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The nose gear door on my 235 is operated at the very
front. The rear end of it was hanging open slightly due to aero pressures. I
tried a permanent magnet and pole piece but that wasn't doing the job, Todd
Ealand, who was building his now-completed "Lionheart" and I discussed the use
of magnets since he was installing very large inner gear-doors on his plane. He
told me of a supplier of various sizes of electromagnets which he
obtained to hold his shut. I ordered two different sizes, and the one I chose
works like a charm. I tied it into the gear electrics so that it is only
operated when the gear retracts; it draws less than 1 Amp. I can't remember
off-hand how this was done or who the supplier is, but I can find out. Just the
electromagnet in the wheel well wall (say that fast!) and a pole piece on the
door with less than a .005" gap when closed to suck it
shut!
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