Brushless Lipo RPM numbers

[BandMBoy]

hi everyone, just wondering if anyone has the RPM numbers of any of the brushess motors, free running with 7.4v going through them.

[spmcc]

Jon, if you know the KV rating of the motor, it's a simply multiplication.
Example. Motor rating 7.7KV this equates to 7700 revs per volt. Attach to a 7.2V battery, the sum is 7700x7.2 which equals 55440 revs.
I will bow to superior knowledge but I'm pretty sure that this is right.