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Crank Question...

DHS

Friendly Neighborhood Pool Boy
Apr 23, 2002
5,094
0
Sand, CA
only if its the 110 5 bolt one. the 4bolt, i've looked, you can't find a shift pin ring that is bigger then 34....
 

DßR

They saw my bloomers
Feb 17, 2004
980
0
the DC
DHS said:
only if its the 110 5 bolt one. the 4bolt, i've looked, you can't find a shift pin ring that is bigger then 34....
Blackspire and Vuelta both make 4/104 36t ramped rings. The Vuelta one didn't last terribly long for me, but shifted great. I've also used an un-ramped 36t Blackspire and it shifted acceptably well. I don't think anybody uses pins except Shimano.
 

DßR

They saw my bloomers
Feb 17, 2004
980
0
the DC
sometimes, chainrings have all kinds of grooves and pins in them to help with shifting -- it gives the chain something to grab onto so it can slide more easily from the 22t to the 36t chainring. Those are called "ramps" or "pins" -- pins are just that, pins, and ramps are any of a variety of shapes carved into the back of the chainring to help w/ shifting.

A chainring without any ramps or pins won't shift as quickly or smoothly as one that has them. There aren't too many people making 36t rings in 4-bolt pattern with ramps, but you can find them in a 5-bolt pattern (which is of no use to you) easily, is all DHS was saying.
 

DH biker

Turbo Monkey
Dec 12, 2004
1,185
0
North East
Okay I think I get it now.
Any links to where I can get a crank like that with two rings and a bash (including a BB). Thanks for your help!
 

Zark

Hey little girl, do you want some candy?
Oct 18, 2001
6,254
7
Reno 911
Shimano does make a 36 tooth Deore ring in a 4x104 pattern. Pinned and ramped for your (shifting) pleasure;)