Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

Chain wrap/ Ultegra RD 6600 question

Notices
Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

Chain wrap/ Ultegra RD 6600 question

Old 08-12-20, 04:52 PM
  #1  
davei1980
Very Slow Rider
Thread Starter
 
davei1980's Avatar
 
Join Date: Jul 2017
Location: E Wa
Posts: 1,206

Bikes: Jones Plus LWB, 1983 Centurion Japanese CrMo bike

Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 474 Post(s)
Liked 120 Times in 93 Posts
Chain wrap/ Ultegra RD 6600 question

I have an older long-cage Ultegra RD-6600 I want to use on a parts bin beater bike I am building. I have two cassettes I can use, the one I prefer is the 11-36t Deore 10 speed. I'll be using a 34 or 39t chainring, single up front.

Shimano literature says the max cog is 27 with a max total cap of 37. I know they err on the cautious side, but can I run a 36t max cog on a 1x setup? I don't know what total capacity is, is that chain wrap? If so, what does that mean and how do I calculate?

https://lynchjim.com/Pdf/bike_shimano...ra_RD_6600.pdf

I also own an Ultegra 12-27t cassette I can run, I have actually used this cassette with this derailleur and it works well. Just looking to squeeze out a little extra range if I can.

Edit - the small shifts in the Ultegra cassette make it a joy to ride on the road so no worries if my big cassette won't work ;-)
davei1980 is offline  
Old 08-12-20, 05:16 PM
  #2  
shelbyfv
Banned.
 
Join Date: Jun 2007
Posts: 7,172
Mentioned: 28 Post(s)
Tagged: 0 Thread(s)
Quoted: 1810 Post(s)
Liked 1,182 Times in 672 Posts
I don't think you have prayer of the 36T cassette working with the 6600 RD. As you say, that is 9 teeth over the max cog. Chain wrap does not factor in this.
shelbyfv is offline  
Likes For shelbyfv:
Old 08-12-20, 05:25 PM
  #3  
davei1980
Very Slow Rider
Thread Starter
 
davei1980's Avatar
 
Join Date: Jul 2017
Location: E Wa
Posts: 1,206

Bikes: Jones Plus LWB, 1983 Centurion Japanese CrMo bike

Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 474 Post(s)
Liked 120 Times in 93 Posts
Originally Posted by shelbyfv View Post
I don't think you have prayer of the 36T cassette working with the 6600 RD. As you say, that is 9 teeth over the max cog. Chain wrap does not factor in this.
Sometimes it's just that simple! lol
davei1980 is offline  
Likes For davei1980:
Old 08-12-20, 05:26 PM
  #4  
dsbrantjr
Senior Member
 
dsbrantjr's Avatar
 
Join Date: Sep 2010
Location: Roswell, GA
Posts: 7,560

Bikes: '93 Trek 750, '92 Schwinn Crisscross, '93 Mongoose Alta

Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 1155 Post(s)
Liked 541 Times in 392 Posts
Originally Posted by shelbyfv View Post
I don't think you have prayer of the 36T cassette working with the 6600 RD. As you say, that is 9 teeth over the max cog. Chain wrap does not factor in this.
+1 Max cog and chain wrap are totally separate specifications; staying within one does not allow you to grossly violate the other.
dsbrantjr is offline  
Likes For dsbrantjr:
Old 08-12-20, 09:00 PM
  #5  
bwilli88 
Senior Member
 
bwilli88's Avatar
 
Join Date: Jan 2013
Location: Kampong Cham, Cambodia but I have quite a few in Lancaster, PA
Posts: 2,327

Bikes: Bikes in USA; 73 Raleigh Supercourse dingle speed, 74 Raleigh Grand Prix SS, 78 Raleigh Supercourse, 83 Centurion Pro-Tour, 82 Raleigh RRA.

