by SuperFly » Thu Mar 03, 2016 9:26 am
I have my airplane wired exactly according to Bob Knuckolls Z16 drawing,(as Gary posted above) with the exception of the low voltage warning module. I have an Dynon D180 and it will warn you of low voltage (setable parameters), as I think most all EFIS screens will do. I have read some opinions that say dumping the load quickly on the Rotax alternator could cause damage to it. My thoughts were, it is cheaper to damage and replace the alternator than to replace all the electronic gizmos in the panel if the voltage were to run away. The engine would continue to run on battery power for the duration of battery capacity in that event. (Ideally giving enough time to find a suitable landing spot).
Now, I can not speak to the effectiveness of the system in an actual event, and God willing, I never will, but it is a pretty inexpensive, lightweight, and fool-resistant option if it were ever to occur.
Also, I am sure it has happened, but it seems to be a pretty rare problem with the 912s. It seems (at least to me) that you just never hear about it being a problem.
My $0.02... Probably over priced too.