Clive,

Some one could do the dive test with a GPS to plot the L/D = Velocity h/
Velocity v = slope of the exponential curve. Point one straight down I think
the wall will be a lot higher than 220 MPH. I have been at 180 indicated
in my old Dragonfly coming down final for a low pass with 55 hp. Low drag
and cubic horsepower proceeded by cubic dollars equal winning plane. Just my
$.02 and opinion not backed by facts.

Regards,

Charlie Johnson, Dragonfly builder
Ogden, Utah


In a message dated 1/1/2011 4:38:50 A.M. Mountain Standard Time,
gobxoy@... writes:

There's no doubt drag is critical but if it's ones goal to have the

lightest and cleanest Q in the air, one should start that concept from the
first layup, not at the end of the project. Again, given the available engines
and HP, I believe this plane hits the wall at around 215-220 MPH no matter
what you do. Unlike Klaus' EZE , this airframe is not nearly as clean. If
Sam or anyone else for that matter ever goes faster than that, I'm all ears.

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