Good Sam Club Open Roads Forum: Class A Motorhomes: Possible CCC Upgrade
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 > Possible CCC Upgrade

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Williebago

Wichita, KS, USA

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Posted: 06/18/20 08:56pm Link  |  Quote  |  Print  |  Notify Moderator

Wondering what I am missing? It seems like it would be pretty simple and inexpensive. We recently moved up from a 2003 Dolphin on a W22 chassis with 22K GVWR and 26K GCWR to a 2019 Newmar on a F53 chassis with a 24K GVWR and 30K GCWR. Problem is with full water we dropped from 3,300 pounds of CCC to only 1,300 pounds of CCC. So that got me looking at the Ford specs for the F53 chassis and comparing everything between the 24K and the max 26K chassis that both have the same 30K GCWR.

And what I found was that the only apparent difference is the rear axle leaf springs. The 24K has 15,500 pound springs and the 26K has 17,500 pound rear springs. Same front axle and 9,000 pound springs. Same 17,500 pound Dana S17060S rear axle and differential. Same brakes and HydroMax specs and 15" rotors front and back. Same 50,000psi frame steel. Same everything except for rear leaf springs.

If I just change the leaf springs up to the 17,500 pound units I would be back up to the 3,300 pound CCC I have been used to. Since we occasionally travel to football games with "full occupancy" plus cargo we would be at the 3,000+ pound CCC.

So, what am I missing?


WILLIEBAGO

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rk911

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Posted: 06/18/20 09:57pm Link  |  Quote  |  Print  |  Notify Moderator

you can carry 240-gal of water?

what does your coach weigh on each axle as it is loaded for travel? you need to know the actual weight on each axle and then compare them to the published gross axle weight rating for your coach.


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Williebago

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Posted: 06/18/20 10:43pm Link  |  Quote  |  Print  |  Notify Moderator

Rich

The new coach has a posted 1,974 pound CCC less 673 pounds for the water load (also posted) leaving the actual CCC for people and cargo of 1,301 pounds. I have weighed our new coach and it was pretty close to listed dry weight.

I am not really interested in individual wheel or axle weights in my post. The coach has seat belts for 7. That alone is 7 X 200 lb per person is 1,400 pounds.

Will replacing the rear springs increase the capacity by 2,000 more pounds? Seems to me that it would, but what else might I be missing since everything else; axles, brakes, etc. are all the same as the 26K chassis. Will handling or ride quality be adversely effected?

rk911

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Posted: 06/18/20 10:58pm Link  |  Quote  |  Print  |  Notify Moderator

don 't know but i'd talk to the mfg. before i did anything. regarding your axle weights...you really should care as it is possible to be overweight on one axle and still weigh less than the GVWR. i know from personal experience.

good luck.

valhalla360

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Posted: 06/19/20 04:45am Link  |  Quote  |  Print  |  Notify Moderator

Your numbers aren't making sense. Is the CCC 3300lb or 1974? (I looked up online and it shows 3400lb CCC)
Are you really taking 7 200lb people?

A couple thoughts:
- you mention the steel strength that they use in the frame but is the frame the exact same dimensions?
- It might just be the springs that are different and functionally, you can carry more weight but the sticker doesn't change. I can all but guarantee the manufacturer won't sign off on it no matter what the real situation is.


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dodge guy

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Posted: 06/19/20 05:48am Link  |  Quote  |  Print  |  Notify Moderator

Do you really need 75 gallons of water for a football game?

I agree your math and numbers aren't making sense! I'm seeing a 3400lb CCC. Minus 673lbs, leaves you with 2700lbs for people and cargo. That's less, it not enough to worry about and certainly not enough to start changing springs.


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Williebago

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Posted: 06/19/20 06:21am Link  |  Quote  |  Print  |  Notify Moderator

What is really going down here is that our old coach, the 35ft Dolphin, legitimately had about a full 2,000 lb. more CCC than our new 37ft Baystar. I weighed the Dolphin fully loaded several times and was really never close to its full CCC capacity whether we were loaded for a 10 week trip to Alaska or loaded with all the tailgating gear and planning on taking 7 full size adults to a football game.

With the new coach, I do have to be very careful on how it is loaded for each trip. As I said, the sticker says the 80 gallon water capacity is 664 lbs. and is to be subtracted from the CCC leaving only 1,300 pounds for occupants and other cargo.

Also, the frame section and steel strength is exactly the same. Everything is exactly the same on the spec sheets except for the capacity of the rear leaf springs. The raw curb weight of the stripped chassis is 7,381 lbs for the 24K frame and 7,394 lbs for the 26K frame with the same 252" wheelbase.

I know manufacturers constantly struggle with cost creep on every design they put forward to build and sell to the public and chassis manufacturers, in this case Ford, offers a pretty wide varied of chassis capacities and wheel base lengths to accommodate desires of their manufacturing customers, but if the difference in cost is for 13 more pounds of steel in the springs to get another ton of CCC, why not. But my original post is not to be critical of manufacturers about this CCC topic or to disregard the need for any one to not fully understand the loading of front and rear axles for any type of trip one is packing for. Those are both topics for another post.

I just want to know what am I missing in considering replacing the rear leaf springs?

dougrainer

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Posted: 06/19/20 06:28am Link  |  Quote  |  Print  |  Notify Moderator

I would send the request for modification to Newmar. They built the RV and they would be the best resource for a safe correct answer. Make sure you include the chassis VIN and the Newmar 6 digit unit number. Doug

Dale.Traveling

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Posted: 06/19/20 06:28am Link  |  Quote  |  Print  |  Notify Moderator

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.

* This post was edited 06/19/20 06:35am by Dale.Traveling *


2006 Hurricane 31D built on a 2006 Ford F53


Bruce Brown

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Posted: 06/19/20 08:06am Link  |  Quote  |  Print  |  Notify Moderator

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

Thank you.


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Bruce & Jill Brown
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