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

Should I get a long cage or short cage rear der?

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.

Should I get a long cage or short cage rear der?

Old 03-01-05, 07:01 PM
  #1  
operator
cab horn
Thread Starter
 
Join Date: Jun 2004
Location: Toronto
Posts: 28,321

Bikes: 1987 Bianchi Campione

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 13 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I have a 11-28, 7 speed cassette in the rear and a double. How do I know if I should get a long cage or short cage rear der?

Last edited by operator; 03-01-05 at 07:53 PM.
operator is offline  
Old 03-01-05, 07:11 PM
  #2  
sydney
Senior Member
 
sydney's Avatar
 
Join Date: Jan 2004
Posts: 9,428
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by operator
I have a 12-28, 7 speed cassette in the rear and a double. How do I know if I should get a long cage or short cage rear der?
Depends on what the tooth spread on the double is. Short usually works,and if there is insufficient wrap capacity just stay out of the smallest cogs when in the small ring.
sydney is offline  
Old 03-01-05, 07:22 PM
  #3  
operator
cab horn
Thread Starter
 
Join Date: Jun 2004
Location: Toronto
Posts: 28,321

Bikes: 1987 Bianchi Campione

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 13 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
It's 11-13-15-18-21-24-28
operator is offline  
Old 03-01-05, 07:24 PM
  #4  
ggg300
Burnin' and Lootin'
 
ggg300's Avatar
 
Join Date: Dec 2004
Location: SoCA
Posts: 2,713
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
what ring size are you running? 53/39? 52/42? 52/39???

if is anything like that then a short will work fine...any say otherwise?
ggg300 is offline  
Old 03-01-05, 07:25 PM
  #5  
phantomcow2
la vache fantôme
 
phantomcow2's Avatar
 
Join Date: Aug 2004
Location: NH
Posts: 6,266
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I would say you can get away with a short.
phantomcow2 is offline  
Old 03-01-05, 07:33 PM
  #6  
sydney
Senior Member
 
sydney's Avatar
 
Join Date: Jan 2004
Posts: 9,428
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by operator
It's 11-13-15-18-21-24-28
Strange double crank.
sydney is offline  
Old 03-01-05, 07:51 PM
  #7  
operator
cab horn
Thread Starter
 
Join Date: Jun 2004
Location: Toronto
Posts: 28,321

Bikes: 1987 Bianchi Campione

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 13 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by sydney
Strange double crank.
ER lol. Hold on. I read spread on the cassette.

Ok. It's a 52-39. The guy at LBS said a long cage but I didn't really believe him and wanted to double check.
operator is offline  
Old 03-01-05, 07:56 PM
  #8  
CPcyclist
Senior Member
 
CPcyclist's Avatar
 
Join Date: Jul 2004
Location: Wisconsin
Posts: 1,647

Bikes: Lemond Arrivee, Felt F1 Road, Tomac Revolver(full), GT race (hardtail)

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Fine, I am looking at running a short for my 13-29cst with the 53/39 dbl I will just need to resist using the 53 with the 2-3 largest cogs as the RD gets a little horizontal.
CPcyclist is offline  
Old 03-01-05, 07:59 PM
  #9  
John E
feros ferio
 
John E's Avatar
 
Join Date: Jul 2000
Location: www.ci.encinitas.ca.us
Posts: 19,240

Bikes: 1959 Capo; 1980 Peugeot PKN-10; 1981 Bianchi; 1988 Schwinn KOM-10;

Mentioned: 28 Post(s)
Tagged: 0 Thread(s)
Quoted: 660 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
You really need a medium cage, but they have gotten pretty rare. I use a short cage with a similar total drop in front (48-45-34), but with a very derailleur-friendly 10-tooth spread in back (13-15-17-19-21-23). I used an older SunTour V-Luxe short-cager on a 52-44 / 14-16-18-21-24-28 rig, also with very good results.

The issues are both chain wrap and low cog clearance from the jockey wheel.
__________________
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324
Capo: 1960 Sieger, S/N 42624
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1981 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
John E is offline  
Old 03-01-05, 08:03 PM
  #10  
sydney
Senior Member
 
sydney's Avatar
 
Join Date: Jan 2004
Posts: 9,428
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by operator
ER lol. Hold on. I read spread on the cassette.

Ok. It's a 52-39. The guy at LBS said a long cage but I didn't really believe him and wanted to double check.
I'm asssuming this is a shimano RD and if so, it will handle it, since their spec is very conservative, and no issue with the 28 cog either. You don't use the smallest cog in the small ring anyway, as far as wrap is concerned. Current campy short cage likely wouldn't as the wrap exceeds it's spec by a good bit and it's not conservative.
sydney is offline  
Old 03-01-05, 08:04 PM
  #11  
sydney
Senior Member
 
sydney's Avatar
 
Join Date: Jan 2004
Posts: 9,428
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by John E
You really need a medium cage, but they have gotten pretty rare. I use a short cage with a similar total drop in front (48-45-34), but with a very derailleur-friendly 10-tooth spread in back (13-15-17-19-21-23). I used an older SunTour V-Luxe short-cager on a 52-44 / 14-16-18-21-24-28 rig, also with very good results.

