flaps
 

building a P-26 Peashooter. The flaps are actually part of the wing.... in other words part of the trailing edge of the wing are the flaps. When they are down, you can actually see inside the wing. Anyways....want to try to operate the flaps using only 1 servo. Anyone got ideas of how I can do that.

RE: flaps
 

Use a torque rod like a single servo aileron set up would use would have. You can either bind the two arms together or make "Y" connector arm so you can adjust each flap for deflection.

JimO

RE: flaps
 

You can also use a single, center mounted servo with bellcranks connected with a dual ball link on control rods. 

RE: flaps
 

Here are two ways

RE: flaps
 

I've seen these RC drawings many times on the forums, what software are you using?

RE: flaps
 

Just for the record that type of flap were known as "split flaps". The lower surface of the wing hinged downward and the upper surface remained in its normal position.

John

RE: flaps
 

Yeah, what software are you using?

Inquireing minds want to know :D

RE: flaps
 

Ya, I would like to download your whole library full of those drawings. It seems like you always have the right drawing to answer every question someone could ever have.:D

RE: flaps
 

Most of the pics I post I just whip up in Photoshop.

The first 4 here are all Photoshop. The last two are done in Sketchup

I've been saving these almost since day one here at RCU and I now have a collection of over 600 images :D

RE: flaps
 

Photoshop....well, that counts me out.
I do have t a copy of it, and usually by step 4 I make things FUBAR.
I'm only at the forum level of 'puters I guess. [:o] I'll just watch yours instead!
The Surpass looks great!

RE: flaps
 

Split flaps on my DynaFlite PT-19
http://www.angelfire.com/indie/aerostuff/pt19.htm

RE: flaps
 

Is that OK for the aerodynamics and protection of the wing structure from air humidity?
Shouldn't the bottom of the wing be covered and then the retracted flap rest underneath that surface?

Very nice drawings, Mike![sm=thumbs_up.gif]

RE: flaps
 

Not neccessarily if you are talking Scale. Virtually all full scale split flaps did not emply three surfaces and the interior of the upper surface was exposed when the lower surface (flap) was extended.

John

RE: flaps
 

Full-scale Spitfire split flap...

RE: flaps
 

I see how it is done with metal; thanks!

RE: flaps
 

That particular Spitfire was found in a bog in England about 8 years ago, after vanishing in 1942.. It was under restoration at California City.
It was a rare chance to see one without the wings on, and see what the landing gear retract hookup looked like.

RE: flaps
 

WOW!!!!

I would have thought these were from a top secret R/C CAD program from the 70's or something :D

Photoshop is out for me, but that explains the awesome pictures.....and I just downloaded Sketchup from Goggle for free....

Doubt I will get good enough to use the pro version for $495 but who knows......

You should sell your collection on Cd Rom :)

RE: flaps
 

GIMP is a free clone of photoshop.  Will do anything an amateur needs.   http://www.gimp.org/

RE: flaps
 

I'm only using the free version of Sketchup too. I don't need the features of the $495 version.

RE: flaps
 

Great pic!
Thanks Tall Paul.