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Old 02-22-2018, 08:23 PM   #11
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I would not recommend counting on idling a modern diesel engine. it is very problematic with any vehicle with a diesel particulate filter, and it is not at all clear how much a high idle option helps.
I think the advantage of the high idle option is misunderstood. Its virtue is that it produces a modest increase in alternator output which is good because depending on the loads involved, it may reduce the period for which the engine has to idle at all. However, it's been pretty well settled that stationary operation at high idle does little if anything toward mitigating particulate accumulation in the filter.

With Mercedes, unless there have been recent design changes, as a practical matter, high idle should be chosen during initial engine production because post production implementation involves among other things, modification of the CPU. As of 2018 models, Roadtrek orders every Sprinter with the high idle feature. Interestingly, if the Chevy V8 has cruise control, you can implement a high idle option merely by dealer programming with no alteration of the CPU.
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Old 02-22-2018, 08:31 PM   #12
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Look at Advance RV class B units, get it made the way you want it.

KC
That's certainly the good news regarding ARV. The not so good news is that the price of admission is >$330,000.
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Old 02-22-2018, 08:42 PM   #13
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As an alternative, if you are going to be full-timing in the vehicle, why not go with Sportsmobile or Advanced-RV, and get exactly what you want? That way, you have the best of all worlds.
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Old 02-22-2018, 08:47 PM   #14
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Originally Posted by Cameramanlady View Post
Interesting. I just browsed the Coachman website. Most of the Mercedes sprinters have roughly the same layout, except for the ERA 70m (and 70c). I love the design with the larger bathroom in the back and so much storage. All the Coachman options with both the Galleria and the Crossfit lines are pretty much the same with the bed in the back and teeny bathrooms with little storage.
Point taken. Like most B layouts, the bathroom is relatively tight. To some extent it depends upon your perspective. Some folks (count me in) view the inclusion of a bathroom as an irritating necessity and when possible, gravitate to spotless rest rooms in Chevron gas stations. Others feel that the bathroom in a B should be a spacious secluded destination spot.

FWIW, in checking with Smith & Wesson, they still haven't made a gun with a barrel big enough to make me deal with a slideout.
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Old 02-22-2018, 08:52 PM   #15
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Originally Posted by cruising7388 View Post
I think the advantage of the high idle option is misunderstood. Its virtue is that it produces a modest increase in alternator output which is good because depending on the loads involved, it may reduce the period for which the engine has to idle at all. However, it's been pretty well settled that stationary operation at high idle does little if anything toward mitigating particulate accumulation in the filter.

With Mercedes, unless there have been recent design changes, as a practical matter, high idle should be chosen during initial engine production because post production implementation involves among other things, modification of the CPU. As of 2018 models, Roadtrek orders every Sprinter with the high idle feature. Interestingly, if the Chevy V8 has cruise control, you can implement a high idle option merely by dealer programming with no alteration of the CPU.
I think it would be interesting to see just how much extra net output you get from the fast idle, or if the heat cycling of the alternator more would make it not as much gain. With no driving speed fresh air coming in, it may be not nearly as much as it would first appear from the first blast of amps before the alternator heats up an starts to thermal cycle.
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Old 02-22-2018, 09:08 PM   #16
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I did not know that there was a "high idle" option. Interesting! Does everyone offer that option?

So here's a little bit more info. I have a pug. I want to be able to go grocery shopping or perhaps to a movie without worrying that the air conditioning will cut off and kill him. But at the same time I don't want to be one of those people with generators who are spoiling the outdoors being loud as eff.

Don't drink the marketing koolaid... those auto-start are not reliable. You won't want to trust your pet's life on it. Go check their FB groups and read about the horror stories. If it is too hot to leave your pet alone in the RV, then don't.


For most situations, except in the middle of an 100+ degree afternoon,
the exhaust fan and open windows is enough to keep the RV cool. You will need to buy screen insert for the front windows. Of course you will not have the security of a locked van.
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Old 02-23-2018, 12:10 AM   #17
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Cameramanlady, Another Class B rig with that floorplan (slideout and rear bath) is the (no longer made) Leisure Travel Van Free Spirit SS. It doesn't have all the electronic bells and whistles, but you could add those components. Very well-made rigs on Sprinters. And there's a few used listed on RVTrader.com
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Old 02-23-2018, 12:56 AM   #18
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Originally Posted by booster View Post
I think it would be interesting to see just how much extra net output you get from the fast idle, or if the heat cycling of the alternator more would make it not as much gain. With no driving speed fresh air coming in, it may be not nearly as much as it would first appear from the first blast of amps before the alternator heats up an starts to thermal cycle.
No doubt about it. I'll hazard the guess that the idle hot rating for the Nations alternator will support the roof AC but not much more..
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Old 02-23-2018, 11:53 PM   #19
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Originally Posted by Cameramanlady View Post
Interesting. I just browsed the Coachman website. Most of the Mercedes sprinters have roughly the same layout, except for the ERA 70m (and 70c). I love the design with the larger bathroom in the back and so much storage. All the Coachman options with both the Galleria and the Crossfit lines are pretty much the same with the bed in the back and teeny bathrooms with little storage.


I love the 70M layout too, but the deal killer is having to put the slide out to sleep.

You might be interested in the Pleasure-Way Plateau XLMB. Itís slightly wider, but has a 70M like layout, very high quality and no slide!
Plus they have auto-gen start, and lithium. Not quite a replica of roadtrek but other than the galleria the closest you can get.


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Old 02-25-2018, 06:08 AM   #20
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Take a look a the Coach House Arriva. It has a twin bed/King layout with a rear bath and a stand alone shower stall.
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