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Thread: Middleburn help

  1. #1
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    Middleburn help

    I just got a set of middleburns for my single speed. The cranks come with a nut that tightens down on the inside once you have the chain ring on. What tool do I need to tighten the nut down on the chainring? I can't find anything that seems to be that size with all the park tools. Middleburn's site is no help either

    Thanks.

  2. #2
    Trail Tire TV on blogger
    Reputation: thomllama's Avatar
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    guessing it's slotted? need one of these

    Park Tools Chainring Bolt Tool CNW-2
    Park Tools Chainring Bolt Tool CNW-2 - Google Search

    usually a 5mm or 6mm bolt on the outside..

    some chain ring bolts use a 4mm allen inside and 6 outside ..
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  3. #3
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    No, sorry I did not make it clear. It is a spiderless chainring. It is one large bolt on the back side of the crank arm and holds the spiderless chainring in place.

  4. #4
    Anchorage, AK
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    Re: Middleburn help

    Quote Originally Posted by gsheffer View Post
    No, sorry I did not make it clear. It is a spiderless chainring. It is one large bolt on the back side of the crank arm and holds the spiderless chainring in place.
    Bottom bracket tool.

    --Lars
    --Peace

  5. #5
    Trail Tire TV on blogger
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    ahh well, no clue. never played with one
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  6. #6
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    Park Tool BBT18 is the one I think. It's an 8 prong BB tool, maybe ISIS.

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