Courtesy of Rob Stump (edited by Kurt with TJPro setup)
Setting up the Throttle Jockey with the 8UHPS (Super)
The following instructions take into consideration that you already have
the knowledge and/or skills necessary to set up your throttle linkages and
curves correctly and have already done so.
Make sure that during all phases of TJ setup
that the receiver battery has sufficient voltage. On the bench, lower than
3.56 volts will compromise TJ setup.
Before installing the TJ set up your heli
normally with the pitch and throttle curves you would use under normal
circumstances. (A -10, 0, +10 pitch setting was used in this scenario with a
throttle curve set to hold fairly constant RPM throughout the pitch range).
This will ensure that should the sensor fail and the TJ reverts to
transmitter throttle curves that the heli still behaves normally until a
landing can be accomplished. Also ensure that this setup allows the heli to
hover at your desired stick position (1/2 or ² as preferred). The engine
should be run-in and correct mixtures set.
For the above setup, ensure that the throttle
linkage is set up so that throttle ATVās are equal (low and high stick
position) and as close to 100/100 as possible. This ensures maximum number
of steps for the TJ to use within the throttleās range to give the most
accurate control possible.
Set the idle in the throttle hold menu as
desired so that the engine idles appropriately and disengages the clutch
when doing autos.
For a PCM setup, set throttle fail safe as
desired (recommended position is idle).
Install the TJ and ensure that all the plugs are
installed as per the printed card on the TJ or the instructions.
During installation, rotate the fan and check
the red LED on the TJ. At each pass of the magnet (magnetic sensor) or
reflective surface (optical sensor) the red LED should glow. If using the
optical sensor and using the black tape on silver CNC fans the LED will
remain lit until it senses the black tape. If it does not, adjust sensor
position to achieve a reliable reading at every rotation.
NOTE: When using the optional optical
sensor black and silver tape is provided. Cut the tape to an approximately
3/8" wide and deep enough so that it goes all the way out to the edge of the
fan. Now attach to underside of the fan and seal the edges with CA to
prevent it from coming off. Ensure that the sensor pick-up is placed the
appropriate distance from the center of the fan hub. (Approximately 23 mm
for 30/50 sized machines and approximately 28mm for 60/70/80/90 sized
machines. This is critical!) The silver tape is for use with black or
plastic fans while the black tape is for use with silver CNC fans.
In this scenario the TJ will be set up on the
8Uās Gov function on aux channel 7 using a 3-position switch on the
transmitter. (Switch "C") I prefer this over the Idle-up switch because it
gives me a way to isolate the TJ from the system if needed.
The following steps will take you through the
menus in the 8UHPS step by step:
Switch on the TX.
the throttle stick all the way down.
the throttle trim to its lowest position.
4.) Ensure that the ch 7 ATVās are set to 90/90 (Basic menu).
5.) Inhibit the "Govrpm" function (Advanced menu). NOTE: before you fly you
will re-enable the "Govrpm" function
"UP" to 100 to start. This is where you will adjust for RPM setting 1.
"CENTER" to 50. This disables TJ at center switch "C" position. You will
not change this value again.
"DOWN" to 0 to start. This is where you will adjust for RPM setting 2.
"HOLD CH" to CH7.
"HOLD lmt" to +.
"SW" to SW-C. This enables separate switch control of TJ.
Now it is time to calibrate your TJ
your Transmitter still on, turn on your receiver and within the first two
seconds (even before gyro initialization!) toggle switch "C" from "UP" position, all the way to "DOWN" and then wait 2 seconds. The
green LED on TJ should start flashing. If it does not illuminate, turn off the
Rx and try again. (Not too fast)
Once the light is on you are in "Calibration" mode.
13.) Advance the throttle stick all the way up and then all the way down again a
couple of times(you should get a yellow LED at high stick and green at low stick). This loads the range of motion into the TJ.
