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Compass wrong on rear view mirror!?
Posted 27 March 2006 - 09:38 AM
Anybody had this problem?
Posted 27 March 2006 - 10:24 AM
Posted 27 March 2006 - 10:31 AM
Posted 27 March 2006 - 01:05 PM
I prefer the Iron Compass myself. We get SO spoiled flying in the west.
Posted 27 March 2006 - 04:13 PM
I've never seen LPC's (Leather Personnel Carriers) crash and burn......
trying to explaine magnetic variation to hte ground pounders, eh Strakes?
Mine was set for the wrong zone as well - it was set for 5, as I recall.
Posted 27 March 2006 - 11:47 PM
Now if I remember one of my flight instructor's side comments correctly, the frame of the car, electricity flowing through nearby wires, or anything else that can generate or alter a magnetic field can interfere with the compass. So if the compass seems really off, I'd start searching for interference.
I want to say my flight instructor said the compass had to be adjusted when it was installed in the aircraft, adjusting for any interference the other equipment/design of the aircraft. I doubt it could've been more than a few degrees, so I don't think you're gonna notice/complain about it in the car. A few thousand feet up, though...
Posted 28 March 2006 - 09:44 AM
Posted 28 March 2006 - 09:52 AM
Posted 28 March 2006 - 04:56 PM
I thought you used Interstates....
It funny to see the magnetic compass in the cockpit spin around and tumble when you power up the generators and avionics. And in the worst case scenario, I'm supposed to rely on this compass when all the redundant systems fail? Now I know why early navigators used the stars, sun, time, calendar and moon first then used their compass.
In Germany our chopper pilots could always find home because of the immense nuclear plant cooling tower nearby. In the day only medevac choppers had GPS. Now LPC's have GPS.....
Posted 28 March 2006 - 07:49 PM
GPS is worth every penny. I highly recommend anything made by Garmin. Just remember that those DOD satellites were originally used for targeting nukes so they're pretty reliable. Nothing like triangulating a fix from 3 satellites to figure out where you are and where you're supposed to go...
Posted 29 March 2006 - 11:37 AM
Posted 29 March 2006 - 03:34 PM
Posted 22 May 2013 - 06:34 PM
Found this video useful today when doing one in a 2010 Outback with a new mirror install so it should be the same as a 2013 one.
Posted 23 May 2013 - 09:51 PM
There is a calibration procedure that you should do periodically - check your owners' manual. It corrects for changes in the magnetization of the body so you can get true readings. Basically you push a button sequence to put it in calibration mode, then drive in a circle in an open area free of nearby steel objects.
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