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  1. #1
    Newbie
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    Newbie Crank Question

    Just finished my 1st tour (albeit very light) a 4 day trip from Santa Barbara to San Diego and I am hooked. I purchased a Cannondale R400 circa mid 90s on craigslist that I tuned up and made some minor adjustments (chain, pedals etc). It is equipped with a very solid Shimano 600 6 speed, the front ring is a 52/43 and I put a 14/28 mtn freewheel on the back. The lack of low gears was not a huge issue, but noticeable on some of the climbs. I did not use my large crank once.

    My question is this, what is my least expensive option on improving my gear ratio given the components? I have been told that a compact crank might be the simplest, or can I upgrade to a triple without changing too much.

  2. #2
    Senior Member
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    Apr 2008
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    Cervelo RS, Specialized Stumpjumper FSR Pro, Schwinn Typhoon, Nashbar touring, custom steel MTB
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    Cheapest thing would be to swap the 43-tooth chainring for a 39-tooth ring, though it doesn't change the gearing all that much.

    Compact cranks are a semi-recent invention. Most new ones are designed to work with 9- or 10-speed drivetrains. Dunno what happens if you try to mix a 10-speed compact crank with an older 6-speed drivetrain. Might work, as long as the chain isn't too wide and the chainline is similar.

    Switching to a triple would require a new shifter (if your bike has indexed front shifting), new front derailleur, and the new crank. You might also need a new bottom bracket, shift cable, and chain.

  3. #3
    17yrold in 64yrold body
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    I think sstorkel is right about the 39t chainring. You could also check out a 14-32 or 14-34 freewheel. Your rear derailleur might need to be replaced for a 14-34, but might work with a 14-32. I do not know all the 6spd freewheel combinations, but you might find a 14-30 that should work with you present rear der.

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