Weight and Balence and wiring
Weight and Balence and wiring
(OP)
Hello all,
I have an a/c inspector asking me to include the weight of the wiring for a new system installation. Is this a practice that has ever been followed before? If so where do you chose the moment arm? The center of the wiring run? To me you would just re-weigh the a/c.
Thoughts?
I have an a/c inspector asking me to include the weight of the wiring for a new system installation. Is this a practice that has ever been followed before? If so where do you chose the moment arm? The center of the wiring run? To me you would just re-weigh the a/c.
Thoughts?





RE: Weight and Balence and wiring
RE: Weight and Balence and wiring
If you know how much wiring has been put in, say, 100 feet, then cut off 1 foot from the roll, weigh it on a sensitive scale, and multiply by 100. Presto. A wildly inaccurate number that will totally satisfy the inspector.
DON'T suggest out loud to anyone that you should re-weigh the aircraft for a re-wiring job, or soon they'll be asking you to re-weigh the aircraft every time you clean it, too. Sorry for the sarcasm, but I've many heard stories about silly inspector questions.
STF
RE: Weight and Balence and wiring
The MIL-Specs have the weight per lineal foot of the different types and gauges of wire used.
The center of gravity can then be assumed to be the center of each wire run.
This should satisfy the inspector and is relatively painless to do.
Hombre
RE: Weight and Balence and wiring