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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 01-16-07, 03:44 PM   #1
driven1
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inexpensive crank advice?

I currently have the stock touro crank that came on my mercier kilo. I immediately upgraded the wheelset to Iro and I've put about 4000 miles on it since I bought it 10 months ago. The crankset has a lot of flex to it, but I don't have much money right now. So if I do upgrade, I can't spend much. Would an inexpensive crankset such as a sugino rd or a crankset from bulletproof be that much better than the touro crankset I have now. Also, because of mileage, which will likely last longer? Thanks for the advice.
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Old 01-16-07, 03:44 PM   #2
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the frame probably has even more flex in it.
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Old 01-16-07, 03:51 PM   #3
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RD/Bulletproofs aren't upgrades. more like lateral moves, or even downgrades.
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Old 01-16-07, 04:47 PM   #4
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"inexpensive crank advice?" hell, here's some free advice about crank.

DON'T ****ING DO IT.




you're welcome.
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Old 01-16-07, 11:50 PM   #5
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save for new miche cranks you can get em for like 150 with a ring i think. great deal
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Old 01-17-07, 07:14 AM   #6
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Quote:
Originally Posted by dutret
the frame probably has even more flex in it.
Dutret is right. Most likely any flex you feel is from your frame, or maybe even your wheels. I'd rather learn to live with it than get a placebo cure for $150+.
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Old 01-17-07, 07:22 AM   #7
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Quote:
Originally Posted by Aeroplane
Dutret is right. Most likely any flex you feel is from your frame, or maybe even your wheels. I'd rather learn to live with it than get a placebo cure for $150+.
+9 dragons
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Old 01-17-07, 12:45 PM   #8
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is flex so bad? to me it sounds a lot like comfort.
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Old 01-17-07, 12:56 PM   #9
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less power, less speed.
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Old 01-17-07, 01:01 PM   #10
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+1 on frame flex. Probably right around your BB. Cheap cranks can be had on EBay for nothing. I have a Shimano 600 on my fixie with a Rocket Ring.
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Old 01-17-07, 08:59 PM   #11
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Is there anything wrong with using MTB-specific cranks for a road fixed? The only difference is that MTB cranks usually have 4 arms on the spider and road and track cranks have 5 arms. Does this mean MTB cranks are not as stiff in general?
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Old 01-17-07, 09:36 PM   #12
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Suginos are pretty good and low priced
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Old 01-17-07, 10:25 PM   #13
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What's the deal with 600s? Are they considered especially flexy? I have 600 170's on my bike and have never once thought "Jeez these cranks flex a lot".
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Old 01-18-07, 07:11 AM   #14
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Quote:
Originally Posted by kmart
Is there anything wrong with using MTB-specific cranks for a road fixed? The only difference is that MTB cranks usually have 4 arms on the spider and road and track cranks have 5 arms. Does this mean MTB cranks are not as stiff in general?
Some MTB cranks have 5 arms, but they are 94 BCD instead of the 4-arm 104 BCD. But the main reason they don't get used for track stuff (IMHO) is because they tend to be overbuilt. Mountain bikes get abused a lot more than track bikes, so the cranks have to be moderately stiff AND super-strong.

Also, the chainrings in those BCD's rarely go past 44 or 46t, so you'd need some tiny-ass cogs for them to be usable by the monsters with basketball-sized quads. It's also hard to find unramped chainrings in those BCDs too. Since my quads are normal-sized, I used some on a conversion for a while and they worked fine.
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Old 01-18-07, 04:18 PM   #15
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Quote:
Originally Posted by Aeroplane
Some MTB cranks have 5 arms, but they are 94 BCD instead of the 4-arm 104 BCD. But the main reason they don't get used for track stuff (IMHO) is because they tend to be overbuilt. Mountain bikes get abused a lot more than track bikes, so the cranks have to be moderately stiff AND super-strong.

Also, the chainrings in those BCD's rarely go past 44 or 46t, so you'd need some tiny-ass cogs for them to be usable by the monsters with basketball-sized quads. It's also hard to find unramped chainrings in those BCDs too. Since my quads are normal-sized, I used some on a conversion for a while and they worked fine.

im using a mountain bike triple on my single speed (an old sake crankset, but i also used a shimano). i think its 104 5 bolt, either way i have 46,48, and 52 rings that all fit it, no pins or ramps either. so they are out there.

123mm bb and using the back of the spider gives a perfect chainline.
it a little hokey but it works great.
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Old 01-19-07, 11:12 AM   #16
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My 600s are 172.5, otherwise known as "so long, the toe overlap is unbelievable", but I've never had any flex issues. But they sure were cheap! $20.
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