Quote:
Originally posted by ripper7777777
Okay first off there are two differnet cars, a two wire pot and a three wire pot, the two wire pot seems to be limited to the white bricks only, but the three wire pots seem to be in either. On the three wire pots there is a wire bridging the middle wire and the right wire, what we did was remove the bridge and then remove the flat gear, then center the pot and adjust the trim till we have 7 steps in either direction, then put the flat gear back in the center.
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Are you refering to the steering pot (as in potentiometer) in the controller, or the steering servo (steering motor) that's in the chassis? As far as pots (such as the steering in the controller), the reason for shunting one side of the pot with the middle leg is to prevent problems due to electrical and RF noise.
As far as the steering servo, I'm not sure. AFAIK, most RC servos require three wires in order for their associated circuitry to funtion properly. The middle wire is generally used for the controlling circuitry, so that the controlling portion of the receiver "knows" where the position of the servo is at any given moment, and where relative center is for the servo.
Note that the last paragraph is going from memory, back from my 1/10 scale RC car and aircraft days, so I might be way off.