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Old 11-14-2017, 09:26 PM   #1
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Propride and Reducing Tongue Weight

tongue weight with Propride Question:

trailer dry weight with propane tanks 6,165 lbs
hitch weight dry 645 lbs
Max tongue weight 890 lbs
Propride weight = 200 lbs
trailer dry weight + Propride = 845 lbs tongue weight
Add battery to tongue weight and I'm guessing tongue weight is near maxed out.
GVWR of trailer is 7500 lbs
6,165 + propride + tanks + battery only approx 6,415 lbs
full tongue weight of 890 with dry trailer = 14%

Problem/Question: I can't add anything in the storage near the tongue (in front of the axles) b/c I am maxed out on tongue weight.

My understanding is that I can add weight behind the rear axles to decrease the tongue weight so long as the tongue weight does not go below 10%. (Ford recommends between 10 &15% tongue weight of trailer). This would then allow me to add more weight to the front of the trailer with "stuff" - again so long as I don't go over the 15% tongue weight and 890 lbs max.

Would have loaded trailer with 7,415 lbs
6,415 trailer and equipment + 1,000 lbs stuff = 7,415 lbs
1,000 lbs of stuff would be mostly behind the axles and some in front of axles to keep tongue weight down to something less than 890 (max for TV) but more than 740 lbs.

Is this correct, by loading trailer in the back it will reduce the tongue weight?
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Old 11-15-2017, 05:58 AM   #2
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Steve,

Welcome!!!

As for loading behind the axles vs in front, yes- loading behind the axles will reduce the tw. Think if a see-saw where the axles are the pivot point.

Understand this though: the 10-15% is a suggested range that includes open, utility or flat he style trailers!!! A high walled, rolling brick tt usually needs 12-15% tw of the total loaded tt weight. So if you have a 7000lb loaded rig (trailer plus all contents), you could have a tw of 1050lbs (15% of 7000). And regardin tw, the “brochure” dry hitch/tongue weight does not include the propane tanks weight either. The tanks plus a battery add ~120lbs (2-20lb tanks and a battery), or ~160lbs (2-30lb tanks and a battery).

Having to low of a tw can cause sway!!! Even if using a wdh that has sway control. What can happen is the sway control could “mask” the light tw weight sway issue until its to late.

Where there is a “max tw rating” is in regards to your receiver hitch that is mounted to the tv. It could have both a max tw for weight carrying (no wdh) and a max tw with a wdh.

What Ford tv do you have?
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Old 11-15-2017, 06:07 AM   #3
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I would not push it to the max. 15-20% is the figure that most use. You will be working your truck and trailer to their max load carrying capacity, which can lead to other problems.
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Old 11-15-2017, 07:39 AM   #4
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Thanks for the feedback! I agree with you based on the research that I have been doing, but what you and others might find interesting is the jayco sticker on my camper actually states that it includes the propane weight in the "dry weight" they provided.
"The weight of the recreation vehicle trailer as completed at the factory with full propane cylinder(s) and full generator fuel if applicable is: 6165 lbs
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Old 11-15-2017, 08:34 AM   #5
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Steve, I suggest visiting a CAT Scale. At this point you’re estimating the weights and while you might be spot on you could be off by a considerable amount.
The CAT Scale is your friend.
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Old 11-15-2017, 08:39 AM   #6
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Quote:
Originally Posted by stevegreen View Post
Thanks for the feedback! I agree with you based on the research that I have been doing, but what you and others might find interesting is the jayco sticker on my camper actually states that it includes the propane weight in the "dry weight" they provided.
"The weight of the recreation vehicle trailer as completed at the factory with full propane cylinder(s) and full generator fuel if applicable is: 6165 lbs
Yes, you are correct in that the YELLOW sticker in your camper states the as delivered weight, including the propane tanks with propane (but not the battery).

But the “BROCHURE” weights do not include the propane tanks or a battery from what I have found in all my searches. That is why your rig weighs more as delivered than the weight listed in the “brochure“.
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Old 11-15-2017, 08:52 AM   #7
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Stevegreen,

Welcome to JOF

Question; Where did your originally stated "Max tongue weight 890 lbs" come from?

If you haven't purchased the TT yet I would take your TV under loaded conditions (full fuel, passengers, cargo, etc.) to a CAT scale and weight it.

(TV's specified GVWR) - (CAT scale weight) = Available Payload Capacity

APC is the maximum combined weights of; WDH weight, loaded tongue weight, and any other TV cargo weight not accounted for at the CAT.

Bob
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Old 11-15-2017, 10:03 AM   #8
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Quote:
Originally Posted by Rustic Eagle View Post
Question; Where did your originally stated "Max tongue weight 890 lbs" come from?
Ya know, I was wondering that same thing! 'Cause with a trailer GVWR of 7500 lb he's gonna be putting up to 1125 lb on the tongue/hitch (based on 15%).

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Old 11-15-2017, 10:18 AM   #9
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You need to have adequate tongue weight for handeling purposes. Yes if you offset weight in the rear of your RV you will lower tongue weight...BUT without adequate tongue weight the RV will not tow properly. You need about 12% to 14% tongue weight, no matter what. To light and your putting yourselft at risk.

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Old 11-15-2017, 10:34 AM   #10
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Quote:
Originally Posted by stevegreen View Post
Is this correct, by loading trailer in the back it will reduce the tongue weight?
Be very very careful here. In terms of safety considerations, in no case should your loading exceed the Jayco GVWR of the trailer!

I kinda think you may be approaching this quite the right way. First, your trailer and tow vehicle combined GVWRs must not exceed the tow vehicle's GCVW rating. Second, your trailer's GVWR is 7500 lb; travel trailers are *designed* to put 10-15% of that weight on the tongue to be carried by the tow vehicle. That tongue weight is applied to your tow vehicle as payload, so 15% is about 1,125 lb.

There are other considerations, but those are the biggies. But do NOT base your towing capacity questions on the tow vehicle manufacturer's theoretical towing capacity, as that figure does not allow for the tongue weight of our travel trailers.

Example: My 2010 F150 Supercab has a payload capacity of 1,670 (actually a little less due to accessories), but that has to include passengers, luggage and other cargo, the weight of my hitch, PLUS the tongue weight of my trailer. In my case, the trailer tongue weight should be about 900 lb max. While I have not put it on a CAT scale yet, I know I'm already pretty marginal. No way I could safely pull the trailer you're looking at, for example, and still haul any substantial cargo.

Roger
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