Originally posted by Sprink
Mglavin, servo resolution does not affect torque, it is that they are affected by the same thing.
If say your tranny has max ATV of 100%, and the servo moves 60 degrees ath that 100% setting, then reduing the ATV to 50% will mean that you only get 30 degrees travel out of the servo.
If you then set up the servo and control horn links to give the same deflection at the control surface as before you get the following:
a) 50% resolution: only half of the servo movement giving the same throw means you are missing the possible resolution of the other 50% you are not using.
b) 50% less torque: to get the same movement at the control surface, you will move from say 1:1 relationship to a 1:0.5 relationship. If you originally had 100oz-in, you will now only have 50oz-in at the control surface.
So, they do not relate to each other, but derive from the same source, which gives a misleading link between them.
I agree that 50% less ATV will effectively present itself as less overall travel resolution as related to TX stick movement.
TORQUE in this case is a constant and is unchanged by the radial travel arc of the servo. A servo that develops 100oz-in of TORQUE always develops a 100oz-in of TORQUE. It matters not how long the arm is or how far the arm travels.
Torque is calculated by multiplying the arm length by the known FORCE. F(force) x L(length) = T(torque)
Servo TORQUE is greatest when the servo motor is stalled, holding a position.
The quantitative measure of the tendency of a FORCE to cause or change rotational motion is called TORQUE.
Torque (also called a moment) is the term we use when we talk about forces that act in a rotational manner. You apply a torque or moment when you turn a dial, flip a light switch, drill a hole or tighten a screw or bolt.