I put a vertical card compass in my Renegade three years ago. It has performed
flawlessly: you would think it was a directional gyro.
When I first installed it, it was deflected 10 degrees at all points of the
compass. I used a handheld compass and found that my Bowden cables that I was
using for the throttle, choke, and heat controls were all highly magnetized. I
degaussed them using a coil that we used to have to use on the TV picture tubes
before they installed permanent coils on the newer sets. When I was through,
my deviation was about 1 1/2 to 2 degrees.
The compass doesn't necessarily have to be on the centerline of the aircraft,
but it must be mounted with the face perpendicular to the centerline. Of
course, any equipment that has transformers in it will create a magnetic field,
so it's best to keep it away from strobe power supplies, etc. I have it
mounted about six inches from my GPS and ten inches from the VHF transceiver,
and I could not discern any deviation when they were in operation.
Jim Vance
va...@claflinwildcats.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
http://mylist.net/private/krnet/attachments/20030531/c0af19bc/attachment.htm