14.) At low throttle, you
may now toggle switch "C" again until the green LED extinguishes. Calibration is complete :)
For ThrottleMax Calibration, exit at High Stick(Yellow LED)for Limiter mode and Low stick for governor mode(Green LED)
15.) Place switch "C" to "CENTER".
it is time to go back and re-enable the "Govrpm" function in the 8UHPS.
17.) Return your throttle trim to where it normally resides.
Perform the following system check before
starting the engine:
1. Set switch "C" to the center position and move the throttle from idle to
full. The green LED should stay off the whole way. This is because the
middle position of switch "C" disables the TJ and in this position you are
therefore flying the heli in the ungoverned mode.
Move the throttle back to idle and flip
switch "C" to the "UP" position. Advance the throttle and at the point
where the throttle curve hits 20% the green LED should come on indicating
that the TJ is in governing mode from that throttle position and up.
While you are either in switch "C" position "UP" or "DOWN" switch your
Idle-up from "Norm" to "Idle-up 1" or "Idle-up 2" and advance the throttle
all the way up and down. The green LED should remain illuminated at all
times indicating the TJ has control over throttle.
verifying that TJ activates on the appropriate switch commands try switching
the "Throttle Hold" to perform a simulated auto. The green LED should
extinguish in all situations tested previously indicating that TJ disengages
for auto-rotations or emergency situations.
to normal mode and advance the throttle again. Switch off the TX and the
throttle should move to the fail-safe position set up earlier.
6. Adjust switch c "up" and "down" values to 55% . Leave "center" at 50%.
Starting the engine:
Move the heli to a safe location for TJ RPM setup.
Start the heli and adjust throttle trim to achieve a satisfactory idle.
Open the 8UHPS "Govrpm" function and go to "UP"
or "DOWN". (Advanced menu)
Move switch "C" to the "UP" or "DOWN". (Both
positions previously set at 55)
Stand clear of the heli and slowly spool it up
in "Normal" mode. You will notice a point where the heliās RPM increases
quickly and plateaus. This is occurring because the RPM has reached the
governing threshold and the TJ is bringing up RPM to the target level.
Using the values in this scenario mine kicked in just below half stick.
Bring the throttle up a little more to ensure
that the unit is truly in governing range, the RPM should remain constant.
You can just slowly advance the EPA value from 55% until you get your
desired head speed. I set mine while at 0 pitch still sitting on the
ground. I set the low RPM first, or you can use the ATV calculator on this site.
Once you have set your RPM 1 simply throttle down below 20% so that
TJ disengages. Now go into your "Govrpm" function and set your
other value to 68. (or whatever value you arrived at to get your lower RPM
setting) This will ensure no surprises when you switch from your initial
RPM setting to your secondary RPM setting)
Throttle back up until TJ engages again. Now you may switch past "CENTER"
to the other RPM which should be the same as RPM 1 which was previously
set to 68(or your value) as well. Now simply increase the "Govrpm" value
to get the desired head speed.
After completing set up you may now go to
"Idle-up 1" or "2" and proceed with flying. The TJ should maintain the head
speed you set in the desired position of switch "C" and should not drop at
any time unless there is a malfunction.
The values and set up procedures used in this
scenario yielded the following results:
Low switch position (or Idle2 if SW-E used) 79 EPA in "Govrpm" function gave 1850 RPM
Center switch position (or NORM mode) 50 EPA in "Govrpm" function turns off TJ
Top switch position (or idle2) 68 EPA in "Govrpm" function gave 1650 RPM
Individual setups and numbers may vary, so it is best to start with a low
channel 7 ATV and work UP. This ensures that the RPM is not too high when
engaging the switch settings initially.
You can select SW-E now in the GOV menu if you want it to follow your flight modes. You will still use a value of 50% for disabling the TJ. It is common to have 50% selected for NORM flight mode switch position(TJ Disabled)and the values you determined earlier for the Idle1 and Idle2 switch positions.
know it's long but you can't go wrong if you follow these steps closely.