The right servos for the right plane

[Jenny1]

I am putting together a Great plane Yak 54 .
I have some new servos and would like advice as to if they will stand the test.41 x 40 x 20 x 38 mm Dimensions:
55 g Weight:

107 oz-in Torque @ 4.8V:133 oz-in Torque @ 6.0V:

0.24 sec/60° Speed @ 4.8V:

0.20 sec/60°Speed @ 6.0V:

FEATURES

• 3-Pole Ferrite Motor
• Dual Ball Bearing

A new generation of Hitec servos using our unique MP and Alumite gear train technology have arrived. Featuring our guaranteed un-breakable gear train, the powerful HS-645MG is perfect for those high demand applications requiring a standard sized servo.
The HS-645MG has two ball bearings for fine resolution and a strong three pole motor.


I plane to sport fly this plane and I think the three D stuff is beyond my age group . If I go higher torque I will have to go large servos and would rather not.
So what do you think

[3D Meatshield]

If you're building the 27%er (1.60 glow/43cc gas) sized Yak, those exceed- but barely so- the recommended specs. It calls for a minimum of 98in.oz. If you run them 6v instead of 4.8v you'll be where you need to be, plus a margin of error on the good side. Yeah, they'll do just fine.

[smokin]

use the 6v batt for sure.

[Test005]

For whatever it's worth, I have the 645-MG all around in my GP Cap232 and it's fine... People say they're slow, but so am I so we're pretty locked in

[Aeromodeler]

I'm setting mine up with the Futaba s3305's which is what looks like they're using in the manual to build it. I think they will be more than sufficient with a 6v battery and at $35.00 each, they won't break the bank either.