Quick Question
06-05-10 | 05:29 PM
#4
Plays in traffic
Joined: May 2006
Posts: 6,971
Likes: 15
From: Rochester, NY
Bikes: 1996 Litespeed Classic, 2006 Trek Portland, 2013 Ribble Winter/Audax, 2016 Giant Talon 4
Actually, it's a bit of each. Road crankset, MTB cassette. A road cassette for that would be a 12-28.
06-05-10 | 11:06 PM
#6
Senior Member
Joined: Nov 2004
Posts: 3,959
Likes: 4
From: Davis CA
Bikes: Surly Cross-Check, '85 Giant road bike (unrecogizable fixed-gear conversion
Yes. At most, you might need to shorten the chain a link or two. My guess is that the bike setup is not stock and it already has a road derailleur and running it with an mtb cassette is sort of iffy.
06-06-10 | 06:26 AM
#7
Senior Moment
Joined: Sep 2008
Posts: 1,004
Likes: 0
From: Atlanta, GA
Bikes: Fuji Absolute 4.0
so?
if you use Sheldon Browns gear analysis site.... figure out what _you_ want to do with the bike... does it matter whether it's gearing is road or mtb? the gear spread on that combination is pretty wide. you could do either road or mtb with it and still have gears to spare I would think.
IANAE on either I just commute.
if you use Sheldon Browns gear analysis site.... figure out what _you_ want to do with the bike... does it matter whether it's gearing is road or mtb? the gear spread on that combination is pretty wide. you could do either road or mtb with it and still have gears to spare I would think.
IANAE on either I just commute.
06-06-10 | 08:43 AM
#8
Plays in traffic
Joined: May 2006
Posts: 6,971
Likes: 15
From: Rochester, NY
Bikes: 1996 Litespeed Classic, 2006 Trek Portland, 2013 Ribble Winter/Audax, 2016 Giant Talon 4
Only to the extent that the RD can take up the chain slack when running in the granny ring, or that the RD can physically clear the big cog.
If the bike has an MTB RD, no problem at all running MTB cassettes--or road cassettes for that matter. Shimano 8-speed (and most 9-speed) is mix-and-match (within the speeds) so it's no problem running STI shifters with MTB RDs. Touring riders do it all the time.
If it has a road RD, when running in the granny ring it may not be able to keep the chain tight beyond about the middle of the cassette (say, the 15-tooth cog) because of the extra chain length required to fit around the big cog. At the other end, if it physically doesn't clear the big cog, the B screw may provide adequate adjustment.
If the bike has an MTB RD, no problem at all running MTB cassettes--or road cassettes for that matter. Shimano 8-speed (and most 9-speed) is mix-and-match (within the speeds) so it's no problem running STI shifters with MTB RDs. Touring riders do it all the time.
If it has a road RD, when running in the granny ring it may not be able to keep the chain tight beyond about the middle of the cassette (say, the 15-tooth cog) because of the extra chain length required to fit around the big cog. At the other end, if it physically doesn't clear the big cog, the B screw may provide adequate adjustment.
