Rear derailleur tot...
 

MegaSack DRAW - 6pm Christmas Eve - LIVE on our YouTube Channel

[Closed] Rear derailleur total capacity

4 Posts
3 Users
0 Reactions
181 Views
Posts: 6886
Free Member
Topic starter
 

what does this refer to as it doesn't match big ring front big ring back. cheers


 
Posted : 09/09/2009 1:03 pm
Posts: 8866
Free Member
 

Total capacity is worked out by adding the difference between big and small chainring to the difference between big and small cassette sprocket.

(44-22)+(32-11)=43


 
Posted : 09/09/2009 1:11 pm
Posts: 6332
Free Member
 

it's basically the difference between the big-big gear and the small-small gear (although there are other ways of phrasing but the answers are exactly the same)

eg. (on a roadie)

big-big could be 53 and 25

small-small 39 and 12

difference is (53+25) - (39+12) = 78 - 51 = 27

obviously longer cage mechs have a bigger capacity


 
Posted : 09/09/2009 1:13 pm
Posts: 6332
Free Member
 

Mister P has described the other way of phrasing it 8)

but they get the same answer


 
Posted : 09/09/2009 1:15 pm
Posts: 6886
Free Member
Topic starter
 

thanks people


 
Posted : 09/09/2009 1:33 pm