gjs,

I think you've misunderstood my posting.

I already know all the things you mentioned, and am not looking for any one to do research on the net or elsewhere. (although I'm sure we all appreciate your effort) I already know that the data we would be looking for does not exist.

What I'm doing instead is building some physical models of things I haven't seen done before, and then we'll know if, for example, double-slotted flaps are more effective than single-slotted flaps, at this size. My experience in the past tells me that it probably will not make much difference, but it's an interesting project, regardless. (Reynolds number "cutoff" for airfoil effectiveness at typical model speeds seems to be about 5 inches chord.)

I've already created a "High Lift" section on my web site, aside from the model construction article, at http://homepage.mac.com/mikejames/rc...ite/index.html and several people have contributed ideas on the mechanics of these things.