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Old 07-24-2017, 02:48 PM   #1
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Default Custom Promaster floorplan

its clear that in the budget a new B just isnt going to happen. And the only way to get a B for us is to do it ourselves with a used Promaster. I dont mind doing this, its just obviously time consuming.

Anyway.... Id like some input on this floorplan. The height of the cross bed is such that it would be a easy thing to get over when going to the rear. And I think this bed configuration really opens up the living space. The cross bed I imagine would take up around the same position as the water tank seat in the Travato G.

The beds should be comfortable for us at only 5'8 tall. That long countertop I want to make so that there is room under the one end to give my dog extra laying room. One fantastic fan in main area and a roof AC. Probably just the smaller fan in the bathroom. I want to do roof solar but my brain isnt there yet. Dry bath.

A table is one thing im unsure of. I could either push the galley down making it smaller to fit a table near the L of the beds. Or just use those wooden portable tables.



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Old 07-24-2017, 02:56 PM   #2
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Interesting idea, but I think I would make the center of the crossbed hinged or removable for travel time or other daytime use where a table could replace it if wanted.
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Old 07-24-2017, 03:16 PM   #3
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Yea I could probably do one of those one leg tables that can push down to become part of the bed platform. If the section of bed fits in the promaster little upper compartment that would be nice. Id lose a bit of storage though under that bed.
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Old 07-24-2017, 04:12 PM   #4
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There are few spaces that are more personal and intimate than a Class B, given its incredibly small size. Therefore it's difficult to comment on anyone else's design - it's entirely a matter of personal use objectives and preference.

I'm a fan of placing a one-sided wet bath directly behind the driver's seat - in fact, I wouldn't have a rig without that configuration. The million dollar view will always be straight out the back doors given the kind of camping that my husband and I want to do, and given the kind of off-grid professional work that we've designed our rig to allow me to do.

When the side-to-side rear bath models first started coming out, my husband and I were among those Class B owners who were horrified. We couldn't understand why anyone would want to concede that immersive opportunity to a toilet. But it's totally a personal preference.

Also, if you place the water tank under the bed, it's on the opposite side of the galley. Typically that is not done. If you flip the toilet-shower arrangement and place the tank under the galley, it might make for easier PEXing for you.

Here's an image quilt of million dollar views, a couple of them mine, but most of them belonging to other van owners:

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Old 07-24-2017, 04:29 PM   #5
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Some great views there! We always wanted one with a couch/bed directly across from the big side door with a sliding screen door.

I guess I can put the water tank basically in the same place as the Travato G. On the side of the galley and door I dont want any obstructing view cabinets. I plan to put a window there for when the side door is closed. We arent fans of cabinets above window height up front because we feel it makes it more closed off feeling. If the water tank is where the 59G has theirs, how does it fill with a outside fill on the opposite side? Though I guess I can just fill it directly without a outside port.

Currently I see used 2500's with 159" wheel base are much easier to find in PA then the 3500 and a good 5k or more cheaper. Thats sacrifices 15 inches of length. If I went that route id probably have to cut out the shower and put a storage cabinet in the bathroom instead. Maybe just do what the 59k does. Of course not having a shower cuts out the need for a hot water heater and the additional plumbing. We always wanted a shower in a B, but I guess when you figure that every RV shower experience will suck its not a giant loss.
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Old 07-24-2017, 06:21 PM   #6
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The challenge you will find with a rear bath configuration is that, to have waste tanks of a desirable size, they will have to go under the floor in the rear of the van. That space on many vans is either used for a generator or spare tire. If you are willing to give up those two things, then you have lots of flexibility of fitting a 20-25 gallon gray tank and the standard 10 gallon black. If you go with a cassette, then you have more room to work with.

I'd also advise you to install all your fresh water piping above the floor, inside the heated space of the van.

Good luck with your build!
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Old 07-24-2017, 06:53 PM   #7
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I feel like in this build with the bed layout I could still put the fresh water where I have it and just run the lines under the beds and then under the flooring I put down. It would make filling it easier Id think.

I wont have a generator. Im not sure where the spare tire goes on the Promaster, but if there is one I may drop that too in favor of a leak kit and roadside assistance.

What are your thoughts on a combo black and grey tank instead of two separate tanks? Ive seen a couple B's do that but Im not sure of the pros and cons. I assume I could plumb in a tank clean out to help rinse the waste hose after dumping, since you wouldnt be able to do the typical black first grey second dump.

And talking about it more, we may decide to not do a shower not matter what length we get. Just have a enclosed toilet on the rear of one side with a door similar to the one on the 59G.
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Old 07-24-2017, 07:17 PM   #8
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I would not do a combo tank.

For one, if you have a backup, sewage comes up all your trains, making a very smelly and nasty situation. If any sewage comes up your drain lines, it will be almost impossible to get the stink out of your van.

Second, usually the case is you fill your grey tank much faster than your black. Generally that one needs dumping first. If you get where you can't find a dump station, you can dump that gray water out on the ground if necessary. You can't do that if there is sewage in it.
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Old 07-24-2017, 08:03 PM   #9
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Great point I didnt even think of that disgusting possibility lol.
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Old 07-24-2017, 09:47 PM   #10
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I am a huge fan of a combined tank. I have owned both, and given a choice I would go with a combined tank hands down. I'm not sure any of the naysayers have ever actually had one. This has been discussed in great depth, so a quick search will reveal all the arguments pro and con. No point in repeating it all here.

But, to reply directly to Wincrasher's points:
1) It is not very difficult to avoid a grossly-overfilled tank, which is the only way to get a backup. Plus, of course, all else being equal, you have much more tank capacity with a combined tank. Moreover, it is not true that you would get backup in all drains. You would only get it in the shower floor, which is not that big a deal. You would get plenty of warning before anything very disgusting were to occur. Then you would just drain and run the shower.

2) If you think through the logic of the "which tank fills first" argument, you will see that it makes little sense. With a combined tank, you don't have to worry about which one fills first--the space is always available for whichever is needed. This is one of the biggest arguments in favor of a combined tank. As for dumping your grey tank on the ground--I'm not sure how to respond to the claim that that is ever ok.
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