Can these regulators be used on the Jabiru engine? The Jabiru has a permanent magnet rotor.
Per the supplier: No, it will not work on the Jabiru's.
Will this work on the Rotax 503?I think it can put out 150 volts AC and I see this one says up to a 100 volts.
Per Vendor: Yes, the Rotax 503 would be the most typical application for this product. This will be hooked up to the lighting coil/alternator.
I have a Rotax 503 installed on my flightstar I am running the consumers with a battery but no electric starter. Will this regulator overcharge a 12V nine amp battery?
No, this would not over charge your battery, as long as your battery is not over 14 Volts.
Would this KEY WEST PS030 REGULATOR / RECTIFIER be suitable for a Rotax 582 with an electric starter motor?
Yes, the Keywest regulator is a very popular regulator for Rotax 2 stroke engines.