Record rear mech max cassette question

Discuss light weight issues concerning road bikes & parts.
User avatar
Calnago
Posts: 6069
Joined: Sun Nov 07, 2010 9:14 pm

by Calnago

That's the whole point. Will it have enough capacity to be able to accommodate the 53/29 situation. We all know you should never find yourself in that combination but it's nice to know that if it did occur (forgetfulness, carelessness, etc) that it isn't going to rip your derailleur apart and break the hanger and end up destroying who knows what else in the process.
I have installed and ridden a drive chain combo that would not be recommended, but in order to accommodate certain situations temporarily I just used caution in the range that could have caused problems. But I would never run a combo that even allows the possibility of crossing the big ring with the big sprocket without enough capacity in both gain length and the derailleur.
The new 11speed derailleur has one cage than accommodate (providing chain length is correct) any combination of cassettes from 11/23 to 12/29 which is nice. The early generation 11speed derailleurs however require a slight modification and part swap to accommodate the 12/29. But the part is relatively cheap, like $15 or something.
But this thread is talking about 10speed capacity.
Colnago C64 - The Naked Build; Colnago C60 - PR99; Trek Koppenberg - Where Emonda and Domane Meet;
Unlinked Builds (searchable): Colnago C59 - 5 Years Later; Trek Emonda SL Campagnolo SR; Special Colnago EPQ

fdegrove
Tubbie Guru
Posts: 5858
Joined: Tue May 03, 2005 2:20 am
Location: Belgium

by fdegrove

Hi,

thisisatest wrote:The medium cage is specifically designed for the 29t cassette. Actually should not be used w a cassette smaller than 26t. Its capacity is fully capable of handling the full range with a double, unlike the short cage which is a bit of a crapshoot when running the 29t.


The Record 10S medium cage derrie should and will run any cassette from 29T down without a glitch running a standard 39/53 crank.

The long cage should take all available cogs. The main reason it isn't used much is that it is slightly slower in responding to gear changes and of course it is heavier and less stiff. Other than that it also requires a longer chain which once again adds weight.

Ciao, ;)
Being a snob is an expensive hobby.

thisisatest
Shop Owner
Posts: 1980
Joined: Sat Jun 13, 2009 4:02 am
Location: NoVA/DC

by thisisatest

fdegrove wrote:The Record 10S medium cage derrie should and will run any cassette from 29T down without a glitch running a standard 39/53 crank.

yup, it appears you are correct. i just reread an old campy catalog and it seems that, many moons ago, i misread what they were saying.

User avatar
stella-azzurra
Posts: 5072
Joined: Mon Jan 23, 2006 6:35 am
Location: New York

by stella-azzurra

Properly set up gears should be fine. I have never ripped a rear derailleur as a result with the big ring and the biggest rear cog. I have done this on 8 9 and 10 speed. I'm just stating my experience here. You do not need to do the same.
I never took drugs to improve my performance at any time. I will be willing to stick my finger into a polygraph test if anyone with big media pull wants to take issue. If you buy a signed poster now it will not be tarnished later. --Graeme Obree

User avatar
stella-azzurra
Posts: 5072
Joined: Mon Jan 23, 2006 6:35 am
Location: New York

by stella-azzurra

Durace but same concept on Wiggins bike

A 10 speed Shimano Dura Ace Di2 transmission with wide ratio cassette and longer cage rear mech for the mountains.

Image
I never took drugs to improve my performance at any time. I will be willing to stick my finger into a polygraph test if anyone with big media pull wants to take issue. If you buy a signed poster now it will not be tarnished later. --Graeme Obree

Post Reply
  • Similar Topics
    Replies
    Views
    Last post