Control Surface Area for 3D
 

I thought this would be an interesting topic...not only that, I'm close to cutting out my elevators for my 1/4 Lanier Extra 300S. From a percentage standpoint, the plans call for approximately 30% of the horizontal stabilizer to be used as the elevator with no counterbalances. I am assuming this would be inadequate for 3D flying. Does anyone have any suggestions for control surface sizes for the average 1/4 scale plane?

Control Surface Area for 3D
 

Rougly 60/40.

60 elev
40 stab.

Control Surface Area for 3D
 

In your opinion, what is a good percentage for the rudder?

Control Surface Area for 3D
 

Proably close to the same. 60/40. Rudder - fin.

How much do the plans call for?

Control Surface Area for 3D
 

Plans show approximately 60% rudder/40% stabilizer, which includes the counterbalance. Visually, it appears as though the entire surface is cut down the center. By the way, thanks for your input!

Control Surface Area for 3D
 

Generally I would trust the designers. They pretty much know what people are going to be doing with their planes and design accordingly..

Control Surface Area for 3D
 

grebner1......Im doing the same thing but on a small scale. Im doing it to a .40 300. The rudder was bearly 50/50 and the elevator was 75//25 stab/elev. Now the elevator is about 50/50 and the rudder is 25/75 fin/rudder. Its a little hard to see but look at the tail and tell me what you think.

Control Surface Area for 3D
 

heres another.

Control Surface Area for 3D
 

Looks nice!

What motor for it?

Control Surface Area for 3D
 

I am putting a os 50sx in there. I might try to put a tune pipe in it. Dont know yet. Plus i did abunch of stuff to get the wieght down. I dont think theres any thing in it stock. hehehe.

Control Surface Area for 3D
 

click on the www on the bottom and you can see a lot more of it. Just go to ITS HERE.

Control Surface Area for 3D
 

Is it the GP .40 sized?
I had one. Nice plane.

Control Surface Area for 3D
 

I did.

Very nice.
Whats it going to be covered like?

Control Surface Area for 3D
 

ya thats the gp. Cant wait to see how it does with the sx tail on it. I didnt change the ail at all. If it flys real good that i will have to make a new wing. I made the wing diffrent that the kit. Cut my own ribs and used 1/4 x 1/8 spruce spars. The wing is REAL light. Still trying to get some more wieght out of the fuse.

Control Surface Area for 3D
 

I still dont have a scheme. Im lousy at thinking up scheme's. Got any idea's?????????

Control Surface Area for 3D
 

I was trying to find a pic of mine. I dont know what I did with it. If I find it I will post it.

Control Surface Area for 3D
 

I had one too and built it stock except for replacing the built up elevators for solid. I ran a saito .80 4c and didn't take ANY additional measures to lighten, so I ended up with a squirly, overpowered plane. I covered mine just as Great Planes did on the cover of the box using monokote for everything. I printed stars from my pc and laminated them onto red monokote, cut them out, and applied. I did the same with the blue stripes running the span of the wing, stab, and fuse. I prefer regular monokote over decals and adhesive-backed colors because it (in my opinion) is much more permanent. I've never had a problem with my trim delaminating. Boy, did I love that plane!