RE: Rotor Hub Dimensions
Jay - You ask what size servos I am using for pitch & roll. Well, nothing special, my largest aircraft uses Futaba FP-S3001 servos, these have an output torque of 42 oz/in. This I understand is not powerful - but they do the job fine with rapid response to control input (me waggling the sticks!). My planes are fairly light, the largest of 56 inch disc diameter (OS FP40 motor) weighs 3lb 12oz which gives a disc loading of 3 1/2 oz./ sq ft. Maybe this enables servos of modest power to be satisfactory.
Perhaps others reading this might like to give their comments on the subject of adequate servo power. Also - there was comment a while back on size of batteries, the thought being that constantly the pitch servo is working, fighting against aerodynamic forces trying to tilt the rotor back, and thus draining the battery. I am using ordinary 600 mah battery, no problems but I generally do not fly for extended periods of time at a session. Any comments anybody?
Colin