SRAM APEX cassette (11-32) w/ Dura Ace 7800 RD?
07-12-10, 07:53 AM
#1
Member
Thread Starter
Join Date: Nov 2009
Location: Grands Rapids, MI
Posts: 36
Bikes: Early 90's Raleigh Grand Prix
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
SRAM APEX cassette (11-32) w/ Dura Ace 7800 RD?
Does anyone know if a Dura Ace 7800 RD would work with the new SRAM APEX 11-32 cassette? I already have the DA RD. Thanks for your responses.
Mike
Mike
07-12-10, 09:29 AM
#2
Senior Member
Maybe but not likely. If you really want to use that cassette, buy it, try it, and if it doesn't work then buy a new rear derailler.
07-12-10, 09:51 AM
#3
SkreaminQuadz
Join Date: Aug 2005
Location: Falls Church, VA
Posts: 133
Bikes: 2005 Cannondale Prophet 1000, 2006 Litespeed Teramo, 2007 Bianchi San Jose, 2007 Surly Cross Check
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
I agree, I don't think it will work. I was looking at the APEX as well and did some research for using it with my existing DA RD. Max tooth capacity on the DA RD is 28, based on the manual. However, I've heard of people using a 30 tooth rear cassette with the DA RD. Another option I considered was using a MTB RD which generally has a wider range, but then I got into the 9 speed issue...
07-12-10, 09:59 AM
#4
Senior Member
Any Shimano MTB rear derailler with work fine with a 10 speed cassette and will allow you to use a 32T rear cog. Shimano's rear deraillers have never been "speed" specific. There is no functional difference between an 8, 9, or 10 speed rear derailler other than finish.
07-12-10, 12:45 PM
#6
Senior Member
Join Date: Dec 2006
Location: So Cal
Posts: 2,678
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
The model 7800 good to 27t but 28t works a 32t cassette will require you to use a Long or at least a Med. cage RD.
__________________
It may not be fancy but it gets me were I need to go.
https://www.jtgraphics.net/cyclist_bicycles.htm
It may not be fancy but it gets me were I need to go.
https://www.jtgraphics.net/cyclist_bicycles.htm
07-12-10, 12:55 PM
#7
Senior Member
Join Date: Feb 2005
Location: Oklahoma
Posts: 9,438
Bikes: Trek 5500, Colnago C-50
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 7 Times
in
6 Posts
A long cage derailleur has the same cog size limitation as a short cage derailleur. There are no Shimano medium cage road derailleurs but any Shimano mountain type derailleur can handle up to a 34t big ring.
07-12-10, 05:38 PM
#8
Senior Member
Join Date: Sep 2004
Location: boston, ma
Posts: 2,896
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
i built up a few new bikes with the apex group. works well, long term durability will need to be tested. i believe the largest 2 cogs of the cassette are pinned to a alloy carrier. to the OP, you will need a shimano mtb type derailleur,
07-13-10, 06:56 AM
#9
SkreaminQuadz
Join Date: Aug 2005
Location: Falls Church, VA
Posts: 133
Bikes: 2005 Cannondale Prophet 1000, 2006 Litespeed Teramo, 2007 Bianchi San Jose, 2007 Surly Cross Check
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Any Shimano MTB rear derailler with work fine with a 10 speed cassette and will allow you to use a 32T rear cog. Shimano's rear deraillers have never been "speed" specific. There is no functional difference between an 8, 9, or 10 speed rear derailler other than finish.
07-13-10, 07:06 AM
#10
Senior Member
Thread
Thread Starter
Forum
Replies
Last Post
fthomas
Bicycle Mechanics
4
11-09-15 09:54 PM
kokopelli99
Bicycle Mechanics
4
02-07-12 11:29 AM
