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  [ 4 posts ] 
Author Message
PostPosted: Tue Apr 22, 2014 2:37 am 
Offline

Joined: Tue Apr 22, 2014 2:17 am
Posts: 21
I currently have ultegra 6700 crank, derailleurs and shifters on my felt fc. I am upgrading to dura-ace 7600 di2 (7900 because im a junior racer and 10 speed is much more convenient). I was wondering if this was going to be a weight gaining or losing upgrade, I am however keeping my ultegra crank (because I don't want to have to sell my ultegra stages pmeter and buy a dura-ace pmeter). Any idea if my steed is gonna put on a couple of grams?
-e

_________________
Felt F Custom Build 6.93 kg


Top
 Profile  
 
Posted: Tue Apr 22, 2014 2:37 am 


Top
  
 
PostPosted: Tue Apr 22, 2014 6:10 am 
Offline

Joined: Wed Feb 03, 2010 1:31 am
Posts: 326
I have Di2 7970 10 speed on one bike. It weighs more than mechanical derailleurs. Then add in the weight of the battery. Not sure if Di2 shifters are heavier or lighter than mechanical shifters. Overall it will gain weight. Not enough to matter, but a little extra.


Top
 Profile  
 
PostPosted: Tue Apr 22, 2014 1:46 pm 
Offline

Joined: Sat Jul 17, 2010 11:36 am
Posts: 170
I would seek out one of FWB's "complete group weight" forum posts and modify it to account for the known weight of your Ultegra crank.

And the 7970 Di2 shifters are *much* lighter than mechanical counterparts on 6700 and 7900 groups. This is one aspect of the first generation Di2 that realized a huge weight reduction because mechanical tumblers and ratchets were replaced by simple electric switches.

-Tim


Top
 Profile  
 
PostPosted: Tue Apr 22, 2014 3:48 pm 
Offline

Joined: Tue Apr 22, 2014 2:17 am
Posts: 21
ok, not a bad idea Tim...
I won't worry about it too much because I think I am going to buy a custom wheelset from fairwheel which should drop about 300-400 grams

_________________
Felt F Custom Build 6.93 kg


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 4 posts ] 


Who is online

Users browsing this forum: Bing [Bot], bontyboy, corky, Exabot [Bot], ironman1, KLabs, shadowman, Shoeman, Skorp and 55 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. 53/38T on dura-ace 7900 srm

in Road

dmoneysworks

6

482

Wed Nov 05, 2014 3:48 pm

octav View the latest post

There are no new unread posts for this topic. Dura Ace 7900 Chainrings

in Road

Feex

0

369

Fri Feb 14, 2014 4:22 am

Feex View the latest post

This topic is locked, you cannot edit posts or make further replies. Dura Ace 7850/7900 to 11 speed

in Road

upside

2

752

Mon May 26, 2014 10:19 am

ToffieBoi View the latest post

There are no new unread posts for this topic. Dura ace 7900 front brake installation issue

in Road

amey

4

274

Wed Sep 03, 2014 1:31 pm

amey View the latest post

There are no new unread posts for this topic. Dura Ace 7900 front hub service- Teeth cone stuck

in Road

athletic91

1

136

Tue Oct 21, 2014 12:41 pm

lannes View the latest post


It is currently Fri Nov 28, 2014 10:58 pm

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