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Old 05-22-2012, 09:25 PM   #1
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Newmar Mountain Aire

Hey folks, I am looking at a 2006 Newmar Mountain Aire with about 27,000 miles on it and I have a concern on wether the 7.5kw Onan is enough to power the 2 roof A/C units on extreme hot days without putting too huge a strain on the Generator. Also any other tips or things to watch out for on a Newmar with this type of age and milage on it? Any info is greatly appreciated !! Thanks!
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Old 05-22-2012, 09:41 PM   #2
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Eheld786, You do not need to be concerned about a strain on the generator. We have run two 15M air conditioners and a few additional items without any problem of really loading down the generator.

As to other things to look for on a 2006, check maintenance records, tires for cracking from sitting a lot, fluid levels. What model is it that you are interested?
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Old 05-22-2012, 10:40 PM   #3
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With two roof ACs going full blast, you'll be running the generator at about half capacity. The Onan will do that forever. Not something to worry about.

joe
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Old 05-23-2012, 12:24 AM   #4
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Hi, and Welcome to iRV2.
7500 gen set is plenty, along with that ,the built in staggered AC compressor start-up keeps the system well within load limits.
X2 on records, how many hours on the gen set ? Has it been used and serviced accordingly ? Or totally ignored ? Exercising and use of the gen set on a 6 year old coach should be 150>200 hrs. Low, low hours can mean rust, and major headaches.
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Old 05-23-2012, 06:26 AM   #5
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In reality, unless you plan on doing a lot of dry camping, you won't run the generator that much, at least I don't.

Some people run the generator while going down the road to be able to run the coach air conditioners or other appliances. I have the same genset and it has no problems running the airconditioners and the microwave or any other appliances in the coach. You will also have an EMS system that will manage the load that the genset sees, not to worry, sounds like you are getting a great coach.

And BTW, Welcome to the Fourm, post some pics when you get it, we all love pictures.

Happy Trails
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Old 05-23-2012, 06:46 AM   #6
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I bought a Mtn Aire last August which had been sitting for a while on the dealer's lot. This is what needed to be repaired:
1 Penguin AC had leaked was welded and re loaded
All 4 slides were re-adjusted
batteries replaced
Pioneer GPS/NAV was dead/replaced
1 front tire moved to rear inside, coach re-aligned (vibration at 65 mph)
Dish/dome (KVH L3) was dead, discount given
the digital keyless/keypad was replaced (Essex 1701)
small crack at top of passenger side windshield, windshield replaced
Jacks keypad replaced
Full maintenance on engine and frame, onan genset, hydro hot

Since then and after more than 3000 miles and about 40 days spent in it, I am very happy with this coach. Test drive the one you're interested in on a rough road and see if you can get them to eliminate some of the noises; this would be my only complaint about my coach...
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Old 05-23-2012, 07:19 AM   #7
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Wow, thanks a lot for the info! Very Very glad I asked! This unit is at MHSRV in Alvarado Tx, it shows a new set of Michelin tires but no info on hours on the Gen. Before I buy anything I'll be going thru it with a fine tooth comb, rattles and squeaks are a huge pet peeve of mine but in the Motorcoach world they may be somewhat unavoidable. I do happen to have this little voice in the back of my head telling me to hold off another year and be more serious on just looking into a new Entegra, possibly an Aspire or Anthem. Once again I appreciate all the feedback! Hope everyone is having a happy and safe summer!!
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Old 05-23-2012, 07:30 AM   #8
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That 7.5kw will work just fine. We have a Generac in ours. Good Luck and hope all works out with your purchase.
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Old 05-25-2012, 06:03 PM   #9
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Even thought they are new tires, check the date code on them to verify their age. Depending on the area and tire size "new" tires could 6 months to a year old sitting in storage.
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Old 05-25-2012, 07:46 PM   #10
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LISTEN TO THE LITTLE VOICE IN THE BACK OF YOUR HEAD !!!! YOU CAN'T BEAT THE NEW ENTEGRA.
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Old 05-26-2012, 03:05 PM   #11
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I agree w/ Quail Hunter. Get the Entegra w/ the 12.5k generator... run everything you want and have no worries whosoever. Not to mention the Entegra customer service is the best I've ever seen. Ask around on the forum you'll hear everyone beyond pleased!
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Old 05-26-2012, 03:29 PM   #12
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I guess copying a proven design is a way to go.
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Old 05-26-2012, 05:20 PM   #13
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If it's not broke...

I agree with you Mr D. Upgrade the old TS design, add new technology on a proven chassis and the put the cherry on top of unbelievable customer service and you have something unique.
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Old 05-26-2012, 06:55 PM   #14
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Let's see;

7500 watts @ 120 volts = 62.5 amps

Does your rig take more than 60 amps at any one time.
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