Retrobike Forum Index

It is currently Thu Dec 08, 2016 9:14 am

* Login   * Register * Search  * FAQ



Post new topic Reply to topic  [ 5 posts ] 
Author Message
PostPosted: Fri Nov 12, 2010 2:00 am 
Dirt Disciple

Joined: Wed Nov 10, 2010 4:27 pm
Posts: 14
I have a M900 front and rear derailure and M900 shifters, but no cassette.

I have found that there are two different m900 cassettes.
I am looking at the 12/28 versions. There is a P type and a Q type.
I am looking at getting this one,
Shimano M900i type Q 8 speed cassette.
Will this work?

What is the difference and what do I need for my bike?

Here is my bike http://www.retrobike.co.uk/forum/viewtopic.php?t=124673


Top
 Profile  
 
 Post subject:
PostPosted: Fri Nov 12, 2010 9:30 pm 
Deputy National AEC
Deputy National AEC
User avatar

Joined: Wed Jun 04, 2008 4:43 pm
Posts: 5169
Location: Cumbria, England.
The spider type is the difference, think the Q has a larger ratio also.


Top
 Profile  
 
 Post subject:
PostPosted: Fri Nov 12, 2010 10:21 pm 
retrobike rider
retrobike rider
User avatar

Joined: Fri Aug 08, 2008 2:36 pm
Posts: 16748
Location: Yorkshire, England
12-28 and 12-32 is the difference.
The 'I' is a lot harder to find, but it's been Interactive Glided (IG) aka in 8 speed and beyond.. to have ramp/profile on the rear sides of the sprockets not just to front. Also it's riveted on (so ignore a comment to come)

You can pick up a new SRAM PG850 cassette and that will work fine or my preference is CS-M737's as they well the same and come in 11-xx ratio's (they're also more robust in my opinion of going through many M900 BiTD as the bolts don't come loose, though I do have one with loose rivets)

Have a gander here for some pics, http://members.home.nl/children-of-the-korn/XTR900.htm

Also if that 7speed cassette doesn't have a spacer behind it (about 3.5mm ?) then you'll need a new wheel/hub


Top
 Profile  
 
 Post subject:
PostPosted: Fri Nov 12, 2010 11:29 pm 
Dirt Disciple

Joined: Wed Nov 10, 2010 4:27 pm
Posts: 14
Thanks, They are both available in 12/28 and 11/32. So the 900i will shift better? Yes my 7 speed does have a spacer installed.
I have a M737 that my friend gave me. I just wanted my bike to be all XTR


Top
 Profile  
 
 Post subject:
PostPosted: Sat Nov 13, 2010 9:21 am 
retrobike rider
retrobike rider
User avatar

Joined: Fri Aug 08, 2008 2:36 pm
Posts: 16748
Location: Yorkshire, England
Killer_V_900 wrote:
Thanks, They are both available in 12/28 and 11/32. So the 900i will shift better? Yes my 7 speed does have a spacer installed.
I have a M737 that my friend gave me. I just wanted my bike to be all XTR


It will shift slightly better going don the cassette. Well I noticed it between my M737 cassettes (they came in both as well)

M900 not 11/32, just 12/32
P type = 12-32
Q type = 12-28

You're looking at good money for M900 even used one's
M737 go for around £20 give or take £5
M900 can go for silly money now £60+ if new, even used seem to fetch £40+
as it the way for a number and a coating that flakes off and a lack of 11 tooth.
;)


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 5 posts ] 

All times are UTC [ DST ]


Who is online

Users browsing this forum: No registered users and 2 guests


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