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  1. #1
    ogre
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    steamroller chainring clearance

    right now on my steamroller i've got 42:14. i want to go to a smaller ratio, but with bigger gears. the thing is, right now, my 42t up in front is REALLY close to the chainstay. it is on the inside of the spider, and i know i can put the new one (assuming i get a bigger chainring) on the outside of the spider to get more clearance Clarence, buuuut then my chainline would be all messed up.... would i need to adjust the hub in order to adjust the chainline's vector Victor?

    by the way i've got a surly hub in the back.

    so does anyone have a big chainring on a steamroller with a surly hub, and if so howsit done?

    roger Roger.

  2. #2
    cxmagazine dot com pitboss's Avatar
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    I run a 48 - I have a sugino 75 BB and crankset. No problems for me. See this thread:
    problems w/ sugino75 cranks on steamroller

    good info there for sure.
    Deathlap - cyclocross, training, beer,...escape hatch

  3. #3
    hello roadfix's Avatar
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    I've got a 46 ring on my steamroller, but on a track crankset.
    You can mount your new bigger ring on the inside using a longer BB spindle or on the outside with a shorter BB spindle....either way should give you a close enough chainline.
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  4. #4
    ogre
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    Quote Originally Posted by The Fixer
    I've got a 46 ring on my steamroller, but on a track crankset.
    You can mount your new bigger ring on the inside using a longer BB spindle or on the outside with a shorter BB spindle....either way should give you a close enough chainline.
    it's not the crank clearance or the spindle length that's the issue. the issue is the chainline. if i move my chainring outboard of the spider, the chainline will be wiggidy-whack

  5. #5
    Cornucopia of Awesomeness baxtefer's Avatar
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    do you have a new steamroller, or one of the old boston baked bean brown ones.

    The new gray/charcoal steamrollers with the shaped chainstays are supposed to have clearance for a 50T ring while maintaining chainline.

  6. #6
    Banned.
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    Quote Originally Posted by drolldurham
    right now on my steamroller i've got 42:14. i want to go to a smaller ratio, but with bigger gears.
    I don't get it. Why bigger gears? You are just complicating things here.

    You want an easier to pedal gear? Then increase rear cog size and/or decrease chain ring size.
    You want a harder to pedal gear? Reduce the rear cog size and/or chainring size.

    You should be able to make most gear changes by jsut swapping out rear cogs, unless you REALLY want to fine tune your gearing to within +/- 1 gear inch.
    Last edited by BostonFixed; 04-05-05 at 09:44 PM.

  7. #7
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    I'm runnung 38/14. Had the stuff lying around. Its been working well.

  8. #8
    ogre
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    Quote Originally Posted by BostonFixed
    I don't get it. Why bigger gears? You are just complicating things here.

    You want an easier to pedal gear? Then increase rear cog size and/or decrease chain ring size.
    You want a harder to pedal gear? Reduce the rear cog size and/or chainring size.

    You should be able to make most gear changes by jsut swapping out rear cogs, unless you REALLY want to fine tune your gearing to within +/- 1 gear inch.
    yeah yeah i know, i'm just eating up all the stuff i hear about bigger drivetrains causing less wear, looking cool and "feeling good"

  9. #9
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    Quote Originally Posted by drolldurham
    yeah yeah i know, i'm just eating up all the stuff i hear about bigger drivetrains causing less wear, looking cool and "feeling good"
    The wear issue is a VERY minimal factor; it's not like your drivetrain is goind to last 2x longer with bigger rings/cogs...
    As for the looking cool part; that's BS. Carry a pie in one hand and you will look cool no matter you ring/cog size.
    The feeling good part is also minimal; there's not too much of a difference in feel.

    This just seems pointless to me; as bigger rings and cogs just cost more money....

  10. #10
    hello roadfix's Avatar
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    Quote Originally Posted by drolldurham
    if i move my chainring outboard of the spider, the chainline will be wiggidy-whack
    That's where you could use a shorter BB... but not too short where your cranks come awfully close to the chainstays.
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  11. #11
    troglodyte ryan_c's Avatar
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    I've got a 49T on a baked bean steamroller (supposedly less clearance!) w/ no problems.

  12. #12
    Happy Cycling HexagonSun's Avatar
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    i have a 48T on a baked beaner

  13. #13
    The Alternative Dressing
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    Quote Originally Posted by The Fixer
    That's where you could use a shorter BB... but not too short where your cranks come awfully close to the chainstays.
    If there is no clearance for the chainring, it doesn't matter.

  14. #14
    Senior Member jordache's Avatar
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    Quote Originally Posted by baxtefer
    The new gray/charcoal steamrollers with the shaped chainstays are supposed to have clearance for a 50T ring while maintaining chainline.
    Yeah, I run a 50.

  15. #15
    hello roadfix's Avatar
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    Quote Originally Posted by Miracle Whip
    If there is no clearance for the chainring, it doesn't matter.
    Hmmm.....I see plenty more room. Maybe I'm missing something here.... Perhaps my Campy track hub's chainline is further out compared to the Surly hub's...?
    Last edited by roadfix; 04-06-05 at 10:33 AM.
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  16. #16
    F*** Corporate Beer daveIT's Avatar
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    Quote Originally Posted by BostonFixed
    Carry a pie in one hand and you will look cool no matter you ring/cog size.
    Thanks, man. Almost shot beer out of my nose.

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