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Originally Posted by NotSteve
I would put the A/C out the back, mounted properly with a nice shelve to support it. I think the way you have it will either cause your cab metal to deform or the thing is just plain going to fall inside the cab.
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That's where it was originally going to go. The problem is that the rear wall on a 379 is sloped, meaning the AC would have either had to be at a really odd angle, or all the water would have run right to the front of the unit. It's not sticking out very far, and most of the weight of the unit is held by the steel table I had built for it.
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A/C units are not meant to be mounted that way due to the heat that they generate which is going to end up in your cab. The back 75% is also meant to be outside in the heat so the dehumidifier can do it's job correctly to remove moisture from the air.
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Have you ever seen an in-wall AC unit? Those have no side vents at all.
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That muffler hanger in the back will break real quick. The pipe will vibrate and resonate causing the metal to fatigue and break.
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Possibly. I plan to keep an eye on it to see how it travels.
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I would suggest going to Mienike Muffler and have them install a car muffler pipe and car muffler like I did on my Rigmaster. It cost me I think $130.
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You know, I talked to the service guys at Peterbilt about that. When I said I knew a guy who put a car muffler on a generator, they cringed. They said that is probably the worst thing you can do, because you are actually restricting the exhaust from escaping, thereby
increasing cylinder pressure. I talked to another guy who knew someone who did that, and his generator died prematurely.
They told me that my only real option to reduce the exhaust noise is to put a longer exhaust on, never reducing the size of the exhaust, and keeping as many bends out of it as possible.
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Being a single cylinder I think it's going to be really really loud but the majority of the noise will come from the engine and not the muffler but you have some good insulation so that may help.
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We'll find out on Monday.
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The fan should not have been mounted on the side. It should have been mounted facing towards the rear like all other APU's.
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Take a look at a Comfort Master - it's mounted in the rear, just like this. Those APU's are running a radiator - I'm not. That's why the fans are mounted on the side.
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Between the air intake grill facing forward and the fan on the side that sucker is going to fill up in no time with tons of crap, salt, water and snow. I'm guessing those plugs will short out due to all the water and snow getting in.
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It is weather tight. It doesn't look it in the initial pictures because I was still putting it together.
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I would put the window back in, ditch the A/C unit and buy a roof mounted Carrier A/C unit and junk what ever you have to on the top of your cab to go that route.
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So let's see......I should
remove the wing on my roof, which has given me a
guaranteed 3/4 MPG savings, so I can put a roof mounted RV air conditioner up there because it would look better? :roll:
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Your also going to have to change the oil very frequently. Most APU's like mine have a 4 quart capacity due to the harsh conditions and having more oil extends the frequency of the oil changes.
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Mine took 1 3/4 quarts. The manual suggests changing oil every 500 hours.
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I also think your going to generate tons of heat with a single cylinder engine basically running it's balls off as opposed to a twin cylinder like most APU's that have a large radiator with fan and water cooled.
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Possibly. Most of the time it will be running at 1/2 load or less.
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I applaud your setup and think it's a good start and will work for a while but my guess is that your going to end up doing the WHOLE setup over again with better equipment.
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For what you paid for your
one Rigmaster, I could replace this generator
TEN times. If I can get one year out of it, that means I can run for
TEN years before I've matched your cost. How long do you expect your Rigmaster to last before you'll have to replace it?
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I'm being Devils advocate here and not attacking you personally and hope it didn't come across that way.
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It did. I'm telling a moderator. :wink: