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Homebrew gound block

fl-mike

Well Known Member
Patron
I did this on my last 8, so this time I decided to capture the process with a couple photos.
Some .050 brass sheet off Amazon, sheared to size.
Bend a flange, and punch some mounting holes. I made one larger for the ground strap lug.
1/4" tab strips from Keystone Electronics. I used two flush rivets from the backside to hold each of the strips in place for soldering.
Put the plate on the cooktop and wait a few minutes. Flow in some rosin core solder along the edges of the stips, and slide the plate off the burner when satisfied. Clean off the flux with some alcohol.
Straddle and solder a soldercup Dsub on the flange. (I use this with a mating connector for all the low current avionics grounds. A poor-man's version of the $$$ crimp and poke mil-spec ground buss blocks. Takes a lot less space than a bunch of 1/4" tabs.)

The short ground strap is bolted to the longeron at the back of the baggage compartment. Easier to inspect. The plate will pick up airframe grond via the mounting screws plus the ground strap.
 

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