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Drum roll... (new Solitude 310GK-R weights)

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  • Drum roll... (new Solitude 310GK-R weights)

    Due to the short window between the time we arrived in town, picked up our new 310, and the buyers arrived to take our beloved Reflection 337 away, we did not have an opportunity to weigh the new Solitude 310GK-R empty before we had to move our stuff into it. Then came the pandemic and we got stuck here in Augusta, GA, for the duration. We feel very fortunate, though, that 1) we are retired and don't have to worry about jobs and income, 2) we are near our health care providers and a couple of good tertiary hospitals, and 3) we're still near our GD dealer. As a result of proximity and the pandemic, we spent a long day yesterday back over at the dealer having a washer and dryer installed in the rig (driven by not wanting to frequent the public laundromat at this time - I'll probably do a separate post on the W/D installation).On the way back to the park, I pulled across the CAT scales and took the truck back to the scales after getting set up at the park. Here are the parameters and outcomes:

    We ordered our new 2020 310GK-R from the factory with the following (impacting the empty weight):
    • dual pane windows
    • slide toppers
    • factory solar package
    • MORryde independent suspension w/ electric-over-hydraulic disc brakes (GD pulled to MORryde and back for us prior to transport to dealer)
    I have verified that the MORryde 7,000 lb. suspension units with hubs/rotors, sub-frame, and all associated equipment add 500 lbs. to the unit weight over the Dexter 7K axles, hubs, springs, MORryde equalizers, hangers, etc. - in other words, the OEM suspension. Since the additional weight of the MORryde suspension system is not on the chassis and the MORryde installation actually strengthens the frame with the MORryde sub-frame, I have added 500 lbs. to my working GVWR for the trailer, using 15,500 lbs. rather than the 15,000 lbs. on the sticker (I know - has nothing to do with the legalities).

    The night prior to pulling to the dealer for the installation, I dumped all waste tanks, filled the fresh water tank, and stowed the plumbing equipment. For purposes of the weigh-in, I'm not getting my panties in a wad over what tank(s) the 100 gallons of water on board is in. It's just 835 lbs. of water. We also have approximately 200 lbs. of non-perishable food stored under the dinette table and in the two ottoman storage benches with which we replaced the dinette chairs. The washer and dryer together weigh about 200 lbs. (roughly 150 for the washer and 50 for the dryer). There are two Battle Born 100 Ah batteries in the front compartment and the usual tools, outdoor chairs, and RV accessories in the basement (we really travel pretty light). We carry four seasons' worth of clothes but we are minimalists (not in how much skin we cover, though - just how much we carry to do it). We have no 30 lb. KitchenAid appliances in the RV - they're all in storage.

    So... here are the numbers.
    Rating Spec Truck Scales (w/o trailer) Reserve Capacity 4/7/20 Rem Cap
    Truck GCWR 30,000 8,740 21,260 25,020 7,520
    Truck GVWR 13,300 8,740 4,560 12,020 1,720
    Truck GAWR FRT 5,250 4,860 390 4,900 290
    Truck GAWR RR 9,000 3,880 5,120 7,120 2,380
    Truck Tires - front 6,390 4,860 1,530 4,900 1,490
    Truck Tires - rear 11,640 3,880 7,760 7,120 4,520
    Trailer axles 14,000 13,000 1,000
    Est pin weight 3,280
    GVWR/Est trailer weight 15,500 16,280 (780)
    Our plan after seeing the numbers is to donate whatever extra food we haven't consumed by the time we can travel again and travel with 1/3 tank of fresh water (to have for use en route). That will get us below 15,500 lbs. Even at current weights, it's 1,000 lbs. under the suspension ratings and only has 3,280 lbs. on the pin (only about 100 lbs. more pin weight than the Reflection 337 - and that's with a W/D!).

    So - rationalization or fair deduction?

