Red Arrows Hawk – Return to flight

Finally got back in the air again after the FOD incident on the second flight.
I installed a Wemotec rotor into the original fan housing. I was planning to use the whole Wemotec fan unit however it would have needed modifying to fit the Sapac motor. In case I want to upgrade the power system in the future I have the housing ready to use.

After dynamically balancing the motor and new fan it works very well. Has a nice smooth sound. I found a very interesting method using a phone with an accelerometer & a spread sheet program.
Here is the link on how to do this: http://www.rcgroups.com/forums/showthread.php?t=1267814

It a tricky one to keep in frame

[yt]http://www.youtube.com/watch?v=sMAKVHLvTPg[/yt]

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