REFLECTOR: Avionics bus switch

[Chris Barber]

Aeroelectric.com<http://Aeroelectric.com> has discussed this issue before. If you have yet to discover this resource run by Bob Knuckles, I suggest you spend some time there.

Chris.

Sent from my iPhone 5

On Mar 19, 2013, at 2:13, "John Dibble" <aminetech at bluefrog.com<mailto:aminetech at bluefrog.com>> wrote:

Most of the time having the avionics on won't be a problem.  However if you have a difficult start due to cold weather or a low battery, the low voltage could cause you to lose stored data.  After this happened to me, I've always turned my engine monitor on after engine start.  I don't feel a need to have engine data for the 1st few seconds.

John

On 3/18/2013 7:37 PM, Don Johnston wrote:
Because of institutional memory, OWT, etc. I'm trying to decide how to handle the avionics bus.

Since the first day I sat in an airplane, I've always been told to never turn on the avionics until the engine is running lest to fry all the expensive, delicate, precious electronic devices.  Then again, I was also told to never run LOP, land without flaps, or taxi faster than an 80-year-old man can walk. :-)

Since I'm going to have all the engine info on GRT displays, there is no way to see the actual engine information unless the avionics are on before engine start.

So how are you guys getting engine info in a pure electronic panel environment? Separate, clean, protected bus for avionics? Ignore it since it's an OWT?  So other solution?

-Don




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