Which microservos for a floater RES sailplane?

[egianello]

People, days ago I`ve posted in the Radios seccion:

http://www.rcgroups.com/forums/showthread.php?t=1008802

I still think that one of these 30 or 35 oz.in servo will be correct for my sailplane, just want to know what you think.

I hope some experience based opinions.
Thanks a lot.

[schrederman]

I use HS65's in my 100" Bantam. No problems at all in 2 years. If you have room for a little bigger servos, HS85MGs work well in my 128" Hawk and 130" Yardbird. I regularly scream these carbon-sparred wonders down from way up and ping the heck out of them on launch... no problems. I am not sure what the torque specs are for either of these servos, but they work well.

Jack

[glidermang]

egianello:

In my experience, 30 oz.in can move any sailplane surface in any direction, any time. These should do the job very well, I would think, for most any airplane up to 3 meters. Others may disagree.

I have not seen any emperical data or analysis of hinge moments and servo torque. Maybe someone out there can define the required torque.

But again: I have been flying very happily on servos much like the ones you describe. And quite a few much smaller. I have a new 2-meter ship that uses Dymond D-60s to drive the flaperons. I have two JR servos (survivors of an industrial application) driving the rudder and elevator, but both would be classed as "micro".

I am contemplating a rudder/elevator 2-meter glider as my next build project, and plan on using two more D-60s.

Yours, Greg

[egianello]

THANKS guys!
That was what I guessed... I`ll try the JR 375`s
They are the best torque/weight ratio I`ve seen.

Emilio.

PS: Take a look at the sailplanes I`m thinking of, in the link:

http://www.flickr.com/photos/motoveleros/sets/72157607350714039/show/

This is the class "estandar" in Argentina, which is intended for 3 cannel sailplanes from 2 to 2,6 mts. wingspan.

[Phoebusflyer]

egianello, thanks for the link. Enjoyed checking out all the planes and folks flying. Would love to come to Argentina some day. You guys have a great place to fly.
Buenos tardes,
Allen

[AndyTheLegend]

I'm using an HS-65HB on my Bird of Time stab. , and an HS-82MG on the rudder. More than enough. I would think 30 is fine.

Andy

[glidermang]

egianello:

Great pictures! Great flying site!

I got to go to Peru a few years ago, and I loved it. We flew over the Nazca Lines, and my pilot was one of the most skilled I have ever flown with.

I have got to get down there some day.

Yours, Greg