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Old 04-28-2007, 05:58 AM   #15
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Quote:
Originally Posted by Mike Lewis
Bernie---I had a 2800 for a short while and found it to noisy. it wasn't bad at the low rpms but under load as when running an ac it was Just To Loud ! It would run our 13500 ac but only with nothing else on,at altitude it struggled. Traded for 2 Honda 2000's----pieman
Did you have propane or regualr gas? Not that would make a difference in noise levels...just curious.
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Old 04-28-2007, 09:41 AM   #16
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a geek moment

I'm going from memory here so don't quote me. The 2800 (if I recall correctly) is about 10 decibles louder than the 2400. I think 60-70 and 50-60 decibles respectively (ranges based on load). Looking at the modest difference you might think this additonal noise from using the 2800 wouldnt amount to much. WRONG-O! Don't forget that the decible scale is logarigthmic, hence a 10 dB increase from 60 to 70 represents TWICE the sound.

As a matter of reference, normal conversation is rated at 60dB, and a lawn mower 70 dB. So the question is would you rather have the noise from a conversation next to your camper, or a lawn mower (and which would your neighbors want). The 1000 is in the 50-60 dB range and is better yet unless you might need more power. Because I might need to be able to run the AC, and will be using mine to run power tools, I opted for the 2400.
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Old 04-28-2007, 09:57 AM   #17
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Can you get remote start for the generator the OP mentions?
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Old 04-28-2007, 10:49 AM   #18
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Quote:
Originally Posted by Gen Disarray
I'm going from memory here so don't quote me. The 2800 (if I recall correctly) is about 10 decibles louder than the 2400. I think 60-70 and 50-60 decibles respectively (ranges based on load). Looking at the modest difference you might think this additonal noise from using the 2800 wouldnt amount to much. WRONG-O! Don't forget that the decible scale is logarigthmic, hence a 10 dB increase from 60 to 70 represents TWICE the sound.

As a matter of reference, normal conversation is rated at 60dB, and a lawn mower 70 dB. So the question is would you rather have the noise from a conversation next to your camper, or a lawn mower (and which would your neighbors want). The 1000 is in the 50-60 dB range and is better yet unless you might need more power. Because I might need to be able to run the AC, and will be using mine to run power tools, I opted for the 2400.
Well, that settles it for me. 2400 it is. Thanks Rodney. jk
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Old 04-28-2007, 09:50 PM   #19
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Hold the phone .

True, the 2800 is louder. It's the same engine as the 2400 so why is it louder? Answer is it doesn't have all the noise insulation wrapped around it. That's why, even though it's got a larger generator it's still lighter. My thought with the 2800 is I can get a "dog house" that will act as a storage/transport case and the lid will do double duty as a sound barrier. OK, that's the thought; I haven't gotten that far yet .

Point #2 which is the big issue. The noise is related to load. The specs really don't tell the story. When you have the 2800 under full load it is loud. OK, not REALLY LOUD but more than you'd want to stand next to and talk (although you can... Heh? wa'da you say? ) I haven't run the 2800 side by side with a 2400 but it wouldn't surprise me if at partial load the 2800 ran at a lower rpm (more capacity) which would offset the sound dampening of the 2400 ?

Moral of the story is you really have to experience it under real world conditions to know. I have no doubt the 2400 is quieter that the 2800. I know the 2800 is "loud" compared to a Honda 2000. However, a Honda 2000 would NOT have done what I asked of the 2800 this winter during a week long power outage and since a great deal of the justification for buying the generator was as a home back-up I'm really happy I went with the 2800.

Back to the A/C question; I finally got a chance to try my Yamaha EF2800i with the A/C in the trailer today. The trailer, a '78 Argosy 24, I finally figured out has only a 10,000 BTU A/C. The answer is.... the generator doesn't even notice when the A/C starts up. The Yamaha (like the Honda) has an Economy Switch which means the rpm ramps up when it encounters a load. Well, it doesn't noticably rev up off idle when the AC starts. NO WHERE NEAR the load of the Microwave in the house. Even the house refigerator pulls more start-up current than the trailer A/C. With the A/C running full bore the generator is sitting on idle

While the 2800 is loud under full load at idle it's reasonably quite. That's more than I can say for the A/C in the trailer. We're back to real world here. Standing under the A/C to turn it on I literally could not hear the generator. I had to have the wife tell me if she even heard it idle up. With the door open on the trailer I had to walk up front to even hear the generator running. Standing in the doorway the A/C still made WAY more noise than the generator only 10 feet away. So, while the Honda might be nice for the people in the campsite next door (the one's in a tent with no A/C well, it's irrelevant.

I suspect the people having trouble with 10,000-13,500 A/C running on less than 3,000 watt generators have an issue with the start-up capacitors on the A/C

It's amazing and confusing to read all the conflicting reports but having seen it with my own eyes (and heard it with my own ears) I have no doubt a 2400 would have powered our A/C just fine. Still, I'm happy with the 2800 since I did use it's capacity running the home during our week long winter storm.


