HUNTING THE ELUSIVE SERVO

Ok, I've got a recommendation on servo power @ 25kg. Do they change power with motor upgrade or gearing-the latter would change reaction time I'd think.  Once again there are choices. It would seem 90 degrees of movement is more than enough as the rudder should have only 70 degrees of movement range. I imagine you can either adjust a servo's limits or change lever ratios. Do they have any internal brain capacity or simply act on tx lever movement? As you see every step is learning for me.

You can buy servos with different strengths, but they are not upgradeable. There are two ways of adjusting the throw - by use of the transmitter if it has the facility, or by changes to the linkage. Servos arms usually have a series of holes, and if you make your tiller arm the same then by moving the linkage you can adjust the throw.
I believe you can buy digital servos which are programmable, but you don't need that complication.

Barrie

Whilst Barrie is correct in what he says , if its a must have or you need to speed up or slow down the action of whatever Servo you can buy a Servo Morph which will do exactly that .

Visit Component-shop.co.uk and look in the ACTion section and you will find the morph in there , they also sell Servo's