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Old 05-31-2015, 06:44 PM   #11
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First off, I think something is amiss in your calculations. The total weight of TT + TV should be the same whether the WDH is connected or not. It is the distribution of weight between the axles that changes when you apply the WD.

Oddly, my TT is nearly 2k lbs heavier than yours yet the tongue weight is much less. In your 3rd photo the spring bars appear to be bending. Are they or is that just an illusion?

Once you have an accurate tongue weight, if there is still a problem I'd try adding 1 more washer to the hitch head. If that doesn't help I'd raise the spring bar support arms 1 hole and take out 3 or 4 washers and try again.

Redistributing weight within the TT may be the key. Good luck!
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Old 05-31-2015, 06:48 PM   #12
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When I made my scale I sustituted 2X2's for the pieces of pipe and it worked just fine. Using 2X2's stabilized the cross piece allowing me to stand on the set up, weigh myself and verify the accuracy.
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Old 05-31-2015, 07:01 PM   #13
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Quote:
Originally Posted by Rustic Eagle View Post
Nathan48035, ...snip...
I would however adjust your WDH so the HTT tows level or a little nose "down" (best for TV handling)......., having it a little nose "up" can be amplified (not good) under less then ideal road conditions (bouncing, etc.).

I agree that you need to adjust your WDH to transfer a little more weight to your TV's front suspension, another 220lbs (3,080lbs - 2,860lbs).
...snip
Bob
In addition to what Bob said, above, recheck your tire inflation on both your TT and TV. They should be inflated to be at or near the maximum listed on the side of the tire. This reduces flex in the sidewalls and helps to reduce sway.
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Old 05-31-2015, 07:42 PM   #14
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First thanks for the all advice.

I guess I'll go ahead and cancel the Amazon order for 4 bathroom scales. The way you guys were making it sound like it wasn't a big deal to do I figured there must be some trick that I was missing.

Russ661, as Rustic Eagle already pointed out my tongue weight calculation was wrong so I'm definitely not money down on any of the other measurements at this point. With that said, I'm not sure I'm following the problem with my total weight. The totals that I have listed for the first trip to the scales (10,380 & 10,360) are only 20 lbs off. I'm assuming that is just due to inaccuracies in the scale though as those are directly from weight print out and not calculations. The second trip to the scale had a difference of 200 lb between the 2 times across the scale, but I also figured that may be realistic in terms of scale accuracy. The scale for the second trip was also not capable of weighing my truck alone (said it wasn't registering on the scale) so it doesn't surprise me that the difference was wider on that scale.

I kind of thought the bar looked like it was bending in the picture too, but I'm guessing that was just an illusion. It also kind of looks like the riser bar is bending a lot more than I think it was. I should have also mentioned the close ups of the hitch were from today after unpacked everything. The one showing the full camper and Durango were from just before we pulled off on Friday with everything loaded down.

Is it possible that by having my ball too high I am actually taking weight off of the axle and adding to the tongue weight? That seems completely counter intuitive, but if you think of it in an exaggerated sense I could totally see it happening. Maybe that wouldn't be the case with a single axle trailer, but I wonder if with a short dual axle that could be possible. I'm visioning lifting the weight being lifted off of the front trailer axle and redistributed on the back trailer axle and TV rear axle. Am I shooting at ghosts here or do you think that could be possible?

I will most definitely be making a scale rig to weight the tongue weight and then I'll actually be able to test that theory by weighing with the camper at different angles.

Last weekend I actually topped off all of my trailer tires prior to heading out as they were all a little low. I guess I should double check that they didn't lose air since then though. Also, I'll have to double check the Durango's tires.
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Old 05-31-2015, 08:17 PM   #15
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Originally Posted by Nathan48035 View Post
snip...... The totals that I have listed for the first trip to the scales (10,380 & 10,360) are only 20 lbs off. I'm assuming that is just due to inaccuracies in the scale though as those are directly from weight print out and not calculations. The second trip to the scale had a difference of 200 lb between the 2 times across the scale, but I also figured that may be realistic in terms of scale accuracy........snip
If you were using a CAT scale, they are suppose to have a certified 40lb plus/minus tolerance maximum.

Referencing your 2nd trip to the scales, the reason for the 200lb delta in your TV/HTT combined gross weights may be in your TV's rear axle weights. Your document states:

Truck & Camper: Rear Axle Weight 4,140lbs

Truck & Camper with WD: Rear Axle Weight 4,200lbs


Please note; with the WDH engaged your rear axle weight should be less, not greater, then the WDH not-engaged weight. Something isn't right with these weights.

I would check your CAT weight certs again to confirm the numbers match your document...., if they do match then I'm as well.

Bob
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Old 05-31-2015, 08:56 PM   #16
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Nathan, I agree with Rustic's calcs. I'm also curious about your Rear GAWR.
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Old 06-01-2015, 05:38 PM   #17
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Yea, I see what you guys are saying now, and I agree that 2nd trip doesn't make sense. I double checked the weight tickets and I typed them in correctly on my spreadsheet and it was a CAT scale. I won't go back to that station...

That is good news in terms of my tongue weight as the first trip tongue weight seems reasonable to fix being that I had the camper front loaded with packing and it was only ~170lb away from 15%.

I think my plan will be to adjust the tongue weight in my driveway using the bathroom scale as recommended and then take it back to the CAT scale on my next camping trip. I'll also get a new shank ordered for my hitch to get it level or nose down. Anyone know of a good place to get an Equalizer shank at a good deal?

RedHorse, my rear axle rating for the Durango is 3,900 lbs. I should be alright with that. I think it's just the tongue weight where I am in trouble right now.
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Old 06-01-2015, 06:08 PM   #18
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I just found a site with the shank that I think I need for 100 bucks and free shipping. Not too bad being that the list is $135.
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Old 06-01-2015, 06:13 PM   #19
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Forgot to include the site for anyone else that may be interested.
Adjustable Shank - 4" Drop/8" Rise - 12" Long - By Equal-i-zer | HitchSource.com
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Old 06-01-2015, 08:41 PM   #20
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Quote:
Originally Posted by Nathan48035 View Post
snip...... I think my plan will be to adjust the tongue weight in my driveway using the bathroom scale as recommended and then take it back to the CAT scale on my next camping trip.....snip
When you check your tongue weight at home, make sure the HTT fold-out ends are closed, makes a difference.

I check my tongue weight once in awhile at home as well (w/Sherline LM2000), and for grins I checked it with my slide opened....., the reading was off by 300lbs (below actual)!!

Sherline: Sherline Trailer Tongue Weight Scales

Bob
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