Hi,

This may be an over asked question but I can't seem to find the information anywhere. Can anyone provide at least a guildline for proper wing loading of a stunt model. I am referbishing a 60 size stunter that is based on the SV11 wing. I believe that the model is on the heavy side but I have no clue what heavy is.

Thanks for the help.

Tim

I've been reading up on this subject lately and looking at various posted figures as well as published wing loadings for some good stunt aircraft like the Nobler and Primary force, it looks like the acceptable range is about 10 to 14 oz per square foot with the mean, 12/foot about right.

So I have a Vector 40 that comes in at 50 oz. With a wing area of 536 in/sq, that works out to 13.4 lb/ft sq. A little on the heavy side which my buddy, Ty, had predicted.
My Brodak P-40 weighs in at 53 oz. With a wing area of 560 in/sq, that works out to 13.6 lb/ft sq. Now I know we someone posted that they cannot afford 3 oz! If I can drop the P-40 weight 3 oz to 50, the wing loading drops to a better 12.8lb/ft sq!

Mine's because I use modern paint.

I do like coming into threads like this, and dropping a hand grenade or two..

While I don't argue that for a 600 sq model, 12oz/foot is a good point to shoot for, but experience has shown that a smaller model would fly like a dog at 12/ozft, and a correspondingly larger model would be a floaty feather at 12 oz/ft. which is why cubic wing loading may be more appropriate for discussing models of various sized, (from 200sq in to 700).

So I can conclude that mathless or not if it coincides with expectations then it qualifies as answering the original post, that is it is of help?

So, maybe if someone was to graph out an average wing loading of model stunt aircraft from 1/2A up to a 60 size plane, might we get a general idea of what a good target weight would be if not specified by the designer?

My 480 square inch Fancherized Twister weighs 53 ounces, dry.  That works out to nearly 16 oz/ft².  Probably more at takeoff.

And, while Paul Walker does not shake in his boots when I step into the circle at local contests, I do usually manage to come in one or two places off of the bottom in Expert.

Pipers,, King Airs and 737's are not required to do loops, square or other wise let alone climb vertically. Their wing loading can be higher as all they do do is climb out, level flight and land, but look at the wing loading of a full size acrobatic aircraft like a Citabria or Extra 300 etc.

I inherited a 590 sq inch monster that started out as a modified Shark 45. It was so heavy that the take offs and landings were 40 pointers by default.  But the loops etc., were really bad. I stripped it, sanded, carved and removed a lot of castor soaked balsa, recovered and flew it. Better, but still too heavy. Saved the bell crank.