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Old 10-29-2016, 01:45 PM   #1
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Dual alternator on P-32 wide with 8.1L?

Has anyone ever added a dual alternator kit to their P-32 8.1L chassis motorhome?
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Old 10-29-2016, 04:06 PM   #2
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Quote:
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Has anyone ever added a dual alternator kit to their P-32 8.1L chassis motorhome?
Isaac-1
Why would anyone want to?
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Old 10-29-2016, 05:12 PM   #3
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It would allow a dedicated high output alternator to recharge the house battery bank while driving down the road, and use an inverter to power the cabin air conditioner so you don't have to run the generator while running the main engine.
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Old 10-29-2016, 05:20 PM   #4
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Is something wrong with the gen? I don't understand why go to the expense?
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Old 10-29-2016, 07:26 PM   #5
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Mainly one less thing to maintain fewer generator oil changes, etc., depends on your travel style I guess, if you don't stay in one place too long it can make sense to use a high output alternator on the main engine to run things and recharge the battery bank while on the move. Plus wear on a $450 high output alternator is a lot cheaper in the long run than wear on a $4,000+ generator.
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Old 10-29-2016, 11:48 PM   #6
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Sounds like a good idea to me especially if you have a residential refrigerator.

I've not heard of anyone doing this but will watch this thread to find out more.
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Old 10-30-2016, 06:12 AM   #7
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You will be replacing batteries on a regular basis
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Old 10-30-2016, 06:56 AM   #8
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You will be replacing batteries on a regular basis
Why would that be?
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Old 10-30-2016, 06:58 AM   #9
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Dual alternators are more common in the marine industry then the RV side. Probably because of the extra room avalable around the engine.
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Old 10-30-2016, 07:03 AM   #10
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You will be replacing batteries on a regular basis
We all replace batteries on a regular basis.

Cycles and depth of discharge determine when.
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Old 10-31-2016, 07:56 PM   #11
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Quote:
Originally Posted by Isaac-1 View Post
Mainly one less thing to maintain fewer generator oil changes, etc., depends on your travel style I guess, if you don't stay in one place too long it can make sense to use a high output alternator on the main engine to run things and recharge the battery bank while on the move. Plus wear on a $450 high output alternator is a lot cheaper in the long run than wear on a $4,000+ generator.
And just how many gen set that you know of have been replaced because of wear, (hours)?

I would think that solar panels would be a better choice


Even with dual alt. I would doubt that you could still run the A/C and residential fridge.
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Old 10-31-2016, 08:00 PM   #12
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Actually Many Emergency vehicles have Duel Alternators for increased power needs !
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Old 11-16-2016, 12:38 AM   #13
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If you don't exercise you genny on a monthly basis you will be having to spend a bunch of money on it to make sure it runs when you need it. Believe me. I've seen it happen all too often.
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Old 11-16-2016, 12:58 AM   #14
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Just keep in mind that airflow to cool the second alternator is critical. Also, don't run it above about 75% of full rating for hours on end.

Otherwise, I like the idea.

Please post a story with photos, etc. if you do it.
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