Newbie BMX Questions

Takingabreak

Dave Yates Fan
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Hi,

I'm looking for some help regarding a BMX I picked up for my Daughter.

It's a Redline RL240 from late 90's (I think)

I've a question about cranks and bottom brackets, I've yet to strip it down bit it looks to have threaded cups and a crank that passes through the bottom bracket shell. The thing is, it's quite a long crank. Are short cranks available for short people? I've spotted a square taper crank from Sinz that looks ideal but can't see that a square taper bottom bracket will fit the shell. I've not measured the BB shell but it looks oversized compared to a normal bb shell.

Any experts out there to point me in the right direction / correct my thinking?
 
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the chainring is attached to the crank via a locknut which also acts as a cone for the bearing, generally u need a big pair of grips to remove the lock nut
 
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