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  1. #1
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    Which bottom bracket to get? - $30-$50 range

    Replacing my bottom bracket, a RPM BB 7420 - 68x103mm. Has about 4000 miles on it, should've lasted longer, but it's all grimey and crunchy.

    Looking at:

    Sugino CBB-103
    http://www.ride-this.com/index.php/s...ource=googleps

    RPM (supposedly the same as Sugino?)
    http://www.benscycle.net/index.php?m...5&currency=USD

    Origin8
    http://store.citygrounds.com/store/p...et-68x103-JIS/

    IRD (made by Tange)
    http://www.nationalbicycleco.com/ind...38947cec1083f3


    Anyone have any opinions?


    Thanks in advance.

  2. #2
    Bastard of Reality Scrodzilla's Avatar
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    I'd go for whichever one costs less, as they're all pretty much the same.

  3. #3
    Radac!
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    shimano is like 15 bucks?!?!?
    wtf. you act like your lance. buy the cheapest **** you can

  4. #4
    Bastard of Reality Scrodzilla's Avatar
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    Read the original post. Shimano doesn't make a 103.

  5. #5
    Radac!
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    cant buy shims? i used a shimano with a shim to get my visp chainline right

  6. #6
    Veteran Racer TejanoTrackie's Avatar
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    Also, Shimano uses a plastic adjustable (non-drive side) cup. The others are aluminum or steel.
    What, Me Worry? - Alfred E. Neuman

    Quote Originally Posted by Dcv View Post
    I'd like to think i have as much money as brains.

  7. #7
    Veteran Racer TejanoTrackie's Avatar
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    Quote Originally Posted by yokotas13 View Post
    cant buy shims? i used a shimano with a shim to get my visp chainline right
    That only works if you are trying to move the crankarm outboard, but not the other way, which is probably the case here.
    What, Me Worry? - Alfred E. Neuman

    Quote Originally Posted by Dcv View Post
    I'd like to think i have as much money as brains.

  8. #8
    Bastard of Reality Scrodzilla's Avatar
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    Quote Originally Posted by TejanoTrackie View Post
    Also, Shimano uses a plastic adjustable (non-drive side) cup. The others are aluminum or steel.
    Not all Shimano are plastic NDS...but most are.

  9. #9
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    Quote Originally Posted by Scrodzilla View Post
    I'd go for whichever one costs less, as they're all pretty much the same.
    hhmmm i like this. so if i have a BB on my bike now. should i just find a crankset -bb. that will fit the bb thats on my bike..save some cash,time and work...

  10. #10
    Veteran Racer TejanoTrackie's Avatar
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    Quote Originally Posted by Scrodzilla View Post
    Not all Shimano are plastic NDS...but most are.
    Yeah, but the under $20 el cheapo cartridge ones definitely are plastic. The other brands are between $20 and $25, so it's really being penny wise and pound foolish to buy one with a plastic NDS cup just to save a few pennies.
    What, Me Worry? - Alfred E. Neuman

    Quote Originally Posted by Dcv View Post
    I'd like to think i have as much money as brains.

  11. #11
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    thanks for the help

    hey all,

    thanks for the help/suggestions. This bike requires so little maintenance, and has been so good to me, i don't mind spending 30ish for a nicer BB.

    As for the crank arms, I'm re-using the same ones, just replacing the BB. Not trying to move them anywhere, which is why I'm getting the exact same size.

    So, I guess I'll go with the Sugino....or any of them.

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