Use a decent quality metal geared servo and obviously avoid crashes as much as possible.
I have used the same Savox 1251 in a 22 since the car's release, there have been plenty of thrills and spills and have never broken the servo or had any issues with it and it's still going strong.
I kept the kit plastic servo horn fitted as a hopeful weak point in the system and have never stripped one either.... i stripped the kit plastic one on a 22T in 3 clean indoor corners of first run with same servo type... just through extra force from bigger wheels!
You should set your end points to be at maximum when the steering hits full lock... or maybe even a couple of mm before to allow wheel force to take any slop into the steering lock stops.
There is no point in having the steering travel end points set beyond lock stops as it cannot physically travel any further and will strain the servo motor... you can hear when a servo is straining by the buzzing noise.
with modern servos they will take a lot of punishment due to higher torque motors and metal gears, but abusing them will lead to a shorter life.
|