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Thread: bmx chainring

  1. #1
    Senior Member sorsha6's Avatar
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    bmx chainring

    I want to get this chainring for my 07 Maidson which currently has a 68x108 Truvativ Cartridge square taper bottom bracket. I don't know how a bmx bottom bracket would translate, or if it would even be possible to use one on a track bike... any advice?

    thanks in advance!

  2. #2
    spin The LT's Avatar
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    you would have to get new cranks based on the way that those chain wheels fit onto the cranks

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    Senior Member sorsha6's Avatar
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    yeah i know, i should have mentioned that as well.

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    or tarckeemoon, depending marqueemoon's Avatar
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    So you want to buy a new crankset and bottom bracket just so you can run that chainring? Why?

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    spin The LT's Avatar
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    fashion

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    Senior Member sorsha6's Avatar
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    Why does it matter why? I was just looking for some info.

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    spin The LT's Avatar
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    it doesn't matter why....i just don't have any info...so i am being an ass

  8. #8
    or tarckeemoon, depending marqueemoon's Avatar
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    It can be done. Paging mrwhite?

  9. #9
    i ride a bicycle
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    what's the little red sticker on the bars near the stem in pic #3?

    Mac

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    given i don't know all that much about road bike bottom brackets, i do know a fair amount about bmx. the only bottom bracket that i know of that threads into the frame is a "euro" bottom bracket. i'm not sure if there are different types of threads/sizes/etc on road frames, but visiting www.empirebmx.com would help. they're definitely the best in the business for mailorder. http://www.empirebmx.com/catalog/sho...t=catalog.aspx there is a bottom bracket for profile cranks. you'd need to get new crank arms and a spindle to run that sprocket. it would probably cost you around $200 alone just to get a new bottom bracket and cranks to use the sprocket. i hope that helps.

  11. #11
    or tarckeemoon, depending marqueemoon's Avatar
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    Quote Originally Posted by sac02
    what's the little red sticker on the bars near the stem in pic #3?

    Mac

    Comes on all heat treated Nitto bars.

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    Doortrapper popluhv's Avatar
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    You might want to look for a purple anodized MTB chainring instead. thefact that there appears to be only one contact point between crank and ring, seems dicey.

  13. #13
    skinning up
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    Quote Originally Posted by marqueemoon
    It can be done. Paging mrwhite?
    i have to admit, those thick chains get me off.

  14. #14
    or tarckeemoon, depending marqueemoon's Avatar
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    Quote Originally Posted by gargiulo.mike
    i have to admit, those thick chains get me off.
    Do you have another forum up now that this post was intended for?

  15. #15
    Stinky McStinkface exfreewheeler's Avatar
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    I actually posted about this a few weeks ago.

    MrWhite's setup looks awesome.

    I like the look of those Profile Cranksets. One of those BMX companies make a crankset with a square tapered bottom bracket. They do make some sweet looking chainrings; I assume they are very strong and also a bit heavy. Not that weight is an issue.

    They make 165mm crank arms, but even shorter or longer if you want.
    Because, yeah... uh huh! Umm, yeah!

  16. #16
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    BMX euro bottom bracket & matching cranks and you're done. I'm surprised more people don't use this for FG
    "I don't buy new frames, it just encourages them."

    -T.G.

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    Stinky McStinkface exfreewheeler's Avatar
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    So "Euro" is the same as "English" threading?
    Because, yeah... uh huh! Umm, yeah!

  18. #18
    Senior Member sorsha6's Avatar
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    Quote Originally Posted by Landgolier
    BMX euro bottom bracket & matching cranks and you're done. I'm surprised more people don't use this for FG

    Yeah so why don't more people do it? I guess for weight concerns, which for the most part I could give a s**t less about. There are so many cool bmx components...

  19. #19
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    I guess weight, and the fact that all of this FG stuff started with track bikes and moved toward road use and parts. Also, not too many BMX rings come in large enough sizes for reasonable gearing with 700c setups. Most of us got out of BMX before euro bottom brackets were big, and the single pin setup on a BMX crank isn't the greatest idea for fixed anyway.
    "I don't buy new frames, it just encourages them."

    -T.G.

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