Originally Posted by takeda
Can Anyone explain to me how the ackerman positions (A to D) work in the RS?
The size and geometry of the servo saver forces the inside wheel to increase its turning angle at a greater rate than the outside wheel, as the servo turns either way from center.
The rate of the increase, called Ackerman effect, can be changed by the angle of the steering rods connecting the servo saver to the steering blocks. The straighter the rods are in relation to each other, the more Ackerman effect will be applied to the inside wheel.
The goal in tuning ackerman is to get the car to keep a consistent steering arc after going from off-power to on-power, while not allowing the front inside wheel to be turned too much and drag through the corners instead of rolling through them.
If the car steers well off-power but pushes on-power, then use more Ackermann effect and decrease your transmitter EPA/dual rate.
If the car steers well on-power and pushes off-power, then use less Ackermann effect and increase your transmitter EPA/dual rate.
The angle of the steering rods can be changed by moving the steering rods inner mount position on the servo saver, or outer mount position on the steering blocks.
1. Inner Ackermann Position (servo saver) Changing the forward/rearward position of the servo saver has the greatest Ackermann effect
Position more forward less Ackermann effect (steering rods more angled)
Position more rearward the greatest Ackermann effect (steering rods straighter)
2. Outer Ackermann Position (steering blocks) Changing positions on the steering blocks is used to fine tune the Ackermann effect
Position more forward more Ackermann effect (steering rods straighter)
Position more rearward less Ackermann effect (steering rods more angled)
NOTE: It is recommended to use more Ackermann effect in low-to-medium grip conditions and less Ackermann effect in medium-to-high grip conditions.
Hope this helps