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Old 11-20-2015, 01:02 PM   #1
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Propane Capacity

I had read a post where someone had a larger propane tank installed at factory. I just inquired to FR and was told by Warranty Administrator Russel Stull, that FR would not accommodate that as it skews the overall weight and balance of the unit. He also said MB does not allow extra stabilizers or leveler a on front. Just FYI as these seem to be two areas some want to improve.

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Old 11-20-2015, 03:44 PM   #2
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I had read a post where someone had a larger propane tank installed at factory. I just inquired to FR and was told by Warranty Administrator Russel Stull, that FR would not accommodate that as it skews the overall weight and balance of the unit. He also said MB does not allow extra stabilizers or leveler a on front. Just FYI as these seem to be two areas some want to improve.

Dogpa
That explains why the 4-point automatic leveling system is not an option on the MBS line. Thanks.
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Old 11-20-2015, 04:42 PM   #3
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How big of a tank comes on the Solara? 10 gallons?
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Old 11-20-2015, 06:25 PM   #4
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I think mine is a 12 but too small to consider hooking a quick disconnect for a BBQ run the gen stove and heater. Guess will carry an extra tank.

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Old 11-20-2015, 06:52 PM   #5
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How big of a tank comes on the Solara? 10 gallons?

The current MBS models come with 9.8 gals. At 4.24#/gal., that's 41.55#. At 80% fill capacity, that's 7.84 gals. or 33.24#.

According to Onan specs on LPG usage for the 3.6K generator that comes with these units, the run time (excluding any furnace, stove or oven usage) is as follows (usage specs from Onan, hours calculation is mine):

No load: 0.4 gal. or 1.5 lbs./hr. Run time: 19.6 hours

Half load: 0.6 gal. or 2.4 lbs./hr. Run time: 13 hours.

Full load: 0.7 gal. or 3.1 lbs./hr. Run time: 11.2 hrs.

Someone please check my math. However I used gallons in each case. If you look at the Onan numbers, they are not consistent across the range between gallons and pounds. They used a conversion factor ranging from 3.75 to 4.4 lbs./gal. for reasons unknown.


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Old 11-20-2015, 07:26 PM   #6
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For some reason mine came with 20 gallons. On a spec sheet it said optional. However, I did not ask for it. Perhaps on the Prisms with a LP genny they bump it up
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Old 11-20-2015, 07:52 PM   #7
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The new Isata MBS comes with a 20 gallon tank as well...

As for front levelers M-B does not allow any welding on the frame by up fitters. I was told by Bigfoot they are working on a M-B approved front set. It will supposedly allow the reuse of the FR rear "stabilizers" as part of the upgrade.
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Old 11-20-2015, 08:05 PM   #8
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tank size

I believe the 9.8 gallons is the net size, not the gross. We are about to order a 24S. I went to the Hershey PA show and talked to the factory rep about this. My concern was the tank is so small if you boondock, especially if you need to run A/C. The factory rep said they we considering offering a larger tank, but nothing was firm. He also said the tank was 12.2 gallons which yielded 9.8 gallons of useful capacity.
We decided to go forward, and will add an Extend-A-Tank fitting and travel with a spare 20 lb tank when we go dry. Then we can run off the portable tank and easily swap tanks without having to find a refill station.
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Old 11-22-2015, 07:43 PM   #9
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Quote:
Originally Posted by MNtraveler View Post
The current MBS models come with 9.8 gals. At 4.24#/gal., that's 41.55#. At 80% fill capacity, that's 7.84 gals. or 33.24#.

According to Onan specs on LPG usage for the 3.6K generator that comes with these units, the run time (excluding any furnace, stove or oven usage) is as follows (usage specs from Onan, hours calculation is mine):

No load: 0.4 gal. or 1.5 lbs./hr. Run time: 19.6 hours

Half load: 0.6 gal. or 2.4 lbs./hr. Run time: 13 hours.

Full load: 0.7 gal. or 3.1 lbs./hr. Run time: 11.2 hrs.

Someone please check my math. However I used gallons in each case. If you look at the Onan numbers, they are not consistent across the range between gallons and pounds. They used a conversion factor ranging from 3.75 to 4.4 lbs./gal. for reasons unknown.


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tanks are 12.2 gals, 80% fill gets you to 9.6gals net. I added an extend-stay fitting and bought a composite tank thru amazon (much lighter) to carry as an extra. I added a low pressure quick connect for my grill. It's the generator that uses the most LP, but when you need it (a/c in the summer while traveling in hot weather) you'll probably be willing to fill up more often. Sprinters are a series of compromises, to gain the agility of the smaller form factor.
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Old 11-23-2015, 08:58 PM   #10
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Sprinters are a series of compromises, to gain the agility of the smaller form factor.
Very true... To avoid this particular compromise I went with the optional diesel generator.
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