I have my first plane with flaps and will be making making it's maiden soon.

What are the do's and dont's? I have a Futaba 8UAP transmitter and the flaps are set up on chnnel 6 it has a dial with "plus & Minus" symbols. The plane is a Hanger Nine 40 size Ultra stick.

Gary

Check this article:

http://www.modelairplanenews.com/Med...ager/flaps.pdf

I believe that the more important don't is: to retract flaps when the flying speed is too low to sustain flight without ailerons.

I have a couple of Ultra Sticks with flaps and crow set-ups. You will want to mix in some down elevator because the plane will pitch up when you put the flaps down. Start with about 6-8% down on the elevator and adj from there. Dont flip the flaps at high speed. Get the plane up about 80-100 ft and flip the flaps at about 40% throttle to see what it does. If it pitches up a lot, add more down elevator.

Thanks guys.

Gary

This is not always correct. Not all planes will pitch up some may even require up elev. test fly at high altitude before doing anything

He clearly stated he has a Ultra Stick 40. They climb with flaps.

It is always correct with an ultra stick. I also own one and it pitches up pretty quickly when you apply crow. Start up high and get it tuned in before you try and use it to land. When you flip it into crow you will want to be pretty slow....thats what it's for anyway. I usually hit the switch when i'm around 1/8 throttle, Idle if my nose is pointed straight down. You should be able to be just above idle, flip the switch and have little change in pitch. Once you can do that, you will have a blast coming in really slow and goosing the throttle just before you touch down, or to harrier in the wind. Good Luck.

Oh ya. The Stick will climb if you give it to much throttle when coming in to land. If your a little short on your approach and need to give it a little throttle, do that, A LITTLE throttle. You grab a bunch, it will pitch up and start to climb a lot. Hope this helps. Scoot

The key is to practice at altitude. Test different speeds and throttle settings as well as transitions. You don't want to be surprised at low altitude.

I think the main thing is get completley at home with the aircraft, Don't mess with the flaps until you know and feel comfortable with the plane. Then climb to three dumb high and play with the flaps.

Any plane will climb with flaps deployed - After all, they ARE designed to create more lift. But after an initial "balloon" when deployed, allow the plane to settle into its new configuration and see how it feels.

Most of the planes I have used flaps one require nothing, but I have had a few (and only a very few) that did need about 6-8% of down elevator mixed in.

Without the down trim, they flew very "floaty". Sort of a nose-up attitude and on the verge of a stall. With increased power to prevent a stall, they tended to climb - not what you want when you're trying to land.

So just a tad of down keeps the nose pointed in the right direction.

But you'll have to fly it first to see how your particular plane handles.

I'm new to flaps also and just finished buildinga Storch (German observation plane wwII). Do any of you have experience with the flaps on one of these? I'm attaching picture of it as it's quite different.

I'll try attaching picture again. I'm new to flaps also and have a Storch (German observation plane wwII). Do any of you have experience with the flaps on one of these? I'm attaching picture of it as it's quite different.

The full scale Storch was equipped with slotted flaps, which work alike any type of flaps, only that the provide a higher coefficient of lift to a wing.
In simpler words, they are more effective or powerful for relative same area of flaps.

Copied from: http://en.wikipedia.org/wiki/Flap_(aircraft)

"Slotted flap: a slot (or gap) between the flap and the wing enables high pressure air from below the wing to re-energize the boundary layer over the flap. This helps the airflow to stay attached to the flap, delaying the stall."

Copied from: http://en.wikipedia.org/wiki/Fieseler_Fi_156

"Design and development
In 1935, the RLM (Reichsluftfahrtministerium, Reich Aviation Ministry) put out a tender for a new Luftwaffe aircraft suitable for liaison, army co-operation (today called Forward Air Control), and medical evacuation, to several companies. Conceived by chief designer Reinhold Mewes and technical director Erich Bachem, Fieseler's entry was by far the most advanced in terms of STOL (Short Take Off and Landing) performance. A fixed slat ran along the entire leading edge of the long wings, while the entire trailing edge, inspired by earlier 1930s Junkers "double-wing" aircraft wing control surface designs, including the ailerons, was a hinged and slotted flap."

The advice above applies.

1. Realize that most planes that come with them land just fine without them. (Jets might be an exception but thats not important here)
2. Try them up high to get a feel for them before you try them on a landing approach.