National AirParts’ new 70-amp alternator (right) next to the old 55-amp unit
I’m told that the first Debonairs–the 1960 models–came with 35-ampere/hour Bendix generators. That’s not much of a power output. There are stories out there telling of lights dimming at idle power, and ammeters showing discharges when all electrical equipment is turned on. So next up was a 55-amp generator. That still didn’t provide a large enough volume of steady electrical power.
Our/your Debonair began life with the 35-amp generator, but that was swapped out for a 55-amp Alcor alternator according to the logbooks. That was a start in the right direction.
But 55 amps isn’t nearly enough for the basically all-electric panel being installed at Santa Fe Aero Services. “We need 70 amps,” said V-P and General Manager Pat Horgan.
Thus began my search for a Supplemental Type Certificate (STC) holder that could provide us/you with this sort of power rating.
National AirParts, of Deland, Florida (www.nationalairparts.com) filled the bill with its popular STC that allows us to move up to 70-amp-land. National’s Al Petrone says he can even fix you up with a 100-amp alternator if need be. Thanks very much, Al.
National has a lot of alternator STCs covering a wide range of airplanes. Check their website for details and plenty of info.
And remember that bad old alternator bracket–the one that broke, and that I reported on last time? Well, Wentworth Aircraft’s replacement bracket (see my previous blog) fit the new alternator, and the whole works will soon be installed. Along with beefier wiring and a circuit breaker designed to the new limits.