Comments on: Putting Cheaper Chainrings on XTR Cranks http://www.basquemtb.com/putting-cheaper-chainrings-on-xtr-cranks/ Mountain Biking Holidays in the Spanish Pyrenees and Basque Coast Thu, 02 Feb 2012 10:32:51 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: Ron Braidwoodhttp://www.basquemtb.com/putting-cheaper-chainrings-on-xtr-cranks/comment-page-1/#comment-1077 Ron Braidwood Fri, 02 Sep 2011 08:43:13 +0000 http://www.basquemtb.com/?p=1210#comment-1077 I am having difficulty finding the data that I need for a WikiBooks description on Road versus MTB shifting figures. My rear shifting data was not too bad to find, but I do not currently have a bike with chainrings to measure. Can you or any of your readers help with the following data or sources?1. Ideally I need to know the pitch of chainrings, say in a 3 x 7 system, or any other, for both a road and an MTB setup. 2. The other thing is, does anybody know the Shimano cable pulls for road and MTB front shifters? 3. Obviously, once these two are known, the shift ratios of Shimano's front derailleurs can be calculated, but in any case does anybody know the Shimano front derailleur shift ratios?Thanks, Ron, London. I am having difficulty finding the data that I need for a WikiBooks description on Road versus MTB shifting figures. My rear shifting data was not too bad to find, but I do not currently have a bike with chainrings to measure. Can you or any of your readers help with the following data or sources?

1. Ideally I need to know the pitch of chainrings, say in a 3 x 7 system, or any other, for both a road and an MTB setup.
2. The other thing is, does anybody know the Shimano cable pulls for road and MTB front shifters?
3. Obviously, once these two are known, the shift ratios of Shimano’s front derailleurs can be calculated, but in any case does anybody know the Shimano front derailleur shift ratios?

Thanks, Ron, London.

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