Hallo.
I've been flying with my -9A since 2011 with 0 problems.
My electrical system is the Bob Nuckoll's Z-11 with a Bandc L-60 alternator and a L3C voltage regulator, mounted on the engine side of the firewall.
After 4 years of flight alternator breaker sometimes pops when running the engine after say a month (hangar cold and humid). After a few minutes, maybe wire contacts dries and alternator goes on again. Bandc told me to perform the regulator troubleshooting but I didn't do it, yet.
Now, in the last flights, in different days, the alternator goes off in the middle of the approach, just before landing. I bought a new battery, but still haven't installed. The installed PC680 has 6 years. It is still capable to turn the engine, even if I suspect it is getting old.
Before changing the battery (behind the baggage bulkhead, so 1 hour of work), I am wondering if the problem is the battery or not (i.e.: regulator). Is reasonable for a cranking battery to die when asked for a huge load (i.e.: all lights on, engine at minimum and so alternator not producing power)? Is possibile that the alternator breaker goes off because the battery voltage drops under 10 volts? Or the problem is located in the regulator?
Thanks.
Camillo
I've been flying with my -9A since 2011 with 0 problems.
My electrical system is the Bob Nuckoll's Z-11 with a Bandc L-60 alternator and a L3C voltage regulator, mounted on the engine side of the firewall.
After 4 years of flight alternator breaker sometimes pops when running the engine after say a month (hangar cold and humid). After a few minutes, maybe wire contacts dries and alternator goes on again. Bandc told me to perform the regulator troubleshooting but I didn't do it, yet.
Now, in the last flights, in different days, the alternator goes off in the middle of the approach, just before landing. I bought a new battery, but still haven't installed. The installed PC680 has 6 years. It is still capable to turn the engine, even if I suspect it is getting old.
Before changing the battery (behind the baggage bulkhead, so 1 hour of work), I am wondering if the problem is the battery or not (i.e.: regulator). Is reasonable for a cranking battery to die when asked for a huge load (i.e.: all lights on, engine at minimum and so alternator not producing power)? Is possibile that the alternator breaker goes off because the battery voltage drops under 10 volts? Or the problem is located in the regulator?
Thanks.
Camillo