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

gearing suggestions (cassette and rear derailleur selection)

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.

gearing suggestions (cassette and rear derailleur selection)

Old 11-21-14, 10:52 PM
Junior Member
Thread Starter
Join Date: Nov 2014
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
gearing suggestions (cassette and rear derailleur selection)

im building my first bike and trying to find what may be best or what may work with what i currently have.

I am running a SRAM 46/36 crank and have entertained the idea of dropping to a single ring with the build, but am not married to it. I am building my Soma Double Cross toward cross racing, but I want the bike to be bomb proof as much as possible. I also want this bike to be able to survive an ultra endurance ride, so I want to make sure I have the right combo to last and suit my needs.

I bought a set of Gevenalle (formerly retroshift) 10spd shifters, so the question is...

Which rear derailleurs will work and which cassettes should I lean toward?

I know that the shifters will work with any shimano road 10spd derailleur, like 105, ultegra, etc. But what about the MTB rear derailleurs, like the XT 10spd? Is it possible to have my shifters work with this derailleur or does the dyna sys make this impossible (like SRAM to shimano gearing being incompatible)

If I am stuck with a road rear derailleur, which one do I go with, and which cassette would be best?

Sorry to ask so much but I have exhausted google and still feel a little lost.
BorrachoMatador is offline  
Old 11-22-14, 05:57 AM
Senior Member
Join Date: Jun 2010
Location: Pearland, Texas
Posts: 7,579

Bikes: Cannondale, Trek, Raleigh, Santana

Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 308 Post(s)
Liked 3 Times in 3 Posts
BorrachoMatador, Any non Dyna-Sys RD from a mountain group is compatible with a 10S Shimano road group's cable pull.

bradtx is offline  
Old 11-22-14, 08:32 AM
Senior Member
dsbrantjr's Avatar
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 1,091 Times in 722 Posts
Microshift make several MTB groups which might merit a look.

Microshift may have have supplied the shifter parts on your Retroshifts.
dsbrantjr is offline  
Old 11-22-14, 05:28 PM
Have bike, will travel
Barrettscv's Avatar
Join Date: Feb 2006
Location: Lake Geneva, WI
Posts: 12,392

Bikes: Ridley Helium SLX, Canyon Endurance SL, De Rosa Professional, Eddy Merckx Corsa Extra, Schwinn Paramount (1 painted, 1 chrome), Peugeot PX10, Serotta Nova X, Simoncini Cyclocross Special, Raleigh Roker, Pedal Force CG2 and CX2

Mentioned: 46 Post(s)
Tagged: 0 Thread(s)
Quoted: 910 Post(s)
Liked 287 Times in 158 Posts
You can use a wide range of Shimano rear derailleurs. To narrow the range, what is the largest cog you will use on the cassette? If you largest cog will be 28 teeth or less, you may use any recent Shimano 105, Ultegra, Tiagra. If you want to use a 30 tooth cog, stay with a long arm 105, Ultegra, Tiagra.
When I ride my bike I feel free and happy and strong. I'm liberated from the usual nonsense of day to day life. Solid, dependable, silent, my bike is my horse, my fighter jet, my island, my friend. Together we will conquer that hill and thereafter the world.

Last edited by Barrettscv; 11-22-14 at 05:32 PM.
Barrettscv is offline  
Old 11-22-14, 06:56 PM
Senior Member
Join Date: Aug 2005
Location: Pittsburgh, PA
Posts: 33,656

Bikes: '96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '20 Surly Midnight Special, All are 3x10. It is hilly around here!

Mentioned: 39 Post(s)
Tagged: 0 Thread(s)
Quoted: 2025 Post(s)
Likes: 0
Liked 1,091 Times in 737 Posts
Any former generation 9-speed era Shimanop MTB rear derailleurs will work fine with 10-speed road shifters. If you want to reliably use a 30T or more largest cog you will do well with one of these. And yes, the OEM shifters supplied on Retroshifts are indeed made by Microshift although you can use any of Shimano's downtube or barend levers also.
HillRider is offline  
Related Topics
Thread Starter
Last Post
Bicycle Mechanics
02-13-17 10:00 PM
Bicycle Mechanics
09-12-13 04:38 PM
Cyclocross and Gravelbiking (Recreational)
06-17-13 02:19 PM
Bicycle Mechanics
05-23-12 04:45 PM
Long Distance Competition/Ultracycling, Randonneuring and Endurance Cycling
11-07-10 04:41 PM

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.