The variable pitch is a pretty cool unit to have. It is a tail section off of a eco 8 that has been fitted on a axi 2208/34. It is cool for the hovering nose down. or just the sudden stops in the air. I think that it is big because it is new. I was messing around with some a few weeks ago. They are great to use for going up and coming down slow but I dont think they fly as well for other areas of 3d as you have to pack 24 degrees of pitch in the range of your throttle so it makes the throttle pretty touchy.

Andrew