    Rob
    Rob & Laura
    U.S. Army Retired (Rob)
    2012 F350 DRW CC Lariat PS 6.7, PullRite OE 18K
    2020 Solitude 310GK-R, MORryde IS and disc brakes, solar, BB LiFePO4, DP windows
    (Previously in a 2016 Reflection 337RLS)
    Full time since 08/2015

  • #2
    My understanding of how weights are determined on vehicles is by weighing the "sprung" or suspended weight. Since suspension is by nature unsprung, increases or decreases in unsprung weight do not effect cargo capacity. In other words, you don't get 500 extra for your cargo by saving it in your suspension. Less unsprung weight is good for other reasons but it does not help in cargo capacity.
    2017 310GK

    Comment


    • #3
      Originally posted by JeffC View Post
      My understanding of how weights are determined on vehicles is by weighing the "sprung" or suspended weight. Since suspension is by nature unsprung, increases or decreases in unsprung weight do not effect cargo capacity. In other words, you don't get 500 extra for your cargo by saving it in your suspension. Less unsprung weight is good for other reasons but it does not help in cargo capacity.
      Jeff,

      I'm not adding the 500 lbs. to theoretically increase the CCC - just to the base weight of the trailer (and thus to the maximum allowable weight of the trailer). Since the added weight of the suspension system is unsprung, it should not be subtracted from the CCC. I understand full well the difference between sprung and unsprung weights on vehicles.

      Rob
      Rob & Laura
      U.S. Army Retired (Rob)
      2012 F350 DRW CC Lariat PS 6.7, PullRite OE 18K
      2020 Solitude 310GK-R, MORryde IS and disc brakes, solar, BB LiFePO4, DP windows
      (Previously in a 2016 Reflection 337RLS)
      Full time since 08/2015

      Comment


      • #4
        Originally posted by Second Chance View Post
        So - rationalization or fair deduction?
        I'm can't come at this from an unbiased position since I have done almost exactly the same thing.

        There will be some naysayers, but with the MORryde suspension and disc brakes you have a far more capable Solitude than a standard production model. Yes, yes...someone will point out that nothing changes the label on the trailer and that is true, but there is no denying your trailer is a much more capable unit with the improvements you installed.

        Forum moderators are not GD employees--we are volunteers and owners presumably just like yourself. Unless specifically mentioned otherwise, we have nothing to gain should you choose to purchase a product or engage a service we discuss on this forum.

        2017 Ford F-350 DRW, '19 315RLTSPlus

        Comment


        • #5
          Originally posted by Second Chance View Post
          Rating Spec Truck Scales (w/o trailer) Reserve Capacity 4/7/20 Rem Cap
          Truck Tires - rear 11,640 3,880 7,760 7,120 4,520
          Est pin weight 3,280
          Remind me how pin weight is calculated . . .

          -Steve
          2018 Solitude 310GK, disc brakes
          Morryde SRE4000/XFactor with heavy duty shackles, V-Brackets in spring hangers
          2012 Ram 3500 SRW 6.7 Diesel, air bags
          18k B&W Companion, non-slider
          640 watts solar, 400 amp-hour Lion Safari UT 1300 battery bank
          Aims 1500 watt inverter/charger with ATS
          Somerset, WI

          Comment


          • #6
            Originally posted by Second Chance View Post
            So - rationalization or fair deduction?
            I say fair deduction.

            Just for some additional points of reference, the UVW for my 2020 310GK-R was 12,910lbs. The combined "axle" weight was 10,458lbs. Mine does not have DP windows or slide toppers but does have factory solar and MORryde suspension/disc brakes.

            -Brian
            Brian & Kellie
            2020 Grand Design Solitude 310GK-R, FBP, MORryde IS, 1,460w solar and 540ah BBGC3
            2020 Ford F-350 Platinum SRW PSD Tremor, 60g TF fuel tank, Hensley BD3-F air bag hitch

            Previous setups:
            2019 Grand Design Solitude 373FB-R, 2019 Ford F-350 Platinum DRW Powerstroke, Hensley BD5 air bag hitch
            2016 Grand Design Reflection 318RST, 2016 GMC 3500 Denali SRW Duramax, Hensley BD3 air bag hitch

            Comment


            • #7
              Originally posted by steve&renee View Post

              Remind me how pin weight is calculated . . .

              -Steve
              It's the weight of the truck with the trailer attached minus the weight of the truck without the trailer. The difference is the weight the pin of the trailer is putting on the truck.

              Rob
              Rob & Laura
              U.S. Army Retired (Rob)
              2012 F350 DRW CC Lariat PS 6.7, PullRite OE 18K
              2020 Solitude 310GK-R, MORryde IS and disc brakes, solar, BB LiFePO4, DP windows
              (Previously in a 2016 Reflection 337RLS)
              Full time since 08/2015

              Comment

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