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  1. #1
    Member protaghiro's Avatar
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    1/8" Chainring availability for crank arms

    Are 1/8" chainrings available for 130mm BCP cranks? Am I stuck using 144mm BCP?

    If I want to use 1/8" cogs and chainrings, what are my options for cranks? What do you all use?

  2. #2
    Team Beer Cynikal's Avatar
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    You can always run a 1/8 chain on a smaller chainring. Just not the other way around.
    I'm not one for fawning over bicycles, but I do believe that our bikes communicate with us, and what this bike is saying is, "You're an idiot." BikeSnobNYC

  3. #3
    Patrick Barber weed eater's Avatar
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    Harris sells Stronglight 1/8" in 130mm. Very french. Not cheap at $50 but i am realizing that is about par for a good chainring.
    http://sheldonbrown.com/harris/chainrings/130.html
    as you probably know, Harris (allegedly) has a wide selection of chainrings in most sizes.

    me, i just switched to 1/8" because of the increased availability of rings in 144bcd. (And cuz I needed to replace my cog and ring, so why not?) My bike came with a Sugino 75 crankset which I want to keep, but the ring is worn.

    I got an FSA 1/8" 47t ring. Looks tough as nails. Haven't installed it yet. and have a 17t Phil cog on order from my LBS. Will install all alongwith new chain when I build my new wheels.

  4. #4
    "Great One" 53-11_alltheway's Avatar
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    Quote Originally Posted by weed eater
    Harris sells Stronglight 1/8" in 130mm. Very french. Not cheap at $50 but i am realizing that is about par for a good chainring.
    http://sheldonbrown.com/harris/chainrings/130.html
    as you probably know, Harris (allegedly) has a wide selection of chainrings in most sizes.

    me, i just switched to 1/8" because of the increased availability of rings in 144bcd. (And cuz I needed to replace my cog and ring, so why not?) My bike came with a Sugino 75 crankset which I want to keep, but the ring is worn.

    I got an FSA 1/8" 47t ring. Looks tough as nails. Haven't installed it yet. and have a 17t Phil cog on order from my LBS. Will install all alongwith new chain when I build my new wheels.
    Sugino 75 comes with 1/8" rings right?
    "The Iron never lies to you. The Iron will always kick you the real deal. It never freaks out on me, never runs. Friends may come and go, but 200 pounds is always 200 pounds." -Henry Rollins

  5. #5
    Patrick Barber weed eater's Avatar
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    not mine...it was 3/32. it was used, on a used bike, so i doubt it was in its original configuration. However, the chainring does say "sugino 75" on it.

  6. #6
    Cornucopia of Awesomeness baxtefer's Avatar
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    Quote Originally Posted by 53-11_alltheway
    Sugino 75 comes with 1/8" rings right?
    not always. mine were 3/32" stock on a KHS. stamped w/Sugino75 *and* NJS approved.

    TA makes 130mm BCD 1/8" rings as well. $60 though, http://www.peterwhitecycles.com/chainrings.asp
    Miche makes 1/8 rings for 135mm campy-standard.
    everyone makes 144 BCD 1/8" rings (Sugino, Shimano, Campy, FSA, ....). 144mm 3/32" rings are widely available too (Sugino, Blackspire, Shimano...) .
    151 BCDs are a bit harded to find.

    SO you should be able to find a 1/8" ring for whatever BCD road cranks you decide to use. Unless you pick something totally weird.

  7. #7
    tbk
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    TA make 1/8" rings in both 130 and 135 mm bolt circle, as well as 144mm

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