Comments on: Insane indoor aerobatics http://www.madskies.com/111/insane-indoor-aerobatics/ There are more things between heaven and earth than we can imagine... these are real Wed, 07 Jan 2009 02:11:21 +0000 http://wordpress.org/?v=2.3.1 By: jhon http://www.madskies.com/111/insane-indoor-aerobatics/#comment-140 jhon Mon, 25 Feb 2008 01:56:53 +0000 http://www.madskies.com/111/insane-indoor-aerobatics/#comment-140 it's called vpp variable pitch propeller. it’s called

vpp

variable pitch propeller.

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