-Bernie
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Old 05-06-2007, 01:40 PM   #20
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Took your advice

Quote:
Originally Posted by lewster
As most of the folks here on the Forum are quite mechanically adept, one should be able to either:

2)Buy the conversion kit from US Carb and do the conversion yourself.
Lew,

After calling US Carb on Friday to find out again they had no idea when they would have the Yamaha generators in stock I decided to take your advice. Ordered the Yamaha EF2400is and an hourmeter/tach from Wise generators and the conversion kit from US Carb. Saved about $150 overall, about 3-4 weeks waiting for a generator and am looking forward to putting it together. Installing a 3 stage Parallax conversion and Trimetric battery monitor this weekend gave me a confidence boost. Install on the converter and monitor was really straightforward and Randy at BestConverter.com was extremely helpful and responsive to questions I had. I would highly recommend him for anyone looking to upgrade their power system. jk
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Old 05-06-2007, 06:20 PM   #21
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Way to go JK!

You'll find everything that you need in the conversion kit. Be sure that you 'break in' the new generator ON GASOLINE for 3 hours 'under load' first before doing the conversion. I remember reading that in the instructions on the first one that I did. Just follow the directions and it's really no biggie to do.

Let us know how you make out!
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Old 05-07-2007, 03:48 PM   #22
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Quote:
Originally Posted by bhayden
[...] the generator doesn't even notice when the A/C starts up. The Yamaha (like the Honda) has an Economy Switch which means the rpm ramps up when it encounters a load. Well, it doesn't noticably rev up off idle when the AC starts. NO WHERE NEAR the load of the Microwave in the house. Even the house refigerator pulls more start-up current than the trailer A/C. With the A/C running full bore the generator is sitting on idle
I can confirm this is my same experience with the 2400iS on propane, while starting/running the 13.5k AC on my Safari.

I thought I might need to add a soft start capacitor to the AC, but the generator berely ramps up a little at AC startup, and remains running at near-idle. It's so slight I could almost dismiss it as my imagination. Guess they've already integrated a decent capacitor in these newer ACs...

Seems like there was a recent post about the published startup amperages for some of these ACs -- think it was under 13A for my mine, with lower runtime requirements. I'm pretty happy with my choice of the 2400iS trifuel

Cheers,
-jd
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Old 05-07-2007, 05:04 PM   #23
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Quote:
Originally Posted by 5cats
I can confirm this is my same experience with the 2400iS on propane, while starting/running the 13.5k AC on my Safari.
.....I Guess they've already integrated a decent capacitor in these newer ACs...

Cheers,
-jd
I'm still not sure what size AC is in my Trade Wind, but I do know it is at least 10 years old. My 2400 doesnt seem to notice it much.......
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Old 05-08-2007, 05:37 AM   #24
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That is great news Rodney and jd! I had accepted the fact the 2400 would not run my A/C. Now knowing it likely will is an added bonus! Thanks, jk
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Old 05-08-2007, 10:21 AM   #25
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Quote:
Originally Posted by JK3500
That is great news Rodney and jd! I had accepted the fact the 2400 would not run my A/C. Now knowing it likely will is an added bonus! Thanks, jk
No promises here , just a report on my experience. It does look encouraging though
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Old 05-08-2007, 10:53 AM   #26
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I have an EF2400is converted. It will run the 11000 BTU AC on a 2006 Bambi. I tried it on gas after I got the generator about a month ago, just to see if it would work. I turned off everything but a few lights. The AC ran without any problem. I think the rpm's went up about 200 with the AC on. I haven't completed the recommended break-in on gas yet, so I have yet to try on propane.
I purchased from US Carb already converted. They were out of that generator when I called. They were expecting a shipment from Yamaha that week. They told me they didn't charge until shipped and I would get a notice when actually shipped. They did everything they said they would. I think I got the unit 9-10 days after ordering.
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Old 05-13-2007, 07:29 AM   #27
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Generator Done

Well, the generator and the conversion kit came in last week. Did the converion on Friday (after breaking it in on gas, as stated).

The conversion went well, though I will say the instructions were a bit sketchy. The conversion though is pretty straightforward and, after reading the instructions several times and comparing the pictures to the parts it is not hard to figure out.

Once assembled, hooked it to the propane and, after priming a few times it fired right up. I really like the ability to adjust the fuel mixture; here at 8600' I was able to adjust it to run smoother than it did on gas.

Finally I plugged in the AS and fired up the A/C. the 2400 handled the load no problem, even running the A/C and a set of lights without raising the rpms. I have a 13.5 unit.

Also replaced the 20# propane tanks on my AS to 30 pounders and picked up 2 extra 30# tanks to mount in the truck. One tank will run the gen, the other will be a spare. They are secured in the truck with a standard 2 bottle RV rack bolted to the bed. I have been told the propane generators may not run off 20# bottles as the 20 pounders do not have the volume of propane to handle the draw of the generator. One of the experts may be able to explain this better but it has to do with greater surface area being able to produce more propane vapor.

Recommend the kit to anyone fairly mechanically inclined. It's a little scary once you start tearing apart your $1200 generator but, like I said it is pretty straightforward and, other than the holes you drill in the back cover to mount the regulator, completely reversible.
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Old 05-13-2007, 08:04 AM   #28
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JK,

I don't know where you heard about the 20# vs the 30# bottles. A friend of mine ran a 2400iS in the Wilma aftermath for 8 days on 20# cylinders.....no problems! From what I know, the surface area of the two tanks is the same, as determined by the diameter of the tank. Of course, 30's just have more LP in them and will run longer!

PS: I KNEW you could do it! Now you're intimately familiar with your generator, and can troubleshoot any problems with ease.
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