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Old 02-18-2007, 04:05 PM   #1
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Yamaha ef2400is propane powered gen

Im about to pull the trigger on the Yamaha ef 2400is with propane conversion from US Carburator. Anyone have this unit? Does anyone know what the change is from the EU to the EI serries? And who has done business with this company? Here is the link: EF2400is

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Old 02-18-2007, 04:11 PM   #2
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I noticed the Yamaha 2400 the other day in an ad, and was struck by the ad's claim that it would run an air conditioner.

What are you expecting out of the unit, Rodney?

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Old 02-18-2007, 04:15 PM   #3
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Mostly recharging of the battery banks, run the powersaw while I put the new laminate flooring in this spring, and the occasional AC run if need be.
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Old 02-18-2007, 06:05 PM   #4
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EU is I think Honda nomenclature. Yamaha has i, iS, and iSE and I too am not clear on what this all means. I've been considering the iS tri-fuel model as well, look forward to replies from others.
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Old 02-18-2007, 07:24 PM   #5
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I, too, am ready to add a generator to compliment my cronic Aluminitis. I have also read ads that claim this unit can operate a 13,500 btu RV A/C unit. The specs seem to bear that out or am I missing something?
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Old 02-18-2007, 07:35 PM   #6
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If you are dealing with US Carbueration, I waited nearly 3 weeks for my gen....

I have a propane powered Yamaha 1000 and love it. Since even the 2400 (single) won't power the A/C unit, I opted to go smaller. The 1000 came with battery charging cables. Been very pleased with it so far. I would think you'd be equally pleased with a propane Honda as well.
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Old 02-18-2007, 07:48 PM   #7
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Will it or wont it?

Will it or wont the 2400 run an AC unit? Who actually knows the anwser to this?
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Old 02-18-2007, 07:59 PM   #8
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My understanding is that the Honda is quieter than the Yamaha. Does anyone have actual experience? Also does US Carburation do the actual conversion to propane? I was aware they had the Yamaha but if the Honda was truly quieter I would go that direction. They are both good units. 3DogNight
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Old 02-18-2007, 08:09 PM   #9
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yahama generator

Dont forget that the propane conversion kit will cost you about 15% of the output of the gasoline ratings. You will have only 2040 watts of actual output from the machine on propane. This is due mainly to the reduced energy content of propane.
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Old 02-18-2007, 08:20 PM   #10
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hi rodney...

the answer is a definite maybe.

or not.

denellen reports that the gas 2400 will run his a/c, but the propane version is 10% less power, approximately

mike lewis reports his 2800 yamaha barely started his 13.5 a/c...he may have swapped to the 2x2k hondas

david tidmore tells us the 13.5/15000 btu a/c require 3500watts of start up power...

the 2400 yamaha has a peak of well, 2400 watts, and on gasoline.

do you have the specs for your a/c? what are the start up needs?

looks to me that this (startup) is the limiting issue...

there was a pretty complete article in airstream life last year on yamaha gen sets....

looks like the typical 13.5 a/c needs at least a 3000w genset, which is why folks opt for 2x2000honda or the 3000
yamaha.

i've read posts from a dozen or so here, who own the 2400 and denellen is the only one i remember reporting success.

pmclemore also has one but i've not seen a comment related to the a/c.

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Old 02-18-2007, 10:58 PM   #11
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Anyone.

Will the Yamaha 2400 gas or propane handle the smaller AC 1100 BTU?


Thanks Ron E.
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Old 02-19-2007, 07:44 AM   #12
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2000 will start an 11k unit...not sure on a 13.5k and clearly no way for a 15k btu unit.

2400 would be the same, except on the 13.5k, there I am not sure.

3000 would clearly run a 13.5k unit, but may be close for a 15k unit.

Where there is no question would be 2 units in par for any of the above.

I made a choice a while back myself and that was to get the 15k unit. I was told by Dometic that it will need 3k watts, maybe slightly more at startup to avoid wrecking the compressor.

So to hedge my bet, I bought and had installed 2 Fantastic Vents since I thought maybe one day I could afford 2 gens. Well, that day never arrived and even if it had, I found myself questioning (for my use) if it was worth lugging around 1 big gen or two gens and instead I use the 1000 to top off the batts and run the fans during extended periods. The 1000 is very quiet too.
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Old 02-19-2007, 08:16 AM   #13
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I am not going to weigh in on the original question However Yamaha makes a boost generator that "supposedly" will start the 13.5k A/C unit. I would be concerned running a generator that close to capacity. If you have the A/C running, along with the univolt/intelipower, your entertainment system and decide you want to heat up a bag of popcorn for a snack just as the A/C cycles on you may overload the generator. Also just a note as an FYI the 12 volt charger cables that come with the are a waste of time in my opinion. You would be better served by getting a small portable battery charger, a lot quicker and more efficient in my book. My personal choice in generators are the Hondas. The only time I have hooked my Airstream up to a generator, power was not and issue...17kw/3ph/408 diesel I suspect it would power several Airstreams without breaking a sweat.

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Old 02-19-2007, 09:15 AM   #14
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Ya know, the more I think about it, the more I like silvertwinkie's idea of just getting a nice, small Honda 1000 to keep the batteries charged and watch a movie. A second Fantastic Fan is my next upgrade. Thanx.
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