HOT: Active* forum members generally gain 5% discount at starbike.com store!
Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Articles FAQ Contact About




Post new topic Reply to topic  [ 6 posts ] 
Author Message
PostPosted: Fri Oct 26, 2012 5:16 am 
Offline

Joined: Wed Sep 16, 2009 10:25 am
Posts: 129
Location: Australia
Just checking up on the weight of the double FC-M785- anyone here have actual weights?

Upgrading my girls mtb cranks from the heavy FC-M542's and want to see what sort of weight savings can be achieved. I would also consider the FC-M985 XTR double if there is a reasonable weight reduction.

FC-M542- 960 g with BB (I believe)
FC-M785 XT double -740g (Competitive Cyclist listed weight, BB included or excluded?) EDIT- Bike24 list these as 810g with BB which is less impressive...
FC-M985 XTR double 'Race'- 629g (Competitive Cyclist listed weight, BB included or excluded?)

So best case scenario that's a 331 g reduction if you go from M542 to XTR, sounds good right?

EDIT- May have just answered my own question, found this: http://www.birota.ru/files/news/2010/xtr-weight.pdf
So XTR FC-M985 is 715g

Making best case scenario 245g.

Thoughts on this being a good area to reduce weight?


Top
 Profile  
 
PostPosted: Fri Oct 26, 2012 6:43 am 
Offline
User avatar

Joined: Wed Dec 15, 2010 10:32 am
Posts: 280
Location: Estonia
FC-M785, 40/28, 175mm: 733g
BB: 92g, with 3x 2,5mm spacer.

Installed those yesterday.

_________________
"Nothing compares to the simple pleasure of a bike ride"
Scale 30
Schenk 007
29er build
Winter tank


Top
 Profile  
 
Posted: Fri Oct 26, 2012 6:43 am 


Top
  
 
PostPosted: Fri Oct 26, 2012 7:10 am 
Offline

Joined: Wed Sep 16, 2009 10:25 am
Posts: 129
Location: Australia
Thanks for that rainerhq.
So XT are about 150g lighter than the Deore M542's.


Top
 Profile  
 
PostPosted: Fri Oct 26, 2012 7:43 am 
Offline

Joined: Thu Jul 16, 2009 9:33 pm
Posts: 100
Here you have weights of whole group

http://www.sicklines.com/2010/08/24/ver ... -m980-xtr/


Top
 Profile  
 
PostPosted: Sat Oct 27, 2012 3:58 am 
Offline
User avatar

Joined: Tue Mar 08, 2005 10:01 pm
Posts: 661
Location: New Hampshire
My 175mm XT M785 26/28 came to 721 grams. BB was 91.


Top
 Profile  
 
Posted: Sat Oct 27, 2012 3:58 am 


Top
  
 
PostPosted: Sat Oct 27, 2012 9:45 pm 
Offline

Joined: Wed Jan 18, 2012 4:23 pm
Posts: 405
Location: Midlands, United Kingdom
I understand that the XT double (and bash) uses a thicker axle than the triple, so if you are WW it start with a triple even if you intend to bash it......plus the Shimano bash is very heavy, circa 150g

_________________
Impoverished weight weenie wanna-be!
Budget 26" HT build viewtopic.php?f=10&t=110956


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 6 posts ] 


Who is online

Users browsing this forum: No registered users and 5 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:  

   Similar Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. Shimano Ultegra & Dura Ace left crank arm weight?

in Road

JBV

8

1150

Sun Mar 30, 2014 1:38 am

JBV View the latest post

There are no new unread posts for this topic. Tuning Deore XT M785 levers

in MTB

Spikes

3

643

Thu Sep 19, 2013 2:52 pm

TheRookie View the latest post

There are no new unread posts for this topic. Shimano BB Crank compatibility

in Road

Oswald

5

578

Mon Nov 11, 2013 12:34 pm

Oswald View the latest post

There are no new unread posts for this topic. shimano crank in BB83 possible?

in Road

RMcC

5

406

Sun Dec 22, 2013 12:14 pm

MajorMantra View the latest post

There are no new unread posts for this topic. Shimano 9000 crank with 10 sp Di2 - is it ever simple?

[ Go to page: 1, 2 ]

in Road

hatone

16

2074

Fri Oct 04, 2013 8:10 pm

paulm2322 View the latest post


It is currently Sat Apr 19, 2014 6:16 am

All times are UTC + 1 hour




Advertising   –  FAQ   –  Contact   –  Convert   –  About

© Weight Weenies 2000-2013
hosted by starbike.com


How to get rid of these ads? Just register!


Powered by phpBB