Heli-Max HMXM1500 - Manual (Page 3)

Set Up And Test The Governor
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1. If you haven’t already done so, turn off your Tx and Rx.
Now, turn on your Tx, then the Rx.
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2A. If you are using an adjustable dial on your transmitter to
adjust the rotor rpm, turn the dial to the position where the rpm
will be minimum (counter clockwise).
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2B. If you are using a two position switch to select between a
high and a low rpm, flip the switch to the position that will be
used for the lower of the two rpm.
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3. Pass the sensor over one of the magnets three times. The
LED on the governor will glow each time. If the LED does not
glow, you have your magnet upside down. Flip the magnet
over, reset your radio, and return to step 1.
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4. Pass the sensor over the magnet a 4th time. The throttle
servo should move the carburetor to “idle” position. If the
throttle servo moves to full throttle, reverse the direction of your
servo using the reverse jumper on the governor. Turn your Rx
switch off, move the reverse jumper to the servo reverse
position, then reset the governor by turning it back on and
passing the sensor over the magnet 4 times. On the 4th time
the throttle servo should move to idle.
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5. Pass the sensor over the magnet a 5th time. The throttle
servo will move the carburetor to full throttle.
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6. Pass the sensor over the magnet a 6th time. The throttle
servo will move the carburetor to engine off.
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7. Repeating steps 1 through 6 as many times as necessary,
adjust your throttle linkage (do not use your ATV’s) so your
carburetor is fully open and fully closed when the governor
moves the throttle servo after passing the sensor over the
magnet the 5th and 6th time.
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8A. If you are using a dial to adjust the rpm, turn the dial to
its maximum position.
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8B. If you are using a switch to select a high and low rpm,
flip the switch to the position that will provide the higher of the
two rpm.
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9. Pass the sensor over the magnet a 7th time. If the LED
glows, reverse the channel in your transmitter that operates the
dial or switch you are using to adjust the rpm, then reset the
governor. When you get to step 9 and the LED flashes, go to
the next step.
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10A. If you are using a dial to adjust the rpm, turn the dial to
its minimum position.
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10B. If you are using a switch to switch between high and
low rpm, flip the switch to the position that will provide the low
rpm. The LED will glow.
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11. Turn the dial or your rpm select switch to the high rpm
setting. The LED will go out. At this point the governor is
activated and will maintain constant rotor rpm.
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12. Turn the dial or your rpm select switch to the low rpm
setting. The LED will glow. Now the governor is deactivated.
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13A. If you are using a dial, slowly increase the dial until the
LED goes out. At the point when the LED goes out, the
governor is activated. From this point on, rotor rpm will increase
as you turn up the dial.
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13B. Decrease the ATV on the side of the rpm select switch
that controls the lower of the two rpm positions until the LED
goes out. Note the ATV percentage. At this point the governor is
active and is set at the lowest possible rpm you can use
(900 rpm).
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14A. Slowly decrease the dial until the LED glows. The
governor is now inactive.
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14B. Slowly increase the same ATV you adjusted in step
13B until the LED glows. The governor is now inactive. When
it’s time to fly your helicopter and set the hovering rpm, set your
helicopter on the ground and adjust the ATV until you reach the
rpm you desire.
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15. Move your throttle stick to full throttle. Pass the sensor
over the magnet an 8th time. The LED should flash.
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16. Move the throttle stick to idle. The LED will glow. Now
the governor is inactive.
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17. Move the throttle stick back to full throttle. While you do
this, note the position of the throttle stick when the LED goes
off. This is the point at which the governor “turns on” and
cannot be adjusted.
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18. Now that the governor is set up, activate your other pitch
curves (Idle up 1, Idle up 2). Lower the throttle stick. Make sure
the LED remains off so the governor will not turn off when you
lower the throttle stick while performing aerobatics (or hovering
inverted).
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19. If the LED remains off, your governor is set up correctly
and you are finished. If the LED glows when you lower the
throttle stick while you are in your aerobatic pitch curves (Idle
up 1, Idle up 2), raise your throttle curves so the LED remains
off. Now you are finished setting up the governor.
You must adjust your linkage mechanically because the
throttle servo receives its signal from the governor, not your
transmitter. This is a fail safe feature. Do not use your ATV’s
to adjust the throttle lever settings.
In the flow chart, whenever you see the term “Reset your
governor,” it means you should turn off your receiver, return
to step 1 and follow the flow chart until you return to the step
that instructed you to reset your governor.
Refer to the flow chart to help you through the steps of
setting up your governor. The steps in the flow chart
correspond to the steps in the following instructions.
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