Chain wrap/ Ultegra RD 6600 question
#1
Very Slow Rider
Thread Starter
Join Date: Jul 2017
Location: E Wa
Posts: 1,274
Bikes: Jones Plus LWB, 1983 Centurion Japanese CrMo bike
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 500 Post(s)
Liked 132 Times
in
101 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 ;-)
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 ;-)
#2
Expired Member
Join Date: Jun 2007
Location: TN
Posts: 11,507
Mentioned: 37 Post(s)
Tagged: 0 Thread(s)
Quoted: 3657 Post(s)
Liked 5,394 Times
in
2,739 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.
Likes For davei1980:
#4
Senior Member
Join Date: Sep 2010
Location: Roswell, GA
Posts: 8,319
Bikes: '93 Trek 750, '92 Schwinn Crisscross, '93 Mongoose Alta
Mentioned: 30 Post(s)
Tagged: 0 Thread(s)
Quoted: 1438 Post(s)
Liked 1,092 Times
in
723 Posts
+1 Max cog and chain wrap are totally separate specifications; staying within one does not allow you to grossly violate the other.
Likes For dsbrantjr:
#5
Not lost wanderer.
Join Date: Jan 2013
Location: Lititz, Pa
Posts: 3,323
Bikes: In USA; 73 Raleigh Super Course dingle speed, 72 Raleigh Gran Sport SS, 72 Geoffry Butler, 81 Centurion Pro-Tour, 74 Gugie Grandier Sportier
Mentioned: 72 Post(s)
Tagged: 0 Thread(s)
Quoted: 885 Post(s)
Liked 987 Times
in
519 Posts
Here is a Ultegra long cage running an 11-36 cassette.
#8
Expired Member
Join Date: Jun 2007
Location: TN
Posts: 11,507
Mentioned: 37 Post(s)
Tagged: 0 Thread(s)
Quoted: 3657 Post(s)
Liked 5,394 Times
in
2,739 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.
Likes For shelbyfv:
#10
Not lost wanderer.
Join Date: Jan 2013
Location: Lititz, Pa
Posts: 3,323
Bikes: In USA; 73 Raleigh Super Course dingle speed, 72 Raleigh Gran Sport SS, 72 Geoffry Butler, 81 Centurion Pro-Tour, 74 Gugie Grandier Sportier
Mentioned: 72 Post(s)
Tagged: 0 Thread(s)
Quoted: 885 Post(s)
Liked 987 Times
in
519 Posts
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.
#11
Senior Member
Join Date: Feb 2015
Location: Mission Viejo
Posts: 5,801
Bikes: 1986 Cannondale SR400 (Flat bar commuter), 1988 Cannondale Criterium XTR, 1992 Serotta T-Max, 1995 Trek 970
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 1943 Post(s)
Liked 2,164 Times
in
1,323 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
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
Likes For 70sSanO: