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




Post new topic Reply to topic  [ 3 posts ] 
Author Message
PostPosted: Thu May 16, 2013 6:36 am 
Offline

Joined: Mon Dec 31, 2012 5:27 am
Posts: 46
Hi,

as noted in here -
********************
http://www.bikerumor.com/2012/11/28/hac ... -cassette/" onclick="window.open(this.href);return false;
"stuck a 9-speed cassette on there and was able to use their micro adjust feature on the Di2 to get it shifting perfectly"
********************

i wonder how that can be achieved? As indicated -

http://sheldonbrown.com/cribsheet-spacing.html" onclick="window.open(this.href);return false;

, the center-to-center spacing is 4.34mm and 3.95mm for 9-speed and 10-speed cassettes respectively. Assuming the

derailleur is perfectly adjusted at the 5th cog on a 9-speed cassette, it would at least be mis-aligned 0.39mm at the closest cogs and 1.56mm at the furthest cogs.


Top
 Profile  
 
Posted: Thu May 16, 2013 6:36 am 


Top
  
 
PostPosted: Thu May 16, 2013 12:41 pm 
Offline

Joined: Sun Apr 22, 2012 8:23 pm
Posts: 36
This would be a cool thing to see in person. I'm a little skeptical how "perfectly" this really was shifting.

Using micro adjust doesn't change the fact that the derailleur will only move in 10 speed spacing increments. I would think that at some point on the 9 speed cassette the adjustment would have to be slightly off, even if adjusted to the best possible position.


Top
 Profile  
 
PostPosted: Thu May 16, 2013 1:16 pm 
Offline
Shop Owner

Joined: Sat Jun 13, 2009 4:02 am
Posts: 1980
Location: NoVA/DC
If his hanger was bent in slightly (unbeknownst to him), it would increase the horizontal movement of the derailleur per cog. That, and the floating upper pulley taking up a little slack, and the 10speed chain having more room between itself and the adjacent cog before making noise...


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 


Who is online

Users browsing this forum: akaricerocket, Baidu [Spider], Bing [Bot], MSNbot Media, normcorriveau, prototoast, Ritxis, srshaw, taylorpetie, thp and 42 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 Shifters 11 speed on 10 speed cassette?

in Road

Tomstr

4

825

Fri May 22, 2015 8:41 am

Tomstr View the latest post

There are no new unread posts for this topic. Shimano Ultegra CN-6800 11-speed chain discontinued?

in Road

Multebear

8

1275

Fri Jun 05, 2015 5:08 am

seanblurr View the latest post

There are no new unread posts for this topic. 11 speed cassette compatibility

[ Go to page: 1, 2 ]

in Road

clm2206

21

777

Sat Oct 03, 2015 4:35 am

novetan View the latest post

There are no new unread posts for this topic. 11 speed campagnolo and IRC 11-32 Cassette?

[ Go to page: 1, 2 ]

in Road

mrowkoob

16

1135

Fri Jul 31, 2015 6:24 pm

TheKaiser View the latest post

There are no new unread posts for this topic. Help on 9 speed cassette upgrade for easier climbing?

in Road

stockae92

12

266

Tue Oct 06, 2015 8:08 pm

Calnago View the latest post


It is currently Sat Feb 13, 2016 12:09 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