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Challenger utilizes a higher reduction drive when people want to swing a
longer prop. I've no direct experience doing it on mine, but I have heard
no negatives either. One would expect to have to trim a bit.
"wright1902glider" <wright1902glider@aol.com> wrote in message
news:1165938855.805277.297360@79g2000cws.googlegroups.com...
> The likely outcome is that
>> you will have a bird with some strange and possibly unpredictable ways.
>
>
>
> Center of lift also moves around a good bit depending on AOA, airspeed,
> load, type of airfoil, etc. And its movement is non-linear. Otto
> Lilienthal suspected this and I think there was a discussion of it in
> his book. Octave Chanute and Wilbur Wright debated it at great length
> in 1901, and its in thier letters. And finally, Wilbur and Orville
> discovered just how much it can move, and in what odd unexpected ways,
> when they conducted the wind-tunnel experiments in 1901.
>
> For a real-world demonstration of what happens when you screw up your
> CG calculations, check out the Stormy Petrel 3:
> hometown.aol.com/wright1902glider/page3.html Interesting how it can
> balance itself on the downtubes without any tie-downs, and yet it cannot
> lift off and blow away in a 30mph wind? When I static tested it 3 weeks
> after this photo, I found that the actual CG was 23" behind the
> hang-point. Opps.
>
>
> Harry
>
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Re: thrust line for engine and not mounting engine on this thrust line
