Futaba 4GRS - Manual (Page 54)

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Warning
End Point Adjuster "END POINT" (EPA)
(All channel)
Use this when performing left and right end point adjustments, throttle high side/
brake side operation amount adjustment, channel 3 and channel 4 servo up side/
down side operation amount adjustment during linkage.
- Correct the maximum steering angle for left and right steering angles when there
is a difference in the turning radius due to the characteristics, etc. of the vehicle.
The EPA function basically determines the maximum steering angle of each channel.
The functions shown below may have been adjusted or the operating range set by EPA
function may be exceeded. Check the linkage each time the following functions are
adjusted.
- Sub trim (all channels) .................................. P53
- Program mixing slave side (all channels) .....P78
- Idle up (throttle) ............................................P89
- Throttle off, Engine cut (throttle) .................. P91
- Throttle acceration (throttle) .........................P65
Maximum steering angle
ATL trim allows adjustment of the brake side operation amount during operation.
Therefore, when the operating angle is adjusted with throttle EPA, ATL trim must also
be taken into account.
ATL trim
End Point Adjuster "END POINT"
Operate each servo over its full stroke and be sure
the linkage does not bind or is not loose.
The continuous application of excessive force to a servo may
cause damage and excessive battery drain.
Adjust the throttle servo so that excessive force is not applied when the engine carburetor is fully
open, fully closed, and the brakes are applied fully.
If the brakes overheat while running, their ability to function properly decreases. Before running,
adjust the suitable maximum servo travel so that excessive force is not applied even when the servo
travel is increased while running.
Adjust the steering servo so that excessive
force is not applied to the servo by the chas-
sis at maximum servo travel.
Decide the EPA value at the
contact point.
Caution!
A whining noise indicates that the
steering servo is improperly set.