Designed for models that have electric retracts and gear doors, this circuit will allow you to sequence the action of the retract controller and gear doors for proper timing and operation. All the functions of this circuit can be adjusted to make it customizable for almost any model, including the direction (up or down) of the signal sent to the retract controller, the delay between the cycle of the controller and the movement of the gear doors, and whether or not the gear doors remain open after the gear are down, or close back up until the command to raise the gear is received. In addition, the speed of the gear door servo is reduced for more scale-like movement, and to make the timing of the functions easier. Plugs into a single channel in your receiver, and connects to both the retract controller and the gear door servo(s). Can be used for multiple gear door servos by using a common servo Y. Check the Product Details section for a description of a typical installation.
Small, compact, and easy to set up, this is a great way to solve the problem of gear door sequencing without having to use multiple channels in your receiver and/or complicated programming of your transmitter.
UPDATED VERSION: This circuit is now available in two versions, the original version that is suitable for retracts that are driven by a conventional (proportional) servo, and a new version designed specifically for retracts that are driven by small, brushed DC motors, like those that come pre-installed on many ARFs sold by companies like FMS, Robart, and E-flite.
