ljhmc

The following are the needs for flying my Starship Enterprise. Because of the difference of this platform it has been decided to enhance some capabilities for a crowd pleaser.

I first want the turning of the Starship to be accomplished by using Ducted Fans. There is a GWS EDF75 Ducted Fan located in each nacell. There is one servo used for the nose wheel. Because of this I plan on using 2 P-Mixes to accomplish the turning while in the air. The second part of this is the use of the Ducted Fans at full power to taxi at the end of a flight and while the main power supply is off (O.S. 91 4 Stroke). Because of this there needs to be a switch to turn the Rudder/Nacells on and off.

Because of the use of the Ducted Fans as full power while on the ground there needs to be another switch to turn the Ducted Fans on and off when using the throttel mixes 3 and 4.

Now that I have set the premis the following is how I have setup 4 P-Mixes to do the items I need. This is all on a Futaba 9C. All Aux channels have been set to null. Channel #7 (Aux1) will be set for the right Nacell and Channel #5 (Gear) will be set for the left Nacell. I am using a Futaba 9C

Rudder mixes:

P-Mix 1
MIX = on
Master = Rudder
Slave = Gear
Link & Trim = off
Switch = B
Position = down
Rate: <0% >-100%
Offset = 0%

P-Mix 2
MIX = on
Master = Rudder
Slave = Aux1
Link & Trim = off
Switch = B
Position = down
Rate: <+100% >0%
Offset = 0%

With switch B off the Rudder should only operate the nose wheel. No power to the fans should be present. With switch B on the Rudder stick will power up the right Ducted Fan #7 (Aux1) when turning left. When the rudder is used to turn right the left Ducted Fan #5 (Gear) will be powered up


Throttel mixes:

P-Mix 3
MIX = on
Master = Throttel
Slave = Gear
Link & Trim = off
Switch = A
Position = down
Rate: (down) 0% (up) +100%
Offset = 0%

P-Mix 4
MIX = on
Master = Throttel
Slave = Aux1
Link & Trim = off
Switch = A
Position = down
Rate: (down) 0% (up) +100%
Offset = 0%

With switch A off the throttel stick should only operate the O.S. 91 4 Stroke.
With switch A on the throttel stick should operate both Ducted Fans. Up for power and down to turn them off. This would be use at the end of a flight and to taxi back to the pits.


This all sounds like it should work, except with switch B (Rudder/fan mix) I have #5 on any time the transmitter is on no matter if the switch is on or off. The throttel mixes work.
Any help in this problem would be VERY VERY helpful. A few pictures to help you understand

Thanks

dirtybird

My Feedback: (5)

I am afraid you are on your own with this one. I sure won't take the time to try and figure out what you are doing let alone try to fix it.

mglavin

My Feedback: (31)

Did you try reversing the rate percentage of channel 5? You show +100%, try -100%.

I assume your driving Electronic speed controls?

Neat project....

ljhmc

I'v done it. The ESC's are IC350's. Just trying to have the fans off until I move the rudder stick left or right to run the fan for the turn only.

mglavin

My Feedback: (31)

Have you checked and or changed the percentages in each screen, channel 5 and the p-mix screens?

ljhmc

When I change one screen % the system that will work stops working.

mglavin

My Feedback: (31)

I really suspect the problem is related to percentages as noted above. Have you asked in the RCU Futaba Support Forum?