Bicycle Mechanics - Chainring question?
Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.
12-04-05, 07:44 PM
I have a recumbent with a 110/74 BCD crankset. The chainrings are 46/36/24. I tour and tow a Nomad trailer with it and wonder if there is any way to lower the 24 to a 22 on this crankset. If not I will purchase a mountain crankset but I like the current crankset that is on the bent. Thank you in advance. Rich
12-04-05, 07:50 PM
I think you should be able to get a 22 for the 74 bcd (although i'm not absolutely sure without checking supplier catalogs). What about getting a cassette with a lower gear - what cassette gearing do you have?
According to Sheldon/Harris Cyclery's chainring page, 24 is as low as you can go. http://sheldonbrown.com/harris/chainrings.html
Don't know if there are any exceptions to this, but it looks like you'll have to get a mountain crankset in order to go lower.
EDIT: Don't forget to check thoroughly, first! I don't know if 24 is listed as smallest because of a physical size limitation, or just a matter of supply and demand.
12-04-05, 08:00 PM
24T is a small as you can fit on a 74 mm bolt circle crank. If you want a 20T or 22T you have to go to a MTB crank.
BTW, what is your cassette range? Can you go lower there which would be a lot cheaper then a new crank?
12-04-05, 08:25 PM
I have an 11-34 cassette so I can't go any lower there. I guess the Mountain crank is the way I will go. Thanks
Powered by vBulletin® Version 4.1.12 Copyright © 2013 vBulletin Solutions, Inc. All rights reserved.