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fly4grins(at)gmail.com
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 Posted: Fri May 27, 2016 5:50 am Post subject: Switchology and safety, was Infinity Aero Grip and Starter S |
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Switchology and safety, was Infinity Aero Grip and Starter Switch
Some thoughts on switchology-
My once a flight switches (IGN, starter, batteries, lights, pitot heat) are on the right edge on my panel (tandem cockpit), my frequently used and Oh Crap switches (fuel pump, flaps, trim master, A/P arm, OVM reset) are on the left edge of the panel, conveniently close to the throttle. The rear stick has trim and PTT switches, the front stick has trim, PTT, EFIS display advance, and A/P disconnect. One of the Oh Crap switches is a progressive that controls trim function. Up has both stick's trim functions live, center interrupts the rear stick trim switches ground, and down interrupts both sticks trim switches ground paths. This way, I can pre-emptively kill the trim function for the rear seat should I have a non-savvy passenger as well as killing the whole system if I have a trim runaway.
FWIW, YMMV, ETC....
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stuart(at)stuarthutchison
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| Posted: Fri May 27, 2016 2:26 pm Post subject: Switchology and safety, was Infinity Aero Grip and Starter S |
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More food for thought.
I have identical Infinity grips with 25pin D-sub connectors front and back in my tandem, so that I can swap the sticks if a stick switch happens to fail. I also fabricated an isolation circuit with two relays on vero board, controlled from small locking toggle switches on the CB panel. The front stick functions are wired directly to the output side of the vero board circuit. The rear stick functions can only reach the output side of the vero board if the relays are closed, bridging some broken copper tracks on the board. I now have the means to provide full functionality to the rear stick, trim only or nothing at all via two small switches up front.
| Quote: | On 27 May 2016, at 23:47, GLEN MATEJCEK <fly4grins(at)gmail.com (fly4grins(at)gmail.com)> wrote:
Switchology and safety, was Infinity Aero Grip and Starter SwitchSome thoughts on switchology-
My once a flight switches (IGN, starter, batteries, lights, pitot heat) are on the right edge on my panel (tandem cockpit), my frequently used and Oh Crap switches (fuel pump, flaps, trim master, A/P arm, OVM reset) are on the left edge of the panel, conveniently close to the throttle. The rear stick has trim and PTT switches, the front stick has trim, PTT, EFIS display advance, and A/P disconnect. One of the Oh Crap switches is a progressive that controls trim function. Up has both stick's trim functions live, center interrupts the rear stick trim switches ground, and down interrupts both sticks trim switches ground paths. This way, I can pre-emptively kill the trim function for the rear seat should I have a non-savvy passenger as well as killing the whole system if I have a trim runaway.
FWIW, YMMV, ETC....
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http://www.matronics.com/Navigator?AeroElectric-List |
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