UMD's closing statement makes all the pain in my butt worthwhile.

Thanks.

I just put together a low wing (slight dihedral) 80.5 inch wing span ARF and it will end up at 19 pounds and have a wing loading of 47.5 oz./sq. ft.

What can I expect from this model. I have not flown a plane with anything near this type of wing loading am don't want to wreck this plane as I have quite a bit of time, money, and effort in it.


Thanks

it would be helpfull if u gave more details. eng? type airfoil? planform??

The ARF Cessna twin by Great Planes -is in that ballpark and flown correctly - flies and lands nicely but for the newbie , could be a disaster .
yours sounds a bit small for that loading ---
Ideally, on a powered model for sport use at 80" span it would be closer to 1/2 that loading

http://www.kmp.ca/product_info.php?c...fbdbd6178adf0f


RCV 120 engine



Thanks

Crud, had a long response that "timed out" and I lost it, so starting all over I'll be brief.

That things heavy and the recmnded hi-pitch prop is CRUMMY for t/o and climb. Use a long paved (?) ruway to get as much speed as possible b4 flying. Be gentle and expct difficult and doggy climb. Get 3 mistakes high and slow-flight/stall it to get a feel for landing. Plan on a flat appch w/ pwr till Ur used to it.

I hope I'm wrong and it's a rocket. Either way it'll be one of your club's stars. Let us know how it went?

The trick with a heavily loaded model like that is to be sure to avoid it lifting off early and be very careful not to let it pitch up right from liftoff to a high degree. You want to lift it up a few inches and sort of hold it there while the speed builds and only then let it "glide uphill" with a shallow angle of climb. When you're about 300 to 400 feet up then start playing with it. Up to then it's very gentle turns only. Once up to height start to wring it out in stages and be watching for any bad signs of early stalling and stuff like that. In particular it probably won't like tight turns or tight looping maneuvers since the G load will tend to make it stall in the tighter turns more easily when the need for lift ends up with you reaching the stall angle a lot easier than a light model would do.

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