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BMX axle standard size?

ATOMICFIREBALL

DISARMED IN A BATTLE OF WITS
May 26, 2004
1,354
0
Tennessee
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 .

 

w00dy

In heaven there is no beer
Jun 18, 2004
3,413
30
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.
 

ATOMICFIREBALL

DISARMED IN A BATTLE OF WITS
May 26, 2004
1,354
0
Tennessee
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!
 
Aug 6, 2006
349
0
Denver, CO
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.)