Landing Gear Sequencer

Just arrived the replacement all metal nose gear for Valkyrie albeit this retract is for a Viper 90mm. I will also have to swap out the leg as the Viper is shorter than the Valkyrie. The retract is not electronic, ie; two wire system which means I need a sequencer to reverse polarity to the retract motor and another output, ie; 3 wire for PWM for gear door. Any suggestions on a cheap sequencer? MotionRc cannot help because all their retracts are electronic versions

Phil - Might be worth a look on Model Radio Workshop - www.modelradioworkshop.co.uk
Colin.

Have a look at the nose gear doors of the FMS PC-21, passive operation no extra servo/electronics. I've got one if you'd like to see how its done.

The new all metal nose retract is only two wire. It does not have a signal wire like Eflite, Jetcraft, etc, where the electronics to reverse the motor are built in. Therefore it needs a controller (see example images below where you will see only two pins for the retracts on PilotRC and the RC Lander units) which switches the polarity to change direction of motor. In most cases the controller also sends PWM signals to servos for doors etc.

Really stuck on this issue to get an operating nose leg to work with minimum fuss.

Phil Ford wrote: Really stuck on this issue to get an operating nose leg to work with minimum fuss.

Minimal fuss = don't order retracts without a signal wire

I've still got this hobbyking front leg or I might be able to repair the old one