rv969wf
Well Known Member
Heres the problem. I've got a ND alternator on my RV-6 that has worked great for 500hours or more. It charges upon start up of the engine and works for about 30 minutes into a flight then quits until I slow the engine to around 1,500 rpm, speed the engine back up to cruise speed and it quits, slow the engine again back to 1,500 rpm and it starts charging again. Can anyone tell me what the heck is going on? I've replaced the voltage regulator, checked all the connections, grounds, wiring is solid, no corrosion etc. I've taken the Alt off and put it on a bench test and can't find any problems. I thought it might be heat related, but why will it charge when slowed down and still heat soaked??? Any help would be great, Next step is to replace the Alt. but I'd like to have some input a to why it is acting up like this. Thanks.............