Found this post number 78 in the thread from extreme speed competition2006 in germany ( which is now also to take part in 2008 anual event )
http://www.rcuniverse.com/forum/fb.asp?m=7754224
there they refer to using modified 91 OS VRDF for speed compition
Havent a clue what modes are needed but the airframes might supply plans
thread is here
http://www.rcuniverse.com/forum/m_3740991/tm.htm
chow 4 now
balsaeater