25
GOAL:
Set up a fairly rapid servo (such as S9402)
on a nitro off-road vehicle, while using LV2.
(If using LV3, select ABS from menu 1.)
(If using LV1, first change level selection.
See p. 12.)
Desired settings:
Fairly mild return (ABP) 30%
Use ABS if brakes are applied for more
than approx. 1/4 second (DLY): 10%
Pulse quickly (CYCL): 5-7
Use ABS only if braking hard: TGP: 70%
Leave proportion of brake on to brake off
even (DUTY): 0
Leave steering mix off (STM): 0
View onscreen demonstration of braking
and make adjustments as needed.
Fine tuning:
Where next:
STEPS:
Open and select menu 1.
Select ABS.
Make ABS active.
Set rate of return to 30% (ABP).
Delay ABS coming on to 10% of the
maximum available delay (DLY).
Decrease the cycle value to increase the
cycle rate (CYCL).
Set the trigger position where ABS
becomes effective to 70% (TGP).
Leave the difference in brake-on to brake-
off in each cycle to 0 (DUTY).
Allow ABS to work whether vehicle is
turning or not (STM).
View ABS working within the function on
screen to confirm proper setup. (Hint: LV3
users can also view braking activity and
all other servo actions on screen using the
SERVO function.)
Close function and menus.
INPUTS:
to 30.
to 10.
to 5.
to 70.
(Leave at 0.)
(Leave at OFF.)
Gradually push the throttle trigger to
approximately half brake. Screen should
still read “MODE: ACT (OFF)”.
Push past 70%. Display now reads “MODE:
ACT (ON)” and you can see how brake
commands will be transmitted to the servo
right on the screen.
If brakes still lock during all stops, analyze the problem, then try:
Increasing ABP so less brake is applied during pulses.
Decreasing DLY so that ABS takes effect more rapidly.
Increasing CYC so the brakes pulse more rapidly, each on/off cycle is shorter.
Decrease the TGP so ABS takes over with less brake application.
Decreasing DTY so that brake off time is longer than brake on.
If brakes lock in turns but are not enough on straights:
Set STM so ABS functions only when turning (ex: E50).
NOTE: All of these functions interact with the throttle servo as well and are all inter-
related. Adjusting any one may affect the performance of the others, as described in
Interactions for each function.
Adjust the throttle servo’s overall speed (TH-SPEED): See p. 23.
Adjust throttle exponential (TH-EXP): See p. 20.
Adjust throttle servo’s response only immediately around neutral to correct for nitro
engine’s lag due to linkage setup (TH-ACCEL): See p. 26.
Set up smooth acceleration off of the start or engine cut (AT-START): See p. 28.
Set up a high idle for starting/racing, and keep a normal idle to keep the car sitting still
on start line (IDLE-UP): See p. 27.
Adjust brake mixing for separate front/rear brakes (BRAKE-MIX) (LV3): See p. 42.
