Way over weight

[Roadyacht1]

I don’t know how these sleazy dealers can sell a coach with such a small NCC.

This is one of the first numbers that I look at. My 2000 DSDP 38’ has nearly a 5000 # NCC. The difference in empty weight and max weight, GVWR is NCC Net Carrying Capacity. So many coaches, when you fill the tanks and put your groceries and luggage aboard you are near, at or over gross! When I ask a sales person for the NCC half the time they either don’t know what I mean, or they would rather not talk about it. Look out.
Another one to watch is the wheel base to length ratio. Mostly the rear overhang. If it’s a lot it can really effect your handling ability, especially in an emergency maneuver. Some coaches look like nearly half of the chassis is hanging behind the rear axel. Bad.

[NeilV]

Originally Posted by Highway 4x4

So my bare weight is 6900. Add everything to that. But I have 2, 5200 pound axles and another 1300 pounds is on the tongue. Say my going down the road total weight is 8500. Then 8500-1300= 7200 is all that's on the the tires. But my trailer is only rated to be GVWR 8700. I am pretty sure the GVWR includes the tongue weight that is, weight not on the axles. I think my truck is rated to tow about 17,000 so I am good.

Going by axle capacity can be misleading since that does not represent the capacity of the springs, frame or coupler installed on the trailer. The payload is based on the total package and not just the axle and tires.

When we service a trailer with a failed axle in the boat yard many times we use a heavier duty axle than specified since the cost difference is minimal to non-existent however that does not automatically increase the capacity of the trailer but just gives a greater margin of safety regarding having an axle failure during an accident or extreme conditions.

[FastEagle]

Originally Posted by dosxx

Maybe someone can educate me. Regarding OCCC, if you are below GAWR on both axles, you are below the GCWR for your rig and toad, but 5% over on your GVWR what is the problem?

As I see it, no issue for the suspension on each axle since you are below rated weight. No issue on drive train or brakes as you are below the rated weight it will move or stop.

So what does the GVWR really mean. I've asked that question of the chassis mfg and the RV mfg and neither could point to an issue. Thus it seems OCCC is being restricted by an arbitrary number?

What am I missing?

GVWR is set by the vehicle manufacturer and can only be changed by them or a certified vehicle modifier.

GAWRs for motorized vehicles are inherently set higher than the GVWR they are supporting. That method is called "load capacity reserves".

The gross vehicle weight rating, or gross vehicle mass is the maximum operating weight/mass of a vehicle as specified by the manufacturer including the vehicle's chassis, body, engine, engine fluids, fuel, accessories, driver, passengers and cargo but excluding that of any trailers.

[Zymurgest]

Originally Posted by Cumminsfan

Have you ever weighed your trailer loaded?

Usually I'm loaded after I've setup ;^) But usually, and customarily, you should not only weigh each axle, but also each tire to ensure that side to side weights are balanced as well as the fore and aft weights of what the CAT scales will do. Safe, and hoppy travels from the [Mod Edit] Boondocking Brewer™!

[Dave Pelletier]

Unfortunately manufucturer's don't spend a bunch of time or engineering on all this.

My 2020 21RBS has a GVWR of 7150 according to the sticker on the side. It has 4000 lb Dexter axles and Goodyear load range E tires. the latest brochure dated March 2020 shows a GVWR of 8,250 for the same 21RBS with the same axles, same tires and same frame..... In fact the 21RD shows 7200 lbs GVWR but it has 3500 lb axles.

....so I'm guessing that there was just an arbitrary change to raise the GVWR for marketing purposes with no actual hardware changes. I won't be worried if I happen to load up to 8,000 lbs GVW in my trailer which will be well under the GAWR and tire ratings.

....of course I'd never suggest that anyone else ignore their stickers.


And running without a full tank of water is a non-starter as one of the big reasons we bought an ORV was to boondock; we almost never have hookups.


Cheers,
Dave

[FastEagle]

Originally Posted by Dave Pelletier

And running without a full tank of water is a non-starter as one of the big reasons we bought an ORV was to boondock; we almost never have hookups.


Cheers,
Dave

The amount of an RVs potable water tanks, gray and black water tanks is always published. It's also published that the contents of those tanks is considered CARGO. The owner/consumer is responsible for ALL cargo weight.

[Dave Pelletier]

Originally Posted by FastEagle

The amount of an RVs potable water tanks, gray and black water tanks is always published. It's also published that the contents of those tanks is considered CARGO. The owner/consumer is responsible for ALL cargo weight.

Yes I know all that; I guess I'm missing your point?


Dave