Adjusting Throw on my first build
 

Hi all
Building my first - Hobbico Superstar trainer Electric w/ailirons - down to adjusting throw of the control surfaces.
The instructions recommend rudder 1/2 inch but i'm getting 1 1/2 inches - elevator also too much - pushrod is in the innermost hole on the servo and innermost hole on the control horn - i'm lost - what else can I do?
Lenny

RE: Adjusting Throw on my first build
 

Figuring out control horns can be a bit confusing when you are first getting started in the hobby. Look at the attached diagrams and hopefully you'll get an idea of what you need to do. Basically, at the control surface end you get more throw at the inner holes and less throw as you move to the outer holes. At the servo end it is totally opposite, less throw on the inside holes and more throw in the outer holes. To fix your problem you need to move the pushrod to the outer holes at the control surface.

Hope this helps.

Ken

RE: Adjusting Throw on my first build
 

Thanks Ken

RE: Adjusting Throw on my first build
 

Well that really helped - still off though - rudder should be 3/8 is 3/4 - elevator should be 1/4 is 1/2 - got the pushrod in the innermost hole on servo and outermost hole on the control horn - anything else I can do or should I just try it as is (with a trainer) and see how it flys before doing anything drastic.
Lenny

RE: Adjusting Throw on my first build
 

Hi!
Well you have a lot more holes in that servo arm and control arm to try out...;)
There is a simple rule though that is good to always have in mind and that is: Always make the servo arm as short as possible ...and always make the control arm as long as possible !
If you follow this rule your flying surfaces will be stiff, which is Very important!

Regards!
Jan K
Sweden

RE: Adjusting Throw on my first build
 

Lennyshotgun,

Where do you have the control horns placed on the control surfaces? The holes
on the control horn should line up with the gap between the fixed surface and the moving
surface such as the horizontal stab and the elevator. If you do not have them positioned
in this fashion you will get less throw than you should.

Andy

RE: Adjusting Throw on my first build
 

I have found that to have 1/4" on ail, 1/2" on ele and 1" on rud is a good start, will not be twitchy at all. To have only 1/4 on the ele is not that 'safe', you may not have enough to get out of trouble esp. if the plane is too nose heavy!

RE: Adjusting Throw on my first build
 

are you using a computer radio?with them you can adjust the throws also.

RE: Adjusting Throw on my first build
 

All good advice but you need the control horns placed properly or they will not
adjust properly, please check that.

Andy

RE: Adjusting Throw on my first build
 

Yes, having the control horn place properly on the control surface is important. Having it incorrectly placed won't necessarily give more or less throw, but more often than not it changes the geometry of the throws. Usually giving you more throw in one direction and less in the other. The holes in the control arm need to be placed directly above the hinge line for that control surface. See the attached diagram to get a better idea of that I'm talking about.

Hope this helps

Ken

RE: Adjusting Throw on my first build
 

Wow - I read that part in the directions and was careful to place the control horn properly - but when I took it apart to change the hole the pushrod was in, I put it back backwards - when I read the last posts I went back, Just to check - thanks for pointing it out again.
Just want to say thanks to all for your help - this is a great forum.
Lenny

RE: Adjusting Throw on my first build
 

RCKen,

Our work here is done................ ;^)

RE: Adjusting Throw on my first build
 

;)

:D

RE: Adjusting Throw on my first build
 

I just finished a World Models CAP 232 46R and have put a YS .63 in it with a 13x4W APC prop. I have available, 45 degrees of aileron, each way, 70 degrees of elevator, each way, and 70 degrees of rudder, each way. Any suggestions on where to set the end points for these on high rates? This is my first attempt at putting together a 3D capable plane. I know this is probably not the best choice of planes but I never do things the easy way.

Thanks,
Al Lewis