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10-25-2024, 11:28 AM
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#1
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Montana Fan
Join Date: Mar 2018
Location: Atlanta
Posts: 385
M.O.C. #21337
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2024 Montana 3132RL - Freshwater capacity
Hi,
I was under the impression we have 70 gal freshwater capacity.
As we use the Monti at the moment of the grid I was confused that I could not get more 6 gal jugs into the freshwater tank and bought a flow meter.
Attached results after filling my empty freshwater tank.
Am I missing something?
Best idea I have that the hot water tank is calculated into the 70 gal
Thanks for input
Mike
__________________
Montana 3123RL Legacy 'Boon-docking Edition'
RAM 3500 Mega Cab Cummins Diesel DRW
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10-25-2024, 12:44 PM
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#2
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Site Team
Join Date: Sep 2017
Location: Oro Valley
Posts: 4,111
M.O.C. #20477
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The spec has changed from 66 to 70. The tank is 50 and the rest is in the water heater and lines. So only about 50 easily usable.
__________________
Zack and Donna plus Millie and Ranger
2018 3160RL
"Life is too short to stay indoors, enjoy the ride!"
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10-25-2024, 12:51 PM
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#3
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Montana Master
Join Date: Jan 2018
Location: Granger TX
Posts: 2,687
M.O.C. #21044
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The 2024 specs online say 70 GALLONS!
I scrolled thru past models just to compare…
2023 models - 70 gals
2022 2021 2020 - 66 gals
2019 and older were 66 gal
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MikenDebbie Aggie ‘77 in the sticks near Austin TX
2019 Chevy 3500 High Country DRW
2018 Montana 3921FB
Aussie Gus + Texas Heeler Jimmy
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10-25-2024, 08:23 PM
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#4
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Seasoned Camper
Join Date: Mar 2021
Location: San Pedro
Posts: 80
M.O.C. #28338
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I had the same revelation with my 2022 3131CK…fresh tank full at about 51-52 gallons. Learned that the water heater (12 gal) is included in the 70 calculation, but still find it hard to believe that the missing 6-7 gallons could. E on the water lines, but that’s what I understand. Frustrating as so many other similar RVs from other companies have far larger tanks all around.
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Neil & Gail
2022 F350 DRW
2022 Montana 3231, Legacy, Cobalt FBP, 1,200-i-L solar
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10-25-2024, 08:35 PM
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#5
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Montana Master
Join Date: Mar 2021
Location: Western NY
Posts: 565
M.O.C. #28430
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3 gallons of pink fills my water lines and then some. Never measured how many gallons of water to fill the tank.
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Mark & Karen
2021 3121rl - slide toppers, cottage white, X-Factors, disc brakes, 300ah of Lithium, DC/DC charging, Gen-Y pinbox. 2021 F-350, 6.7L, SRW CC LB - B&W Companion
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10-26-2024, 02:52 AM
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#6
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Montana Master
Join Date: Oct 2019
Location: Jacksonville
Posts: 2,285
M.O.C. #25165
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On my 2019 the spec sheet shows 66 gallons fresh water "capacity", which I learned was 12 gal in the water heater, 52 gal in the fresh tank and 2 gal in the lines. It is quite misleading and it seems most salespeople don't realize that either.
Your flow meter seems spot on with my experience.
__________________
Robert & Diana McNeal
2019 Montana Legacy 3791RD 20th Anniversary Edition
2014 F350 4x4 6.7L SRW
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10-26-2024, 06:11 AM
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#7
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Montana Fan
Join Date: Mar 2018
Location: Atlanta
Posts: 385
M.O.C. #21337
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OK, cool, Thank You
__________________
Montana 3123RL Legacy 'Boon-docking Edition'
RAM 3500 Mega Cab Cummins Diesel DRW
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10-30-2024, 01:16 PM
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#8
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Montana Fan
Join Date: Jan 2021
Location: Coloma, Wisconsin
Posts: 210
M.O.C. #28036
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Same here flow meter fill fresh water 50-51, 12 gallon water heater & a couple gallons in the lines = 66 2019 3121RL
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Chuck
2019 3121RL 35 ft., 2020 3500 Dodge Ram SRW, Cummins 6.7 HO, Air Bags - Air Lift BT Wireless Compressor, Coloma, Wisconsin
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10-30-2024, 01:26 PM
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#9
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Established Member
Join Date: Dec 2023
Location: Denver
Posts: 14
M.O.C. #33717
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Our 2022 3121RL also advertised 66 gallons. I could not get more than about 35 gallons of useable capacity from the fresh tank. I've measured 12 gallons in the water heater, but only about 1/2 half to 1 gallon in the water lines. It didn't add up. I ripped open the belly to find out why.
I was very disappointed at what I found: a 40 gallon fresh tank that was so poorly installed with a sagging belly so that almost 5 gallons of water was stagnant and couldn't be drained or sucked up by the water pump!
I then installed lateral braces to fix the sagging belly so I could use all 40 gallons. That's still disappointingly little capacity, so I decided to use the cavernous empty space in the belly to install a second 40 gallon water tank. We now have 80 gallons of fresh water plus 12 in the water heater, and I added a 0.7 gallon accumulator tank that reduces the cycling of the water pump with a side benefit of making it almost silent.
I've attached a picture where I tried to get perspective of how badly sagging the water tank was.
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