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

Changing from triple crankset to double

Search
Notices
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.

Changing from triple crankset to double

Thread Tools
 
Search this Thread
 
Old 08-16-15 | 02:42 PM
  #26  
Drew Eckhardt's Avatar
Senior Member
 
Joined: Apr 2010
Posts: 6,341
Likes: 326
From: Mountain View, CA USA and Golden, CO USA

Bikes: 97 Litespeed, 50-39-30x13-26 10 cogs, Campagnolo Ultrashift, retroreflective rims on SON28/PowerTap hubs

Originally Posted by HillRider
Spread sheets are interesting but don't reflect how you really shift. First the 11x34 and 50x32 gears are crosschained and should be avoided. Second, when you make the change from the 50 to the 34T chainring are you really going to make 5 upshifts at the same time?
I did when riding 50-34x13-14-15-16-17-18-19-21-23 9 cogs going from 50x21 to 34x15, although I used Campagnolo levers which did that with one thumb button actuation. Going back it took two right lever wiggles to up shift from 34x14 to 50x19.

The frequent front shifting was still a huge hassle and taught me that the 50-34 compact crank is a bad idea spawned by marketing departments to eliminate the SKUs associated with triple cranks.

53-39x13-25/26 10 cogs is a good combination although as a lighter rider where 3.5W/kg is only 220W total with a fast spin I prefer a 50 big ring for a better chain line on flat ground over the larger gear I don't need. 46-36x12-25 11 cogs would be fine too. I think people who need more range like when I had 40-60 pounds of middle age spread are better off with triple cranks.

Last edited by Drew Eckhardt; 08-17-15 at 08:41 AM.
Drew Eckhardt is offline  
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Greiselman
Bicycle Mechanics
5
07-25-18 05:23 PM
jlax2485
Classic & Vintage
22
08-29-15 10:15 AM
xqwisit
Road Cycling
3
08-17-10 12:00 PM
canobeano
Bicycle Mechanics
6
05-13-10 02:17 AM
trail-rider
Bicycle Mechanics
22
12-28-09 01:01 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



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

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.