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Old 08-10-2014, 07:26 PM   #1
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Thumbs down Generator - quiet RV

Hi:

We are looking at a class B RV (diesel) and would appreciate some feedback on whether we should be going for diesel or propane and which is the quietest.

Help - Ken
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Old 08-10-2014, 07:35 PM   #2
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Diesel only if your coach is diesel powered. People with 5vers usually go for the LPG generators and I have read where they can be problematic.

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Old 08-10-2014, 07:43 PM   #3
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If you have a diesel powered MH, then diesel generator is a much better choice over propane. It is more efficient and easier to obtain fuel for.
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Old 08-10-2014, 07:46 PM   #4
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Diesel for sure

More energy in the heavy fuel and the diesel is usually 1800 rpm with lpg running 3600
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Old 08-10-2014, 08:35 PM   #5
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Generator - quiet RV

Read this thread..... Not as simple a question in a class B
as there isn't room for a traditional Diesel Generator like an Onan.

Generators for Roadtrek RS-Adventurous
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Old 08-10-2014, 09:00 PM   #6
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Before selection of generator first question is what is the need?

If needing to use while moving fuek should be same as motive power.

If only while parked then furl does not matter as much.

Second question is size, there are tiny and very quiet gas generators but they require gas and transporting gas or even empty generator and can are not optimal.

Third question is where is generator to be stored/mounted.

No clue how clas b are done...coukd gave one added in receiver hitch but that is tacky. Roof mount option too.

Best for noise and output woukd be diesel as that is same as motive fuel but as others reminded a class b has fewer options.

Lpg would wipe out a small tank fast so that option may be doable if you have lpg but if tank small then refueling is isdue.

There may be compact diesel units...

Maybe post in the class b area too
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Old 08-10-2014, 11:07 PM   #7
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Diesel, period. Propane is way to expensive to run and you can't store enough. Diesel is quiet and you already have a fuel supply. What kind of B class are you looking at?
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Old 08-11-2014, 06:45 AM   #8
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First thought is this is pretty brain dead. Not even a contest. Second thought, that's assuming you have the room to carry what I'm used to (7.5-10K Onan)? If it must be a compact due to size restrictions, I don't even know what's available....
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Old 08-11-2014, 07:44 AM   #9
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Very true ahicks. I don't think I've seen a small diesel gen.
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Old 08-11-2014, 07:45 AM   #10
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I have a suspicion that the type of diesel generator the OP is talking about, is one where the generator is mounted under the hood, and driven by the chassis Diesel engine by belts and pulleys......this is what RoadTrek uses in their class B RV.

I'm not a fan of this technology as it's not proven yet, and probably very limited places while on the road to repair it.
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Old 08-11-2014, 06:33 PM   #11
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First thought is this is pretty brain dead. Not even a contest. Second thought, that's assuming you have the room to carry what I'm used to (7.5-10K Onan)? If it must be a compact due to size restrictions, I don't even know what's available....
This would be a 3.0L MB 6 cylinder. 2.8 to 3.2 Onan diesel generator.

Thanx
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Old 08-11-2014, 06:48 PM   #12
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This would be a 3.0L MB 6 cylinder. 2.8 to 3.2 Onan diesel generator.



Thanx

I don't understand. Are you saying that you can pick the Onan RV QD3200 as your diesel generator?

From what I understood about similar class B coaches, the only diesel generator option is the one mounted to the chassis engine.

If you have the option to pick a diesel Onan, then most certainly take it !

Don't take the engine mounted version.....not good for your chassis engine to be idling for long periods of time.
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Old 08-11-2014, 06:48 PM   #13
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Here's a link to the 3.2 for anyone interested.

http://www.cumminsonan.com/www/pdf/s...ets/a-1501.pdf

With no other experience, just looking at the specs, if it wasn't dramatically more money I'd be tempted to try one.

Even though it's a diesel, 2 things about it bother me. First, it's a single cylinder. In my experience, singles shake, plain and simple. The other is it's air cooled.

The fact it's bigger diesel cousins are liquid cooled give them much of their major advantages over anything else offered. Air cooling on the gas or LP geni's can leave them wanting when it gets really warm out - where the liquid cooled engines just keep on humming.

Without much of a track record, those 2 factors would be my biggest concerns going into one. That's me though, FWIW.
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