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Radio System FAQ
How can I have my gear doors open and close automatically before/after my gear and also move more slowly, more scale?
There are a variety of ways to accomplish this challenging setup. The particular approach outlined below takes 2 switches. The momentary on (trainer switch) will be used to open the Gear doors immediately before the Gear is lowered; the Gear switch will lower the Gear, raise the Gear and raise (close) the doors.
We're going to use Throttle delay to make your Gear doors open and close slowly, giving your Gear time to go up/down.
Plug in your servos as follows:
- Throttle servo to channel 8
- Gear servo to channel 5
- Doors servo to channel 3 (Throttle)
First do a Pmix with Gear as Master and Throttle as Slave, set your rates at 100% both ways, keep Link off and Offset at 0. Leave the switch set to Null. Now the channel 3 servo (Gear doors) will move in unison with the retracts.
The Gear door servo (channel 3) will move with your Throttle stick, so you will want to do a second Pmix of Throttle to Throttle, but this time the rates need to be Negative 100% (-100%) each way. Leave Link off, Offset 0, and your switch Null.
Turn on Throttle Needle Mixing. Leave the percent alone. Now when you move the Throttle stick, the channel 8 (Throttle servo) moves perfectly (correctly).
Go to Throttle Delay and set it at 50%. Now when you move the Gear switch, Gear raises and lowers quickly, and then the Gear doors move slowly behind them.
By now you've noticed that the Gear doors are always slower than the Gear....including opening. So, Pmix Offset to channel 3 100%, Link off, and switch F down. This unfortunately isn't far enough, so again Pmix Offset to channel 3, 100%, Link off, switch F down. Now, let's try what we have. First, move your Throttle stick. Your Throttle servo should move normally, even though it is plugged into channel 8.
Now, your Gear is currently Down when the switch is toward you. Push the Gear switch. Notice the Gear comes up quickly, the doors close behind slowly.
Want to put the Gear back down? Pull your F switch, then let go of it and immediately flip your Gear switch. Now your doors went down, and then your Gear went down.
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