Recently I got myself 2 pieces of V-Tail mixer. It is from SHS and it is unbranded.
I did a test to see whether is it possible to use for CCPM 120Degree configuration.
Result:
Yes but not really good. By connecting them up with one channel i/p from V-Tail mixer is then cascaded with the o/p of another mixer. You have to try around to get the correct combination to achieve it. The 3 i/p (2 from one mixer and 1 from another mixer) is then connected to Aileron, Elevator and Pitch channels (Lets call them A, E, and P)
The ATV (or End Point) of A, E and P require to tune down to like less than 50% on both end.
The draw back of such cascading configuration is that the timing or servo travel for all channel maybe almost the same. With that, for 120Degre CCPM, the heli will experiencing collective up/down when u do Elevator movement. The problem may be able to solve by tweaking around the ATV for all A, E and P instead. If not, maybe use "programming mix" instead.
The other disadvantage of using such combination is that the V-Tail mixer that I use somehow not compatible to Futaba GY240 gyro. I suspect the GY240 o/p or i/p frequency is either higher or lower than the standard signal from RX.
You can use the above method as a "poor human" (politically correct term) configuration to control CCPM 120Degre heli.
For CCPM 90Degree heli, it may work better.
(Sorry! No picture to show the connection)
SHornet
I did a test to see whether is it possible to use for CCPM 120Degree configuration.
Result:
Yes but not really good. By connecting them up with one channel i/p from V-Tail mixer is then cascaded with the o/p of another mixer. You have to try around to get the correct combination to achieve it. The 3 i/p (2 from one mixer and 1 from another mixer) is then connected to Aileron, Elevator and Pitch channels (Lets call them A, E, and P)
The ATV (or End Point) of A, E and P require to tune down to like less than 50% on both end.
The draw back of such cascading configuration is that the timing or servo travel for all channel maybe almost the same. With that, for 120Degre CCPM, the heli will experiencing collective up/down when u do Elevator movement. The problem may be able to solve by tweaking around the ATV for all A, E and P instead. If not, maybe use "programming mix" instead.
The other disadvantage of using such combination is that the V-Tail mixer that I use somehow not compatible to Futaba GY240 gyro. I suspect the GY240 o/p or i/p frequency is either higher or lower than the standard signal from RX.
You can use the above method as a "poor human" (politically correct term) configuration to control CCPM 120Degre heli.
For CCPM 90Degree heli, it may work better.
(Sorry! No picture to show the connection)
SHornet
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