Do you run a master switch, or are the Circuit breakers the switch. I have a
master switch, but its bothering me that if that if ONE switch fails, it all
fails. I I think I'll skip the master switch for flight critical.

Bob Mears
Supermarine Spitfire

That has happened Bob. A Power Sport RV8 crashed and was destroyed when the
master switch failed.

Not a problem with mags in cert airplanes.  Only in these all electric
airplanes.

Paul Lamar ...No rotor no motor.

I would not depend on the Cessna type split rocker master switches. I have
had to replace two when they failed in a Cardinal. When they fail they cause
all sorts of funky problems, they do not quit all at once. They also control
the master relay (which can also fail). I think all those 70's eras rockers
in Cessna's were made in Mexico-I am certain of it because I am looking at
one. With a magneto run engine, not a big problem (unless you are ifr.....).
Marc W.

Is it made by ElectroMech Components Inc? The owners are friends of mine.
They have a factory in El Monte and Mexico. They make a lot of military
and aircraft switches.

http://www.electromechcomp.com/

Paul Lamar

Why not use 2 independent buses with 2 alternators, 2 batteries, and 2
master switches ? Maybe the second alt and battery are smaller and only
sized to support the min. flight equipment with the primary sized for
everything including the starter ?

-dave



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