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rich - 19 Mar 2008 23:27 GMT

Hi All,

Just got a kit for a Senior Telemaster to replace the plane I
rekitted, and didn't get any info from the Tech Guy at Hobby Lobby, so
I figured I'd go to the experts. Anyway, this will be the biggest
plane I've had, so a few questions. I want to do bolt on wings, but
that seems easy. I also want to use separate servos for the ailerons.

Do I need ailerons the full width of the wing, or can I shorten up
to 18-24 inches? Will a standard Futaba servo be strong enough for
the job, rudder & elevator too? I have an 8 chan Futaba TX/RX so I
would like to add flaps, separate from ailerons. Rather do this than
combine flaps & ailerons in the 'puter. Gives me more knobs to
diddle.

I'll be powering this plane with an OS61 2 stroke from the last
plane, and am wondering if a 12 inch prop sounds right? Maybe a 12x5
or so??? Looks like a 12 inch will clear the ground easily. Thinking
that 11x5=55 and 12x5=60, so pretty close for power. Any other
ideas???

Once again, Thanks for all the ideas or comments.

Regards,

Rich.....

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Martin X. Moleski, SJ - 20 Mar 2008 00:18 GMT

> ... Do I need ailerons the full width of the wing, or can I shorten up
>to 18-24 inches?

Shorter will work OK.

>Will a standard Futaba servo be strong enough for
>the job, rudder & elevator too?

The plane will be flyable.

It will fly differently with more powerful servos.

Is the difference in response worth the difference
in price? I think so, but YMMV.

>I have an 8 chan Futaba TX/RX so I
>would like to add flaps, separate from ailerons. Rather do this than
>combine flaps & ailerons in the 'puter. Gives me more knobs to
>diddle.

Yes, it's fun to play with the extra control surfaces.

I've got a Hangar 9 UltraStick with flaps that can also
do crow (droop ailerons, raise flaps--maximum drag).

I enjoy fooling around with the different flight modes.

> I'll be powering this plane with an OS61 2 stroke from the last
>plane, and am wondering if a 12 inch prop sounds right? Maybe a 12x5
>or so???

I think of 12x6 as the standard .60-size prop.

So I'd move to 13x5 if you want more pull and lower
top speed.

Let us know how it turns out!

Marty

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Ed Cregger - 20 Mar 2008 03:35 GMT

>> ... Do I need ailerons the full width of the wing, or can I shorten up
>>to 18-24 inches?
>
> Shorter will work OK.

******But, increase the chord by x2. Nothing worse than a lightly loaded
flat bottom wing flying in the wind without sufficient authority to control
the model.

>>Will a standard Futaba servo be strong enough for
>>the job, rudder & elevator too?
[quoted text clipped - 5 lines]
> Is the difference in response worth the difference
> in price? I think so, but YMMV.

******I agree with Marty that more servo power is better. Don't forget about
using two more of the same type of servos to "double-up" on the
rudder/elevator.

>>I have an 8 chan Futaba TX/RX so I
>>would like to add flaps, separate from ailerons. Rather do this than
[quoted text clipped - 16 lines]
> So I'd move to 13x5 if you want more pull and lower
> top speed.

******Your engine will easily handle a 12x6-7 to a 13x5-6 without sweating
it.

> Let us know how it turns out!
>
> Marty

******Like, Marty, I'm interested in reading about your experiences. Just
like talking models at the field. <G>

Ed Cregger

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Model Forum / Radio Controlled / Air Models / March 2008

Senior Telemaster