Subject: [FlyRotary] Re: Coil & Alt cooling, Buly's input shaft

 

I'm wondering if 180f under hood is really the main cause for coil fail? Auto's shut off hot in desert, black steel hood, must see temps way beyond anything we can throw at them. You can't get those puppies to fail regardless of environment. Perhaps there are one or two other significant causes. I'd be real quick to abandon that manufacturer.

 

There are coils; and then there are coils with built-in solid state components like the LS1.  Still, you’d expect these components to be good to about 150C (300F).  The alternator of course also has solid-state components in the rectifier circuit.  Makes you wonder why Tracy’s coils are failing, and not the alternator.

 

This issue is of definite interest to me as the LS1 coils on my 20B are in a similar setup as Tracy’s.  My coils are in the path of the exit air from the radiator.  I have assumed that air would typically be about 150F or less.  Won’t know until this thing flies.

 

Al