Throttle Pot; Standard Potbox; Pots For Twist-Grip Throttles; Standard Throttle Pot, 0-5Kω - Curtis 1204 Manual

Standard
Fig. 10
throttle pot, 0–5k Ω .
Bi-directional
Fig. 11
twist-grip throttle with
10 k Ω center-tapped,
4-terminal pot.
Curtis PMC 1204/1205 Manual
Throttle Pot Wiring
Standard potbox wiring
If the throttle input to the controller is from a Curtis PMC potbox or
footpedal, the wiring is simple: just connect the two wires of the potbox/
footpedal cable to the two push-on terminals of the controller, as shown
in Figure 6. It doesn't matter which wire goes on which terminal. The
wires can be extended as required.
Any suitable potentiometer of 5 kΩ nominal resistance will work
with the standard throttle input of the 1204/1205 controllers. As shown
in Figure 10, connection should be made to the wiper and to one outer
terminal of the pot so that resistance increases as the accelerator is applied.
0–5kΩ POT
FASTER

Pots for twist-grip throttles

Twist grip throttles either twist in only one direction (and are used only
for acceleration), or they twist both ways (and are also used for reversing,
by means of microswitches that select a direction contactor). For twist
grips that twist in only one direction, the controller throttle input can be
from a 5 kΩ pot as shown above in Figure 10.
For twist grips that twist both ways, a pot capable of going from zero
in neutral to 5 kΩ in each direction can be used. A mechanism can be
designed to make a standard pot turn in the same direction regardless of
FASTER
5 kΩ
5 kΩ
FASTER
TO
THROTTLE
INPUT
which direction the twist grip is
turned. Alternately, a 4-terminal,
center-tapped 10 kΩ pot can be
coupled directly to the twist grip,
TO
as shown in Figure 11.
THROTTLE
INPUT
A third method of accom-
modating bi-directional twist grip
throttles uses a standard potenti-
ometer and a controller with a
WIRING
FASTER
TO
THROTTLE
INPUT
14