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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 05-21-08, 03:58 PM   #1
scooterist136
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Crankset Changes

Hello,

This is my first post. Please forgive my ignorance. I just got a bike and had a hard crash on Saturday because of a pedal strike caused by leaning to far in a corner. My current crank set is a FSA Vero, 130BCD, 172.5mm. I am considering changing to a Sugino RD Crankset, 130BCD, 165mm so I won't pedal strike going around corners. Here are my questions...

Will I need to change my bottom bracket when I go to a Sugino RD crankset? The current BB is 68 X 107mm and the Sugino RD crankset keeps refering to a 68 X 103mm. Sugino makes a BB that is 68 X 103mm.

Another question: Will this affect my chainline? My current chainline is 43.5mm but the Sugino RD information says to use a 68 X 103mm for a 45mm chainline.

I'm pretty confused. I basically want to change my crankset but not my bottom bracket. Can I do this?
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Old 05-23-08, 10:29 AM   #2
scooterist136
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Anyone?
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Old 05-23-08, 10:33 AM   #3
peabodypride
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You'd be moving the chainline 5 cm if you didn't get a new bottom bracket. I'd personally just buy the RDs and a generic Shimano 103mm BB for $20. Then sell the whole Vero kit on craigslist or something.
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Old 05-23-08, 10:33 AM   #4
Gyeswho
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bb length needs to match what is specified for that crank. if you change the cranks to sugino you'll need the 103mm bb
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Old 05-23-08, 10:49 AM   #5
huerro
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If you don't want to mess with your bb, another option would be to go with narrower or clipless pedals instead of changing your cranks.
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