Thanks! Youre correct, i meant CM not inches. Mistyped that.

Should geometry really matter if im standing to do a trackstand? Since im only holding the handle bar and standing on the pedals. His chain is actually a little more loose than mine.

Longer crankarms gives me a wider stance and longer strokes, more torque to pull a stop/slowdown.
Shorter crankarms will be more narrow in stance and shorter stroke (faster revolution around).

Hmm i dont get it.