What is the bottom bracket on a BMX?

Question

I know it is related to the crank, but where does it go and what does it do?

Answer 1

here is a picture of bottom brakets  http://www.danscomp.com/serve.php?serve=...

Answer 2

It's the bit that holds the 2 pedals onto the frame.

Answer 3

It is what the crank, and all your pedalling energy go through.  Bottom of the frame.

Answer 4

bottom bracket is part of your frame. there is a few different sizes, standard & european which differ in circumference.

Your crank assembly attaches to the frame at this point with the spindle in the middle.

Answer 5

It is the bit where the pedal stems attach to a spindle that goes through the frame.