I have built a 3D model for OS 50 SX. Is 1 servo (S3001 or equivalent) enough for the elevators? I'll be using a regular Y pushrod with hardwood stick between the 6" - 8" metal rods on both ends. It has large elevators about 2/3rd of the total stab area.

The other option is 2 servos and pull pull setup on each elevator. But since the S3001 servo is not a high end one, I may have speed or centering difficulties between the 2 halves.

Weight is not a problem.
Any feedback would be appreciated.

Vikas

could you give us more info like the elevator area and the travel you will have you mite me better to spend some money if the size is about the same or bigger than the h9 funtana i dont know futaba servo numbers but its better to have more than you will ever need and the stronger servos have better gears to since weight is no problem you could probley go with a 1/4 scale servo it would be cheaper

I would go with two hs225 or a digital like a hs-5625 you will need the holding power if you have huge throw to keep the flutter monster away.a 1/4 scale servo no way!!if cost is a issue then I would use two 3001, power and centering wont be a big isue on that size plane.

Darin

On a 3D plane, weight is ALWAYS an issue

Thanks.
I also have 2 spare 9201's which would be good. Think ill use 2 of them.

I think that is a little overkill. I have a Seduction Freestyle that I am sure has equivelent if not greater loads on the surface and I use a Hitec HS-5475 for the elevater with great results. I am on 6v and don't really see the need to go woth any more torqe. The digital quality of the servo is really a bonus as the surface has a ton of holding force. Of course there is no binding at all as the servo and rod is outside the model.

I would use one of those 9201s. But dont use a stick with split rods. Got the Dave Brown pushrod setup. It's a fiberglass arrow shaft with ends to do exactly what you need.
I used this setup on a Pizzaz and after 200 flights no problems.
David

David
Your suggestion is very good but here in India we don't get any aeromodelling stuff - we also need to blend our own fuel. Everything needs to be purchased from outside and since I do not have the Dave Brown pushrod, this option is out of my consideration.
I do have the Sullivan inner - outer rods but I have never liked them.

Vikas

I woulndt use anything by an Anti-3D guy on a 3D airplane.

Dave Who?

Vikas..........Sorry I didn't look to see your local before my response. In your case a dowell rod is the answer.
Have you set one up that way before.

Larry...........who is anti 3-D? Dave Brown? Is he the cause of the AMA BS?

David, there is no reason for you being sorry about that.... you are not expected to know what one gets where...

I have used the dowel rod system many times but unless it is absolutely perfect which is very hard to achieve, the elevators NEVER travel together in air....it shows even when pulling vertical... and due to the geometry of this plane, I cant get a very good fit.

No thread is safe! [X(]