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Location of compass

Vilhelm

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I wonder if anybody have tried to mount the compass on the upper wing? I recently read an article on the Heinkel He 51, a german biplane fighter of the thirties. This airplane had the compass, together with a rear wiew mirror mounted on the center piece of the upper wing.

I think we can forget about the mirror, but what an excellent location for the compass. No magnetic interference at all, and compass-swinging must be a piece of cake.
I am seriously considering to mount my compass there. I have a welded tube structure just behind the front headrest( the passengers shoulderbelts is passing over it, so he will not suffer spinecompresion in an accident ). But this tubes makes for a lot of magnetic interference, when the compass is mountedin the instrument board, or even on the glareshield.
Of course I have to make astreamlined fairingto minimize the additional drag.
A good idea oris there something I have overlooked ?
 

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