Mech sizing
David Lund
Posts: 602
Im running two chainrings up front with an e13 bash guard, 9 speed cassette at the back 11 - 34t.
Which shimano mech size so i want?
Extra Long?
Long?
Medium?
Why do they have to be different to other brands :evil:
Cheers in advance
David
Which shimano mech size so i want?
Extra Long?
Long?
Medium?
Why do they have to be different to other brands :evil:
Cheers in advance
David
0
Comments
-
You need to find out the capacity of the mech, and compare it to your set up.
You need:
34-11 plus the difference in teeth of the rings.0 -
Right youve confused me even more! lol
I always asumed that medium was simply for 2 rings and large was for 3.
David0 -
Usually, but can't hurt to check! Mechs have a capacity stated in teeth. The capacity you require is calculated from what i said above.0
-
Thanks supersonic, i checked the XTR mech im looking at and it said fits 11-34 so i assume thats correct as my cassette is 11-34.
Cheers
David0 -
They also have a high and low cassette teeth rating which is not capacity - capacity is the abilty to take up chain slack in all gear combos.
The RD-M971-GS has a capcity of 33t
The RD-M971-SGS has a capacity of 43 teeth.
You would probably be ok with the former.0 -
Ah i see thanks very much!0
