How do I tidy up crank w/o big ring?- Mtbr.com
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  1. #1
    Compulsive Bike Builder
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    How do I tidy up crank w/o big ring?

    I am thinking of going with two rings on the sand crawler I am building (kiwibikers name his Canning Stock Route Pugsley, I like it). I would be losing the big ring and maybe installing a 36T middle ring or something like that. That leaves a very unfinished looking crankset. Here are some options I have and what I think of them, I am looking for better ideas:

    1) Install a bash guard. I am partially doing this for weight savings, I would rather just keep the big ring.

    2) Just lose the big ring and install shorter chainring bolts. This would work, but would just look really bad. I would get over it, I guess.

    3) Install some washers or dremel out something to fill the gap more nicely. Would probably look really bad.

    4) Grind away the crankset so it looks nicer. I probably, realistically, don't have the skills/machinery to do this, see #3.

    5) Look around for a product like I describe in 3. Is there such a thing? Seems possible, but I have never seen anything.

    6) Post something to this board and see if there are any better ideas from other SS/29er riders.

    X-post to 29er board.
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  2. #2
    French for "Suck"
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    There are skinny "bashguards" for CX bikes that I've seen, carbon fiber and the like. I don't know whether you'd be able to get them in your BCD, but it's worth a try.

    Otherwise, you're stuck with the extra heavy thing on (bashguard or teeth-ground-off big ring) or an ugly crankset. Pick which you can live with more.

  3. #3
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    7) Grind down the teeth on an old Outer Chain Ring.

  4. #4
    Baron of Gray Matter
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    You can take you big ring and cut out the sections where the ring mounts to the crank. Then file/grind them to pefect size and use them as washers. Not the cleanest way to do it, but it's cheap.
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  5. #5
    Medium?
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    Quote Originally Posted by Homer Simpson
    You can take you big ring and cut out the sections where the ring mounts to the crank. Then file/grind them to pefect size and use them as washers. Not the cleanest way to do it, but it's cheap.
    I did this on my 1x(9-2). The (9-2) means I also cut two big rings off an old 9 speed cassette. It works, but it's not pretty. I skipped the "file/grind them to pefect size" part.

    It was a PITA, and I'd buy bmx chainring bolts if I were to do it again.

    Nashbar has bash guards for $15.

  6. #6
    The devil is an angel too
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    Buy a BB with a shorter spindle and mount the ring on the outside?

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