COBRA
Silent control
Connect the Cobra servo plug into your receiver the correct way around (black to nega-
tive) on the following pins:
OMNI
-
ESC pins, Rx102
-
Ch.1 pins, Spektrum
-
ELEV, Planet
-
ELEV, 27 & 40mHz
-
Ch.2
POWER CURVE SETTING
The Cobra has three power curves which can
easily be set by the user.
1.
Standard straight line response to the regulator.
2.
Slow start, and a more rapid rise at higher power up
to full power.
3.
Straight line up to half power for shunting
.
To set the power curve:
1.
With everything switched on and settled, with the regulator in the off posi-
tion, observe the Cobra. It will be flashing in groups of one, two or three
flashes.
2.
To change the setting, press and hold the set
-
up button until the LED stays
on constantly.
3.
Now release the button and the setting will change to the next curve. The
Cobra will again flash in groups of 1, 2 or 3 flashes to indicate the new curve
selected. For example, if the Cobra was initially on curve 2 and you want to
select curve 1, then steps 2 and 3 will have to be repeated twice to get the
power curve back onto setting 1.
OPERATING THE MODEL
Power up the transmitter, THEN the model. Wait 3 seconds for the controller to settle. The
locomotive should respond smoothly to your movement of the regulator control; the further
you go, the faster it goes. Same for reverse.
POWER PROTECTOR
-
If you have turned on the handset with the regulator away from
the off position, the Cobra will not give you power until you have returned the regulator to
off, then there is a one second delay.
If you find that the control is too abrupt or too sluggish, then you can adjust the
power
curve
on the Cobra as shown above.
The Cobra Electronic speed controller is part of the Fosworks Plug ’n’ Play Radio Con-
trol System. Red JST plugs (BEC Plugs) are employed to create a super simple way to
Radio Control your loco. The smaller Male plug gives power to the larger Female plug at
each stage. No soldering is required.
Above is the full circuit diagram for a sound card connected to a Cobra. Also
shown are two, Two Way Switcher units which activate the auxiliary sound
effects on a sound card, and other items which make up the complete system
for fitting into a loco.
Below is the circuit diagram for the OMNI system that does not require two
way switcher units.
Everything shown is available from FOSWORKS. If you buy a complete sys-
tem from us it will be assembled and tested ready for you to install in your lo-
co.
Cobra with a standard Receiver and Two way switcher units to
activate sound effects on the sound card
Cobra with an OMNI Rx
-
2 Receiver. Note direct connection from
the RX to the sound card to activate sound effects
1
2
3
