| Onan Flywheel Alternator Question [message #302742] |
Mon, 27 June 2016 23:58  |
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SteveW
Messages: 538
Registered: June 2005
Location: Southern California - Ora...
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Greetings - and Thank You in advance for your answers, comments, and suggestions.
One of the early upgrades I made to my coach was elimination of the buzz box and replacement with a Progressive Dynamics PD60. All good.
The PD60 is plugged into a 12VAC receptacle in the electrical cabinet. I've always thought that while running my generator (Onan 4K) - the PD60 was powered up and charging the (house) batteries. (The factory isolator is still connected as is a Yadina combiner - per Gene Fisher's circuit diagrams.)
I visited the coach at the storage yard this evening and started the generator and the engine as I do about once a week. After the engine came to temperature - I shut it down and had just the generator running. Everything looked just fine... 14V or so on the house 12V circuits - indicating that some charging was taking place. I don't know why - but something possessed me to unplug the PD60 and see what would be affected... Surprise !! Still 14V or so on the house circuits.
So... it occurred to me that the Onan Flywheel Alternator is still connected and putting out DC voltage !
A couple of questions arise:
My gut tells me that the PD60 is a better battery charger than the flywheel alternator... correct ??
When running the Onan with the PD60 plugged in - who's charging the batteries - flywheel or PD60 or both ??
If it's both - I'm really not getting the advantage of the PD60 battery charging intelligence am I ??
Did anything get damaged while running both ??
Which is preferable ?
It's pretty common for me to drive with the Onan running and the rooftop AC blowing...
Steve W
1973 23'
Southern California
Steve W
1973 : 23'
Southern California
[Updated on: Tue, 28 June 2016 01:00] Report message to a moderator |
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