Martyn K Posted June 27, 2013 Share Posted June 27, 2013 Has anyone used these servos below and can comment on their suitability for primary functions in a 60 sized classic aerobatic model? Spec from GiantShark as follows: Specification Length (mm) 38.4 Width (mm) 18.7 Height (mm) 34.7 Weight (g) 33 Operating Speed 0.17sec/60 degrees(4.8V) 0.14sec/60 degrees (6V) Stall Torque 3.2kg/cm (4.8V) 4.2kg/cm (6V) Operating Voltage 4.8-6v Thanks Martyn Edited By Martyn K on 27/06/2013 15:08:56 Quote Link to comment Share on other sites More sharing options...
Bob Cotsford Posted June 28, 2013 Share Posted June 28, 2013 the figures look right, similar to Futaba 300x units, and you don't need much surface movement except on rudder (for spins, stall turns flick etc.). For a ballistic type classic I'd probably look closer to 5kg for elevator and rudder but that's just me being cautious, for more sedate classics 3kg should be plenty. The instructions for the Mustfire I'm building talk about being wary of enlarging the rudder and elevators unless you have servos with 2 or 3 lbs of thrust available! Wonder what a Bonner Duramite put out? Quote Link to comment Share on other sites More sharing options...
Martyn K Posted June 28, 2013 Author Share Posted June 28, 2013 Cheers Bob They seem quite good value for digital servoes with ball raced outputs. I'll grab a couple and see what they look like. I'll report back in due course - probably on the Magic build thread. BW Martyn Quote Link to comment Share on other sites More sharing options...
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