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carl.froehlich(at)cox.net
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 Posted: Sun Aug 26, 2007 4:14 pm Post subject: Demagnetizing the roll bar |
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I used a bulk video tape eraser to solve the problem. I have a standard
van's pedestal mount compass on top of the glare shield. It was more than
30 degrees off when first installed.
To demagnetize the roll bar, I first removed all electronics and the compass
from the plane. I ran the tape eraser over all sides of the roll bar, and
the forward hoop of the canopy frame. It took about 4 runs total.
After reinstalling the compass and making the standard N/S and E/W
adjustments, the compass has no swing error.
I recently installed a Dynon EFIS in the panel. Using the installed EFIS
magnetometer and following the Dynon setup instructions I was able to zero
out the heading error in it as well.
Carl Froehlich
RV-8A (350 hrs)
RV-10 (wings)
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Steve Glasgow
Joined: 10 Jan 2006
Posts: 674
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| Posted: Mon Aug 27, 2007 2:19 am Post subject: Demagnetizing the roll bar |
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Where did you get the bulk video tape eraser?
Steve Glasgow-Cappy
N123SG RV-8
Cappy's Toy
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_________________
Steve Glasgow-Cappy
Cappy's Toy
RV-8 N123SG |
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rv8builder(at)earthlink.n
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| Posted: Mon Aug 27, 2007 4:08 am Post subject: Demagnetizing the roll bar |
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Radio Shack at one time had "bulk tape erasers". But with the demise of tape players (caused in part by MP3 players) RS may not have them now. One might check eBay for "bulk tape erasers" or "degaussers". Good Luck.
Dale
do not archive
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carl.froehlich(at)cox.net
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| Posted: Mon Aug 27, 2007 2:54 pm Post subject: Demagnetizing the roll bar |
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I got mine from someone who had it lying around.
I just checked eBay. They can be had for $20 or so.
Carl
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