I'm building a Phaeton 90 and am confused by conflicting information i've heard about wing incidence stability.

I contacted Balsa USA and was informed of the following:

For optimum aerobatic performance set it up, top wing 1-2 degrees negative, bottom wing 0.0, tail 0.0 but like this you should only need 0-2 degrees down thrust and I would say 1-2 degrees right thrust. this will make the model real quicker in turns, spins, snap rolls and other maneuvers entered through stalling the model, but will also lead to higher stall and landing speed and possibly tip stalling.

For optimum stability set it up like this, top wing 1-2 degrees positive, bottom wing 0-1 degree negative, and the tail 0.0. with this you will need more down thrust maybe 2-3 degrees and again right thrust should be 1 -2 degrees. This will provide easy going flight with a very gentle stall and lower landing speeds, but will make the model slower in roll rate and less likely to spin.

I've heard from others that the reverse is true, stability would be greater if the incidence is set to negative on the top wing, rather than positive. I'm looking for low and slow stable landings.

Any help would be appriciated,

RickT
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