FUTABA 14 or 12 Channel Radios (Setup Using a SkyTach..)
Before activating the TJ, set up your heli normally with the pitch and throttle curves you would use under normal circumstances. 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 ¾ as preferred) for each flight mode. The engine should be run-in and correct mixtures set.
Do not activate the Gov function at this time.....Use any of the following channels: 4, 5, 6, 10, 11, or 12 and plug the AUX lead of the TJ into the one selected and assign that channel as any one of the many AUX designations. (PLEASE NOTE: For FASST systems it will re-assign GOV to channel 10 and put the throttle on 6 which works great. It groups channel packets 1-4, 5-8 and 9-12. Temporarily rename the GOV channel as an AUX channel. There are about 4 different AUX names and it does not matter which one you select).
You can do this under the "FUNCTION" menu.
Also select a switch to "control" that channel. Do not select E right now. use A,B,C, or D
Verify under "SERVO MONITOR" that the channel is going from high to low (+100 to -100) while toggling the selected switch.
Make sure a linear curve is set for normal flight mode(0%-100%).
Have throttle ATV's as close to 100/100 as possible.
With the throttle stick low, turn on RX, after the quick flash of the yellow and red LED, quickly toggle the selected switch from position 1 to position 3 and wait 3 seconds.
Green LED will flash rapidly showing calibration mode is on, move throttle stick high(yellow LED) then throttle stick low(green LED). Toggle switch back to position 1 and LED will go out.
For ThrottleMax Calibration, exit at High Stick(Yellow LED)for Limiter mode and Low stick for governor mode(Green LED)
You can now re-activate and re-assign the GOV 2 function.
Now put the throttle curve points back to what they were before and select sw(E) for the GOVENOR channel under "FUNCTION" and under "control" column.
Go to GOVERNOR 2 screen under MODEL MENU.
For RATE1, change ACT to ON instead of INH and change GROUP to SNGL and select sw(E) for all Flight modes.(must make these changes after selecting each flight mode with sw(E) and also the switch for Throttle hold.
Verify that 50% on RATE(default value) will keep the green LED off for each flight mode with the throttle above 25%.
Any value above 52% will enable the TJ.
We are now going to determine values to enter for specific head speeds using a SkyTach.
For this example we are using a ¾ stick hover(+10-0--10), which puts zero degrees pitch at ½ stick and have selected switch E on GOV screen for flight mode control.
It is strongly recommended to have a helper on this, but it can be done alone. Just be very careful and do not attempt it alone if it’s windy or if it just sounds crazy to you.
Go to norm flight mode throttle curve screen and select mid-point of throttle curve.
Using SkyTach, set tach display to read slightly higher than the highest head speed you want the TJ to limit. (1850 for this example)
Select THR curve screen under "Model Menu" and while in normal mode select throttle mid-point.
Stand away from heli and spool up to 0 degree pitch setting. (1/2 stick)
Slowly increase mid-point throttle percentage until Tach and head speed match. (blades will appear to have stopped when you reach 1850 rpm)
Lower throttle stick back to idle.
Now adjust Tach display to read the actual head speed you want TJ to limit. (1800)
On GOVENOR screen adjust RATE(Normal Flight Mode switch position) value to 60% to enable TJ.
Now spool heli up again to zero degrees (1/2 stick), the head speed should be significantly lowered now because TJ is being enabled. (setting for RATE is above 50%)
Slowly increase the RATE value from 60% until blades appear stopped (viewing through SkyTach) and that will be the value required for an 1800 rpm limit.
You can now enter that value into either IDLE-UP1 or IDLE-UP2 for the highest head speed setting in this example (Normally IDLE-UP2). Enter "condition hold" to enter those values.
Now set SkyTach for second speed (lower) and repeat above steps but just slowly decrease the percentage you have already for RATE in normal mode.
After this is done, re-enter starting value for Norm throttle curve mid-point and you are done.
Setup for TJPro
Use the above method with the SkyTach but instead of increasing the midpoint of your throttle curve you will re-enter your normal flight mode curve values.
Select the RATE under the GOVENOR Menu. (Normal Mode showing on screen for flight condition.)
Spool heli up to 0 degrees pitch throttle position.
Slowly increase RATE from the 50% setting while in normal mode. You will notice head speed decrease as soon as a value over 53% is reached (this is TJ engaging).
While someone is viewing through tach, turn up RATE value until head speed you set Tach at is reached(Blades appear stopped). This is your high head speed so make note of that value.
Reduce tach display to second head speed desired and then lower RATE value to attain the next lower head speed.
Now you have your values under RATE for the head speed’s you want to maintain. Enter them in to the corresponding flight conditions and go fly.