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Old 09-28-08, 01:09 PM   #1
Jerry in So IL
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How big of a gap....

...can I have between gears on the cassete? I mean, what is the biggest range of gears can I have from gear to gear?

I'm wanting to build up a three speed. I was thinking of having a hill gear, everyday gear, and "speed racer" gear. I know they are going to be a pretty good jump from the hill gear to bat out of hell gear. I just was wondering how much is too much?

Jerry
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Old 09-28-08, 02:22 PM   #2
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Kind of depends on what quality level of a shift you want. You can shift like a truck with wide gaps, or more like a sports car with closer gaps.
Some of the Mega range FW's have a 34 to 24 change. I've never used one, but I would think you wouldn't be doing "speed shifts" with one.
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Old 09-28-08, 05:50 PM   #3
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Thanks Bill.

I might just make it a 3 speed "fixie", like what Mr Brown talked about in his fixed gear article. I'm thinking I can deal with the everyday gear for awhile, but I might go a few miles and have to hit some big hills for any time, then I want a lower gear.

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Old 09-28-08, 06:25 PM   #4
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Quote:
Originally Posted by Jerry in So IL View Post
Thanks Bill.

I might just make it a 3 speed "fixie", like what Mr Brown talked about in his fixed gear article. I'm thinking I can deal with the everyday gear for awhile, but I might go a few miles and have to hit some big hills for any time, then I want a lower gear.

Jerry
A Flip-Flop hub with two different size cogs can be used on a fixie or single speed but you can't have too big a tooth difference or the dropout wheel position adjustment won't be enough to make the chain the right tension in one or the other.

If you are willing to accept sluggish shifting a 3-speed cassette of say 13, 17, 25 cogs should do the trick but will require a rear derailleur and would work better (read require) with friction shifters.
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Old 09-28-08, 07:10 PM   #5
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Originally Posted by Bill Kapaun View Post
Kind of depends on what quality level of a shift you want. You can shift like a truck with wide gaps, or more like a sports car with closer gaps.
Some of the Mega range FW's have a 34 to 24 change. I've never used one, but I would think you wouldn't be doing "speed shifts" with one.
I ride a bike with a seven-speed 13X32 freewheel. The sixth cog is 24, so it's an 8 tooth jump. It's no big deal at all to shift it, but I've got a suntour derailleur that was designed for that sort of shift range, and a friction shifter. the shift is surprisingly quick, but the jump in range is enough to make me wonder if the chain has jumped off. (But when I'm using that gear, I really need it.)
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Old 09-29-08, 11:34 AM   #6
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Thanks, I think I will go with that.

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