The issues are both chain wrap and low cog clearance from the jockey wheel.
He doens't if he's using that Shimano stuff you have no use for. It'll handle the 28 too.
sydney is offline  
Old 03-01-05, 08:07 PM
  #12  
sydney
Senior Member
 
sydney's Avatar
 
Join Date: Jan 2004
Posts: 9,428
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by operator
The guy at LBS said a long cage but I didn't really believe him and wanted to double check.
Another nose picker.
sydney is offline  
Old 03-02-05, 08:49 AM
  #13  
Gonzo Bob
cycles per second
 
Gonzo Bob's Avatar
 
Join Date: Oct 2003
Location: Minnesota
Posts: 1,790

Bikes: Vitus Aluminum, DiamondBack Apex, Softride Powerwing 700, "Generic" Ishiwata 022, Trek OCLV 110

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
A short cage will probably work. I run 11-28 with 44/29 and use a Shimano 600 short cage rear derailer. There's less margin for error in setting the chain length when you are at (or slightly past) the spec'd limits of the rear derailer's capacity.
Gonzo Bob is offline  
Old 03-02-05, 09:54 AM
  #14  
ImprezaDrvr
Back in the Sooner State
 
Join Date: Aug 2002
Location: Norman, OK
Posts: 2,572
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I ran medium cage for a while with 53/39 and 13/29, but swapped the cage for a short cage out or curiosity and vanity. Works like a charm, I'm just more aware of my gearing in the big ring than I was before. If you've always been one to try to avoid big/big and small/small gearing, you're a bit ahead of the game, but you should be fine either way.
ImprezaDrvr is offline  
Old 08-12-05, 06:40 AM
  #15  
NZLcyclist
MaNiC!
 
NZLcyclist's Avatar
 
Join Date: Feb 2003
Location: Hamilton, New Zealand
Posts: 1,600

Bikes: 2004 Cervelo Soloist 105, 2005 Apollo Apex, 2006 SCOTT Speedster S30

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
time to redig this thread up!

I am running a 39/32 combo up front and have a short cage 105 rear deraileur with a 12-25 9 speed cassette.

However I have an event in October where I need seriously low gearing (2300m/7,500ft of climbing) and am wanting to put my mountainbike cassette on. It's a HG50 Deore 9 speed 11-32T cassette - will I need to get at least a medium cage deraileur? or get a long cage? I have only seen "triple" and "double" deraileurs - are these short and long?

Thanks

Brendon
NZLcyclist is offline  
Old 08-12-05, 07:13 AM
  #16  
sydney
Senior Member
 
sydney's Avatar
 
Join Date: Jan 2004
Posts: 9,428
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by NZLcyclist
time to redig this thread up!

I am running a 39/32 combo up front and have a short cage 105 rear deraileur with a 12-25 9 speed cassette.

However I have an event in October where I need seriously low gearing (2300m/7,500ft of climbing) and am wanting to put my mountainbike cassette on. It's a HG50 Deore 9 speed 11-32T cassette - will I need to get at least a medium cage deraileur? or get a long cage? I have only seen "triple" and "double" deraileurs - are these short and long?

Thanks

Brendon
Even with the 11x32 the issue isn't wrap or cage length with that 39/32 up front. Your 105 has enough wrap,but likely won't shift a 32 cog. You got it so try it with the B screw all the way in. If it doesn't work get an inexpensive maga range MTB RD that will handle a 34 cog.
sydney is offline  
Old 08-12-05, 07:46 AM
  #17  
rmfnla
Senior Member
 
rmfnla's Avatar
 
Join Date: May 2005
Location: La La Land (We love it!)
Posts: 6,330

Bikes: Gilmour road, Curtlo road; both steel (of course)

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 267 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Or, add an 8-speed 30-T cog to a road cassette; your existing derailleur will work and all you will need is a few more chain links (probably only 1 or 2).

I put a 30-T onto an 11-27 Ultegra by removing the 14-T. The 30-T goes onto the hub first, then the spacer from the 14, followed by the rest of the cassette as usual. Works perfectly, looks great, and I've never missed the 14-T.

This is one of the ways Harris makes up custom cassettes; in fact, you can buy the cog from them at

http://harriscyclery.net/site/itemde...=39&sort=Price

I pulled mine off an unused 8-speed HG cassette I picked up on eBay for cheap, but either way works.
__________________
Today, I believe my jurisdiction ends here...

Last edited by rmfnla; 08-14-05 at 09:45 AM.
rmfnla is offline  

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

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