Mentioned: 50 Post(s)
Tagged: 0 Thread(s)
Quoted: 601 Post(s)
Liked 204 Times in 142 Posts
Here is a Ultegra long cage running an 11-36 cassette.
bwilli88 is offline  
Old 08-12-20, 09:01 PM
  #6  
davei1980
Very Slow Rider
Thread Starter
 
davei1980's Avatar
 
Join Date: Jul 2017
Location: E Wa
Posts: 1,206

Bikes: Jones Plus LWB, 1983 Centurion Japanese CrMo bike

Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 474 Post(s)
Liked 120 Times in 93 Posts
Originally Posted by dsbrantjr View Post
+1 Max cog and chain wrap are totally separate specifications; staying within one does not allow you to grossly violate the other.
I honestly had no idea.
davei1980 is offline  
Old 08-12-20, 10:35 PM
  #7  
davei1980
Very Slow Rider
Thread Starter
 
davei1980's Avatar
 
Join Date: Jul 2017
Location: E Wa
Posts: 1,206

Bikes: Jones Plus LWB, 1983 Centurion Japanese CrMo bike

Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 474 Post(s)
Liked 120 Times in 93 Posts
Originally Posted by bwilli88 View Post
Here is a Ultegra long cage running an 11-36 cassette.
No way! that's my derailleur!

When sizing the chain, did you deviate from the "largest cog/largest chainwheel combo + 2 full links" edict?

Also, if that's a BK cassette (Deore) that's my cassette also!
davei1980 is offline  
Old 08-13-20, 05:38 AM
  #8  
shelbyfv
Banned.
 
Join Date: Jun 2007
Posts: 7,172
Mentioned: 28 Post(s)
Tagged: 0 Thread(s)
Quoted: 1810 Post(s)
Liked 1,182 Times in 672 Posts
That pic does not show the chain on the 36 cog, don't get too excited Edit- I see a pic in another thread where he has a similar 105 with the chain on the big cog so apparently it is possible!

Last edited by shelbyfv; 08-13-20 at 06:24 AM.
shelbyfv is offline  
Likes For shelbyfv:
Old 08-13-20, 09:00 AM
  #9  
davei1980
Very Slow Rider
Thread Starter
 
davei1980's Avatar
 
Join Date: Jul 2017
Location: E Wa
Posts: 1,206

Bikes: Jones Plus LWB, 1983 Centurion Japanese CrMo bike

Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 474 Post(s)
Liked 120 Times in 93 Posts
Originally Posted by shelbyfv View Post
That pic does not show the chain on the 36 cog, don't get too excited Edit- I see a pic in another thread where he has a similar 105 with the chain on the big cog so apparently it is possible!
good point though
davei1980 is offline  
Old 08-15-20, 07:39 AM
  #10  
bwilli88 
Senior Member
 
bwilli88's Avatar
 
Join Date: Jan 2013
Location: Kampong Cham, Cambodia but I have quite a few in Lancaster, PA
Posts: 2,327

Bikes: Bikes in USA; 73 Raleigh Supercourse dingle speed, 74 Raleigh Grand Prix SS, 78 Raleigh Supercourse, 83 Centurion Pro-Tour, 82 Raleigh RRA.

Mentioned: 50 Post(s)
Tagged: 0 Thread(s)
Quoted: 601 Post(s)
Liked 204 Times in 142 Posts
Originally Posted by davei1980 View Post
No way! that's my derailleur!

When sizing the chain, did you deviate from the "largest cog/largest chainwheel combo + 2 full links" edict?

Also, if that's a BK cassette (Deore) that's my cassette also!
No, it is an XT I think.
And while I do not have the chain on the 36 it does work well. I used the Big Big +2 for chain length.
I also have run this with 3 105 GS Rear Derailleurs. I have GS derailleurs on 2 Centurion Pro-Tours(5700) and a Fuji Stratos(6700) running a 11x36 cassette and a 105 5500 on a 12x36 9 speed.

Last edited by bwilli88; 08-15-20 at 08:19 AM.
bwilli88 is offline  
Old 08-15-20, 10:16 AM
  #11  
70sSanO
Senior Member
 
70sSanO's Avatar
 
Join Date: Feb 2015
Location: Mission Viejo
Posts: 2,233

Bikes: 1986 Cannondale SR400 (Flat bar commuter), 1988 Cannondale Criterium XTR, 1992 Serotta T-Max, 1995 Trek 970

Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 491 Post(s)
Liked 220 Times in 164 Posts
It all comes down to the hanger on the bike. The Wolf Tooth Road Link works by merely dropping derailleur down to accommodate the larger cog.

If you frame was designed for larger cogs, like a touring bike, with a hanger that already positions the derailleur lower, you have a better chance. If your frame was designed to optimize a narrow range cassette, it may not work so well.

John
70sSanO is offline  
Likes For 70sSanO:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.