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Hitch setup

Old 06-13-2018, 03:58 PM
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I have a 2014 F150 EcoBoost, 3.73, Max towing package and I'm towing a 7200 pound travel trailer. Visually everything looks fine, the truck, I'm within payload and GVWR but slightly over on RGVWR. I have a couple of odd things happening:
1. Weights label on camper says UVW = 7484, CAT scale says 7240. I am fully loaded for a camping trip so I figure I should heavier not lighter than Camper UVW.
2. I measured the front fender with the camper loaded hitched, and unhitched. All measurements are spot on and visually camper and truck are level.

Any idea on why I'm out of spec on RGVWR? For reference here are the CAT scale measurements and WD fender measurements:

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Old 06-13-2018, 06:20 PM
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My trailer is the same. Listed UVW is 4,600. It was 4,500 on the scales (3,700 on trailer axles) wet with, 60# propane, and packed for a weekend camping trip.

Your other question is easy. You're out of spec for RGAWR because you have too much weight on you rear axle! You could take a little weight off the rear axle by tightening your spring bars a smidge. That or actually take some weight off the truck.
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Old 06-13-2018, 08:03 PM
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dup post

Last edited by smokeywren; 06-14-2018 at 10:04 AM. Reason: delete dup post
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Old 06-13-2018, 08:07 PM
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37.75 Tow vehicle loaded for trip but still uncoupled from camper
38.25 Tow vehicle c0upled WD on
----------
0.50 = half inch rise

Ideal is closer to zero rise, and at most about a quarter-inch rise. So I agree with Gladehound. You need to tighten the spring bars a smidgeon to remove more weight from the rear axle, and get the rise in the front end down to around zero to a quarter inch.

1. Weights label on camper says UVW = 7484, CAT scale says 7240
How did you determine what the CAT scale says? It won't give you UVW. It gives you trailer axle weights. If your trailer axle weigh was 7240, your trailer weighed about 7900 to 8,000.

Last edited by smokeywren; 06-14-2018 at 09:59 AM.
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Old 06-14-2018, 12:00 PM
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I got UVW of 7484 from the camper's door sticker and the CAT scale said 7240 for the camper axles. With empty tanks I figure we loaded about 300 pounds of cargo so I was expecting closer to 7800 (although 7900 isn't unreasonable either). That said, I don't think I weighed correctly. I lined up my axles roughly in the middle of each scale which meant about 3 feet of camper was on the same platform as the truck's rear axle. By doing this I think a portion of the camper's weight was incorrectly accounted for on the truck. Correct me if I'm wrong but I think I just need to line up the hitch at the platform line and perform the 3 measurements or uncouple the camper and truck making sure that truck and camper are wholly on their own platform.

I agree with your assessment, I may need to raise the spring bars 1 (which is all I have left) to adjust closer to level. Before I do anything I'll reweigh.
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Old 06-14-2018, 08:05 PM
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Originally Posted by cheil View Post
I got UVW of 7484 from the camper's door sticker and the CAT scale said 7240 for the camper axles. With empty tanks I figure we loaded about 300 pounds of cargo so I was expecting closer to 7800 (although 7900 isn't unreasonable either).
Camper trailers (travel trailers or TTs) have tongue weight (TW) of 10% to 15% of gross trailer weight, and most TT have 12% to 14% TW, averaging about 13% TW.

Your trailer with 7,240 on the trailer axles and with 12.77% TW would have gross trailer weight of a bit over 8,300 and TW of 1,060. (1,060 divided by 8,300 = 12.77% TW; 8,300 trailer weight minus 12.77% TW = 7,240 trailer axle weight. So your trailer with about 300 pounds of onboard cargo is a lot heavier than you were estimating.

That said, I don't think I weighed correctly. I lined up my axles roughly in the middle of each scale which meant about 3 feet of camper was on the same platform as the truck's rear axle. By doing this I think a portion of the camper's weight was incorrectly accounted for on the truck. Correct me if I'm wrong but I think I just need to line up the hitch at the platform line and perform the 3 measurements or uncouple the camper and truck making sure that truck and camper are wholly on their own platform.
Consider yourself corrected. It doesn't matter how the rig is positioned on the scale pads as long as all the tires are somewhere on the correct scale pad. Tongue location doesn't matter as long as the tires are fully on the correct pad. If you position the trailer axles as for forward on the pad as you can, with the tongue and coupler hanging over the pad for the rear axle, the axle weights will not change compared to positioning the trailer axles as far back as you can get them while all axles are still on the correct pad.

Last edited by smokeywren; 06-14-2018 at 08:10 PM.
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