Possible CCC Upgrade

You also might not be taking in on how much the two couch weight. A old one and the new one.

"Might be smart to weigh your rig loaded the way you want to run it. If the front axle is over with that load, what do you gain dicking around with the back?"

My apologies JRscooby, I really need to learn how to do the "Quote function" on this board.

The reason for increasing the rear axle load is on an extended length gas coach, 37ft in my case, there is considerable rear overhang and I have a lot of behind the rear axle basement storage. If I load all of the tailgate stuff as far back as I can and put the 100 lb charcoal grill on the 2" receiver hitch it unloads the front axle due to the principle of lever and fulcrum. Does not change anything with regard to the maximum CCC I have to work with however. And based on the same physics it starts rapidly adding weight to the rear axle.

I am pretty conscious about weight, axle overloading, tire pressure and capacity, balance, etc. not only for safety, but handling as well. We use our coach a lot and in a wide variety of ways. Not really practical to weigh all the time so the goal is to know my best loading strategies and know I have plenty of left over capacity on each axle.

But, in doing some more research and analysis, I believe the best solution for me will be to add rear axle air bags and an on board compressor so I can adjust the pressure from the cockpit. I can use them to add the weight capacity if needed and also to jack up the rear end if I see a gas station or shopping mall driveway approach that looks iffy on dragging the tail. This would avoid the stiff spring when running unloaded and give me easy on demand flexibility. Since every other component is exactly the same I am pretty sure the chassis can handle the few times I need the other pounds of CCC.

Might be smart to weigh your rig loaded the way you want to run it. If the front axle is over with that load, what do you gain dicking around with the back?

Yes, just upgrade the springs. Or just add Sumos. No reason to over-think this. You've correctly identified the component driving the lower GVWR. The sticker only reflects the configuration as it left the factory, and is intended to inform YOU how it was configured. Nobody is going to weigh you, your insurance *probably* doesn't exclude changing springs (but check! Cheaper online policies exclude coverage if there are ANY suspension modifications), and the only thing illegal is if you tried to mis-represent the original GVWR at the time of resale.

674 divided by 8.3 equals 81.20481927710843 gallons.

Does that include full hot water tank plus water in lines?

My Newmar has a 75 gallon fresh water tank and 10 gallon hot water tank plus water in lines. That total 705.5 lbs. plus water in lines. I have the same chassis as you. Mine has 10 seat belts and sleeps 10. Only 2 use it.

So it looks like your new coach (the house part) is probably heavier than your old one. Things like the type of wood used in the cabinetry, the number of cabinets, the size of the slides, and a myriad of other things are eating up your carrying capacity. While there is nothing you can do about the ratings given by the chassis manufacturer you can certainly allow yourself some capacity by changing the springs, or adding a leaf or two. It won't change the rated capacity, however. You say the axles are the same rating, but make sure the wheels and tires are rated for the extra weight as well.

Williebago,
Can you post a picture of the CCC sticker Newmar put in the unit? It would help us all understand better.

Bruce,
Have not gone thru the process to post a picture here, but here is what the label in the cabinet says:

"Cargo Carrying Capacity (CCC) Computation"
GVWR = 24,000 pounds
Minus UVW = 21,922 pounds
Minus Propane (25 gal.) = 105 pounds
CCC for this motorhome = 1,973 pounds
Combined weight of occupants and cargo should never exceed CCC.
A full load of water equals 674 pounds of cargo. (8.3 lb/gal)
Dealer installed equipment and towed vehicle tongue weight will reduce CCC

This is pretty much verbatim what the label says along with definitions of GVWR, GCWR, UVW, and CCC and the necessary liability warnings, etc.

I don't think anything you do will change the stickers.

So, if the mods you propose doing make it more capable in your mind, then I say just do it.

Mike

Williebago,
Can you post a picture of the CCC sticker Newmar put in the unit? It would help us all understand better.

Thank you.

What are you missing? That Ford often makes mistakes, and posts a disclaimer for such, in the consumer literature and listed part numbers in addition to not publishing every technical detail and differences between chassis models so proceed at your own risk.

Newmar lists the approximate CCC for a 2019 Baystar 3626 at approximately 3426 lbs. Where did the 1974 number come from? 3426 gives you 489 lbs for each seat belt. Newmar also makes mistakes in thier literature but I would expect the CCC of a Baystar 3626 to be fairly close to 3400 lbs +/- a few percent of the weight.