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6 — VEHICLE PERFORMANCE ADJUSTMENT

pg. 35

Return to TOC 1212 & 1212P Manual - Sep 2019

Step 8: Fine-tuning the vehicle’s response smoothness

ree additional parameters—Gear Soen, So Start, and Tremor Suppression—are available for

soening and smoothing vehicle response. In most cases, these functions can be used to provide

smooth vehicle operation while still maintaining a high degree of responsiveness.

Gear Soen and So Start are in the Speed menu; Tremor Suppression is in the rottle menu.

Gear Soften and Soft Start

ese two parameters can be set from 0–100%, with 100% providing a great deal of soening and

0% eliminating the function. ey have by far the most noticeable eect on older, worn transaxles.

a. Make sure Gear Soen and So Start are set to 0%.

b. While driving at both high and low speeds, release the throttle to neutral and then reapply

it before coming to a complete stop. Notice how the transaxle gears bump as you reapply the

throttle.

c. Change the Gear Soen setting from 0% to 100% and repeat the same exercise. Notice how the

slop transition is soened, at the expense of a small bit of nonlinearity in the acceleration rate.

d. Adjust Gear Soen until you ﬁnd a setting you like, noting that you probably won’t notice much

of a dierence if you’re using a brand new, tight transaxle. Some users prefer a soened feel,

while others prefer this parameter set to zero because they want complete linearity in response.

In setting this parameter, you also may want to take into consideration that soened slack take-

up is easier on the transaxle gears and may extend the transaxle operating life.

e. So Start is the same as Gear Soen, except it applies to accelerations from zero speed. Note that

you’ll feel a transaxle bump only if the gears are meshed in the opposite direction when torque is

applied, so you may need to nudge the vehicle backwards against the brake when experimenting

with this parameter. We recommend relatively small values for the So Start parameter (typically

< 40%) to avoid excessive delay from a stop. Having separate parameters for the so start and gear

soen functions allows you to set the So Start parameter lower than the Gear Soen parameter.

Setting the two parameters the same in eect collapses them into a single parameter.

Curtis Instruments 1212P User Manual

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