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BMX axle standard size?

Discussion in 'The Shop' started by ATOMICFIREBALL, Feb 21, 2008.

  1. ATOMICFIREBALL

    ATOMICFIREBALL DISARMED IN A BATTLE OF WITS

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    I bought a Banshee Scratch frame with a BB already in it for BMX cranks.
    My question is ;would my RF Evolve cranks(without the external BB) or my SAINT cranks (w/o external BB) work ?

    What diameter are the Saint axle or RF Evolve ?

    Here is a photo,i don't have the frame just yet to try it & wanted to find out if i really need to buy an adapter .

     

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  2. Dartman

    Dartman Old Bastard Mike

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    I would get an adapter for it. Even if the diameter fits the length will be off.
     
  3. w00dy

    w00dy In heaven there is no beer

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    that's why we drink it here
    external bb cranks usually run bearings with 25mm diameter. Some, like the raceface use a little spacer in there to step them down to ~24mm. BMX bearings are almost always 22mm or 19mm on the ID. I'm guessing a standard mountain bike cranks set will not be able to fit through there.
    I recommend you buy a set of calipers. They're only $12-20 and make this type of thing much easier. Actually, that recommendation goes for everyone.

    Edit: what's wrong with BMX cranks?

    edit round 2: I just re-read your post and realized you have cranks that use a standard BB. There is no way to do this without making custom parts. Just buy a used profile or something. They're pretty cheap and last forever. I'm trying to get rid of some right now, check my sig.
     
  4. ATOMICFIREBALL

    ATOMICFIREBALL DISARMED IN A BATTLE OF WITS

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    I ordered the adapter & will try my Saint cranks.Hope the axle is wide enough!

    Also,who makes a x-long rear QR skewer ?

    I'll have it built up by Saturday i think!
     
  5. dirtygirlmagnet

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    the last time I worked in a bike shop (also the last time I worked on a bmx bike) was a few years ago. As I recall, spindle diameters were either 22mm or 19mm(3/4in.)
     
    #5 -   Mar 5, 2008