genuine 7 speed cassette.


Top
 Profile  
 
 Post subject:
PostPosted: Mon Apr 03, 2006 6:59 pm 
Gold Trader / PoTM Winner / RB Rider
Gold Trader / PoTM Winner / RB Rider
User avatar

Joined: Wed Oct 05, 2005 7:45 pm
Posts: 10934
Location: kent
I think that this cassette was probably fitted on a bike and not sold as spare . So not available to purchase on aftermarket .


Top
 Profile  
 
 Post subject: ?
PostPosted: Mon Apr 03, 2006 9:29 pm 
Old School Hero
User avatar

Joined: Fri Mar 03, 2006 12:20 am
Posts: 226
Location: bristol
pretty rare to find a good survivor then I guess?


Top
 Profile  
 
 Post subject:
PostPosted: Mon Apr 03, 2006 9:42 pm 
The Guv'nor
The Guv'nor
User avatar

Joined: Sun Jul 03, 2005 11:19 pm
Posts: 23175
Location: Retrobike HQ
Posting date duly noted.

Unless it's an April fool's I've not got a clue.


Top
 Profile  
 
 Post subject:
PostPosted: Mon Apr 03, 2006 9:53 pm 
Old School Grand Master

Joined: Wed Jun 29, 2005 11:18 am
Posts: 15804
Location: near cwmcarn
those original bolted together cassettes were sh,te! great idea yeh, able to replace seperate worn out cogs.. reality was even with thread lock the buggas always loosened off miles from home & your cassette would just disintergrate :(

"12,14,16,18,21,24,28 " the 12-28 Q type XTR 8spd had a 13T in there..

www.bikepro.com/products/freewheels/shimcass.html


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 7 posts ] 

All times are UTC [ DST ]


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  

About Us

Follow Retrobike

Other cool stuff

All content © 2005-2015 Retrobike unless otherwise stated.
Cookies Policy.
bikedeals - the best bike deals in one place
FatCOGS - Fat Chance Owner's Group

Powered by phpBB® Forum Software © phpBB Group