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  [ 25 posts ] 
Go to page Previous  1, 2
Author Message
PostPosted: Tue Feb 19, 2013 8:35 pm 
Offline

Joined: Tue Feb 05, 2013 8:29 pm
Posts: 236
Something to note about Red: The new model with the Yaw FD doesn't have the mushy titanium cage that Red Black had, so it performs about 5800x better.


Top
 Profile  
 
PostPosted: Thu Feb 21, 2013 8:34 am 
Offline

Joined: Sun Nov 04, 2012 11:36 am
Posts: 71
Quote:
So is the 7900 shifting components still strong enough for racing? Is it hard to keep adjusted?


yep, these show up in the pro tour so i guess they're good enough for the rest of us. aside from some barrel adjustment, i never had to do any major adjustments with mine.

_________________
http://www.roadiemanila.com


Top
 Profile  
 
Posted: Thu Feb 21, 2013 8:34 am 


Top
  
 
PostPosted: Thu Feb 21, 2013 8:49 am 
Offline

Joined: Thu Sep 04, 2008 9:48 am
Posts: 758
Location: Brighton, UK
PSM wrote:
aerozy wrote:
7900 works fine but its more sensitive to friction than other groups, meaning over time any added wear in the drivetrain or cables and the shifting will degrade faster. I always notice that if I ride consecutive days in bad weather conditions the shifting usually goes to shit.


Are you serious? :unbelievable:



You bet I am. Have you ridden 7800? Have you ridden 7900? Now tell me which shifts better even out of the shop. Now ride both in bad weather conditions. You'll be tweaking the cable tension on the 7900 after only a few rides while you wont feel the need to touch the 7800 for months.

Of course that a well maintained 7900group shifts well enough for racing. Thats not my point. My point is its more finicky. Ok it takes 30s to clear the dirt from the cables but why do I have to that to begin with? Again 7800 ... throw it in a mud pit and it still shifts well on end. fewwwwww :roll:

_________________
Strava


Top
 Profile  
 
PostPosted: Thu Feb 21, 2013 9:37 am 
Offline
Formerly known as wassertreter

Joined: Tue Apr 12, 2011 8:08 am
Posts: 2013
Location: Pedal Square
I can confirm that I'm on the barrel adjusters quite frequently at the start of a ride with the 7900. But my setup is not pure with the Nokon and Red cassette. This is the case on all my bikes that have Nokon cables, I shall forego them for the next build, to check.

_________________
Bikes: Raw Ti, 650b flatbar CX


Top
 Profile  
 
PostPosted: Thu Feb 21, 2013 11:43 am 
Offline
User avatar

Joined: Tue Aug 28, 2012 2:45 pm
Posts: 853
Location: Stockholm, The Arctic...
aerozy wrote:
PSM wrote:
aerozy wrote:
7900 works fine but its more sensitive to friction than other groups, meaning over time any added wear in the drivetrain or cables and the shifting will degrade faster. I always notice that if I ride consecutive days in bad weather conditions the shifting usually goes to shit.


Are you serious? :unbelievable:



You bet I am. Have you ridden 7800? Have you ridden 7900? Now tell me which shifts better even out of the shop. Now ride both in bad weather conditions. You'll be tweaking the cable tension on the 7900 after only a few rides while you wont feel the need to touch the 7800 for months.

Of course that a well maintained 7900group shifts well enough for racing. Thats not my point. My point is its more finicky. Ok it takes 30s to clear the dirt from the cables but why do I have to that to begin with? Again 7800 ... throw it in a mud pit and it still shifts well on end. fewwwwww :roll:



I rode 7800 for 2 years and 7900 for 2 as well. Biggest difference is the better breaking power for the latter.


Top
 Profile  
 
PostPosted: Tue Jun 18, 2013 3:46 pm 
Offline
Resident Pro

Joined: Fri Jul 03, 2009 5:17 pm
Posts: 65
Hi guys, I wanted to update you with my bike that I put 7900 on. The 7900 was the right way to go in my opinion although it did start falling apart recently....I guess I shift too much.
It is a non-branded frame that says Champion System on it. I have no idea what it is but it rides totally fine. I've been racing on Stans NoTubes prototype carbon wheels and I can say now they are race proven. I podiumed at the Tour de Beauce Mt. Meganitic stage with them. I came oh so close to winning the stage. I'm still kicking myself. 5th overall at the end of the week.
I dont know the weight for the bike but it is not that light but not heavy either, its a race bike so we can't make it that light any way.
Image

Image

Image


Top
 Profile  
 
PostPosted: Tue Jun 18, 2013 5:19 pm 
Offline

Joined: Fri Aug 06, 2010 1:35 pm
Posts: 1495
Location: Geneva
News Alert!

It's not the bike that matters, it's the legs and it sounds like you've got that covered ;-)

On 7900, it's ok, but I'm far from blown away. Once set up and running well, I'd take Chorus/Record.


Top
 Profile  
 
PostPosted: Tue Jun 18, 2013 5:52 pm 
Offline
User avatar

Joined: Tue Aug 28, 2012 2:45 pm
Posts: 853
Location: Stockholm, The Arctic...
mattcooke wrote:
Hi guys, I wanted to update you with my bike that I put 7900 on. The 7900 was the right way to go in my opinion although it did start falling apart recently....I guess I shift too much.
It is a non-branded frame that says Champion System on it. I have no idea what it is but it rides totally fine. I've been racing on Stans NoTubes prototype carbon wheels and I can say now they are race proven. I podiumed at the Tour de Beauce Mt. Meganitic stage with them. I came oh so close to winning the stage. I'm still kicking myself. 5th overall at the end of the week.
I dont know the weight for the bike but it is not that light but not heavy either, its a race bike so we can't make it that light any way.
Image

Image

Image



Ouch! Mixing SRAM with D-A? The best with D-A is certainly the stiff crank... :smartass:


Top
 Profile  
 
PostPosted: Tue Jun 18, 2013 5:55 pm 
Offline
Resident Pro

Joined: Fri Jul 03, 2009 5:17 pm
Posts: 65
Thanks guys. Also I was running Praxis rings and they are flipping awesome.

As for mixing I had no choice, we made it work well enough though ;)


Top
 Profile  
 
PostPosted: Tue Jun 18, 2013 7:38 pm 
Offline

Joined: Mon Jul 18, 2011 2:44 am
Posts: 1398
matt good job at beuce! been following the coverage just via steep hill and dan chab's tumblr. I am always hopefully for a D.C native to do well in big races! =)


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 25 posts ] 
Go to page Previous  1, 2


Who is online

Users browsing this forum: Bing [Bot], budgetweenie, ferrarista, Google [Bot], IhmeKameli, KLabs, wrcompositi and 36 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

478

Wed Nov 05, 2014 3:48 pm

octav View the latest post

There are no new unread posts for this topic. Upgrading to dura-ace 7900 di2

in Road

fancycoconut

3

433

Tue Apr 22, 2014 3:48 pm

fancycoconut 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

751

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

273

Wed Sep 03, 2014 1:31 pm

amey View the latest post


It is currently Fri Nov 28, 2014 5:19 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