using wing spar for ground

[Joel Jacobs]

Hi,
I see a couple people using the wing spar for electrical ground. I am too.
One thing you need to do if you do this is make sure the wing is bonded.
Don't rely on the wing attach and control linkages as an electrical
connection between the fuse and wing. I've installed cannon plugs in the
front D-sections of the root ribs and I'm using about 3 pins ea. for ground.
Inside the wing the wires are only 5-6" long to a ground bolt in the spar.
My aeroflash power supplies and landing lights are also grounded to the
spar. The wires that go to the ground pins on the fuse side will also be
short and go to a ground post nearby on the fuse.
You could accomplish the same thing with flexible braided grounding strap
between the wing and fuse.

Joel


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