Ron Wanttaja wrote:



One bit of warning, the auto and aviation regulators look very similar, but
apparently don't work the same. The aviation regulator has the three
terminals unevenly spaced, rather than evenly spaced like the automotive
units. When my airplane wouldn't charge, I replaced my regulator with an
automotive one before going through the work to remove the generator. I
eventually had the generator rebuilt, but when I put it on the airplane, I
still didn't get a charge until I restored the original aircraft regulator.



When I lived in Florida, I needed a new regulator for my Mooney. The going
price was quite stiff. I contacted Delco and found an automotive regulator
with the same specs as the aircraft one. The only difference was the thickness
of the base plate. It was in the Mooney for about 5 years, when I finally had
an electircal problem, and the A&P wouldn't recertify the airplane unless I
replaced the regulator with a "aircraft" one. I think I still have it
somewhere downstairs.

Warren