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Re: Re: compact cranks:should I
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jame-@verizon.net
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May 14, 2007 04:17 PDT
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I like the compact cranks. The only downside is downshifting the chainrings under a bit of pressure, e.g. on hills, in races or on very hard rides. The chain tends to derail in those circumstances, since the 16-tooth gap between the 50 and 34 is just a little too long for flawless shifting. This is easily remedied by a Deda Dog Fang or a Third Eye Chain Watcher, and Redline makes a nice one too but I can't recall the name. These plastic guides are $5-$10, fasten onto the downtube with a hose clamp (basically) and remedy the problem effectively, once you have them dialed in. I really like my compact cranks.
Jim McNeely
From: Mark Kerlin <flyth-@gmail.com>
Date: 2007/05/11 Fri AM 10:24:55 CDT
To: pnic-@mac.com
Cc: bron-@comcast.net, uscf-dis-@topica.com
Subject: Re: D20: compact cranks:should I
Nice for a commuting or cyclocross bike, easier on your knees if you climb lots of hills. Can be nice for criteriums with lots of slowdowns where you can tend to be overgeared in the big ring. Lots of people make 11-25 cassettes now...
Main cons are they put you in a smaller cog when you are going fast. Smaller cogs are less efficient, because the chain has less contact area. Also the chain/drivetrain will wear out faster because of the smaller front rings.
I have one on my cross/commuting bike and like it but run regular cranks on my race bike.
On 5/11/07, Peter Nicoll <pnic-@mac.com> wrote:Wow, this should be interesting.
I use the compacts and they make me happy. One wheelset, one
cassette, ride nearly anything.
On May 11, 2007, at 8:10 AM, jim bronson wrote:
| | I'd like to hear pros & cons of using compact cranks - especially from
those who use them.
thanks,
Jim
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