Servo torque requirements

[Helibelly]

Hi, I see that Readyheli make spacers so one can use 9650 servos for the Hurricane, and it is has been suggested that Gaui will also be making spacers for smaller servos. I wonder how much torque is really required for the cyclic servos, and if the 9650 sized ones will cope? Perhaps it would only be prudent to use digital ones in the smaller sizes, as their power is greater at small degrees of throw, than an equivalent spec analogue. I ask this as I will be building one soon, and intend to use analogue servos. I would like to make weight savings in as many areas as possible, (Logitech 2100 gyro saves 20g over 401, using a high voltage bec saves the weight of a receiver pack etc.), but although the heli will only be used for sport flying, and the smaller servos would obviously be lighter, I worry about wheather they would be up to the job or not. Any feedback is of course welcome, thanks, Eric.

[Rotorworkz]

I fly a 50 size heli on mini servos so yes a sub 30 size heli no sweat at all check these adapters out

http://www.espritmodel.com/index.asp?PageAction=VIEWPROD&ProdID=6287

Charley







Hi, I see that Readyheli make spacers so one can use 9650 servos for the Hurricane, and it is has been suggested that Gaui will also be making spacers for smaller servos. I wonder how much torque is really required for the cyclic servos, and if the 9650 sized ones will cope? Perhaps it would only be prudent to use digital ones in the smaller sizes, as their power is greater at small degrees of throw, than an equivalent spec analogue. I ask this as I will be building one soon, and intend to use analogue servos. I would like to make weight savings in as many areas as possible, (Logitech 2100 gyro saves 20g over 401, using a high voltage bec saves the weight of a receiver pack etc.), but although the heli will only be used for sport flying, and the smaller servos would obviously be lighter, I worry about wheather they would be up to the job or not. Any feedback is of course welcome, thanks, Eric.

[MarkM1]

To save weight, I installed the Futaba S9257 mini high speed digital servo with spacer on my 550 tail. May eventually go with S9650's for cyclic.

Mark

[Helibelly]

Thanks guys, just the info I needed to know, good link too.
Eric.