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06-14-2019, 10:38 PM
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#1
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Junior Member
Join Date: May 2018
Posts: 23
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Tongue Weight
We have a 2019 26RBWS.It has a tongue weight of 908lbs. We also added the second ac in the bedroom and we have the 4pt equlizer hitch.Both of these added weight to the actual weight thats put on the rear of the truck.How can I find out what the real tongue weight is with the added weight? This is not including whats in the front storage compartment.
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06-14-2019, 11:12 PM
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#2
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Senior Member
Join Date: Feb 2016
Posts: 538
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The only sure way to know is to weigh it. Either at the truck scales or using an actual tongue scale. There's also a method using a bathroom scale with a board and pivot block you can look up online. I think there's YouTube videos on that also. If your 908lb weight was in the factory specs, that's likely not accurate either.
Ray
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2017 Rockwood 2109S
Ram 1500
Me Her And a furry little dog
US Navy Veteran
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06-14-2019, 11:46 PM
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#3
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Senior Member
Join Date: Jul 2017
Location: California
Posts: 7,616
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Buy a Sherline scale.
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06-15-2019, 12:32 AM
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#4
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Just as confused as you
Join Date: Aug 2013
Location: south central Wisconsin
Posts: 5,108
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Tongue weight using bathroom scale or commercial scale.
https://www.etrailer.com/faq-how-to-...ue-weight.aspx
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Richard & Jill
2014 Flagstaff 832IKBS Classic Super Lite
2018 Silverado 1500 Crew Cab Z71 4WD All Star Edition
Camping since 1989, Seasonal since 2000.
Car Shredder Op/Tech, Scrap Metal Recycling - retired
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06-15-2019, 01:36 AM
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#5
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Site Team
Join Date: Jan 2007
Location: Goodyear, Arizona
Posts: 33,796
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Quote:
Originally Posted by babock
Buy a Sherline scale.
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This!
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Dan-Retired California Firefighter/EMT
Shawn-Musician/Entrepreneur/Wine Expert
and Zoe the Wonder Dog(R.I.P.)
2016 PrimeTime TracerAIR 255, pushing a 2014 Ford F150 SCREW XTR 4x4 3.5 Ecoboost w/Max Tow Package
4pt Equal-i-zer WDH and 1828lbs of payload capacity
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06-15-2019, 05:11 AM
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#6
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Senior Member
Join Date: Nov 2018
Location: Florida
Posts: 334
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I agree, but a Sherline tongue weight scale
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I wished I’d gone camping sooner in life.
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06-15-2019, 08:21 AM
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#7
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Senior Member
Join Date: Oct 2017
Location: Fredericksburg, Virginia
Posts: 144
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Here are my results using a Sherline scale and a visit to the CAT scale to determine tongue weight. At the RV storage lot, the Sherline scale says my trailer’s tongue weight is 760 lbs. At the CAT scale, with the trailer loaded for camping, my hitch weight is calculated to be 780 lbs. (Hitched drive axle weight 3,280 minus unhitched drive axle weight 2,500 lbs = 780.)
Either method (Sherline or CAT Scale) tells me my tongue weight is approximately 14.6% to 14.9% of gross trailer weight. (Based on this particular trip's gross trailer weight of 5,220 lbs.)
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2017 Cherokee Grey Wolf 25RL
2017 Nissan Titan 4x4
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06-15-2019, 09:35 AM
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#8
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Senior Member
Join Date: Dec 2018
Location: Eastvale. CA
Posts: 345
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Quote:
Originally Posted by Scrapper
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That's an easy way to do it at home without a Sherline but be sure to have a good guess of the rough tongue weight before trying it or one could easily blow the scale apart. For instance, a 1,000 pound tw at 2:1 will apply 500 pounds on the scale. Most bath scales max at around 300. For most tt's, 3:1 will be the minimum and 4:1 or even 5:1 may be required.
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06-15-2019, 10:09 AM
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#9
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Senior Member
Join Date: Feb 2018
Location: Monticello, IL
Posts: 1,696
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Quote:
Originally Posted by Go West
Here are my results using a Sherline scale and a visit to the CAT scale to determine tongue weight. At the RV storage lot, the Sherline scale says my trailer’s tongue weight is 760 lbs. At the CAT scale, with the trailer loaded for camping, my hitch weight is calculated to be 780 lbs. (Hitched drive axle weight 3,280 minus unhitched drive axle weight 2,500 lbs = 780.)
Either method (Sherline or CAT Scale) tells me my tongue weight is approximately 14.6% to 14.9% of gross trailer weight. (Based on this particular trip's gross trailer weight of 5,220 lbs.)
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Curious how you managed to have zero weight transfer to/from the front axle hitched vs unhitched. Was your hitched weight with the WDH bars in place? If so, that would explain the front axle weights not changing but also means the tongue weight calculated from the CAT scale is incorrect due to WDH weight transfer.
Tongue weight using CAT scales has to be calculated with hitched but no WD bars in place (put them in the bed of the truck) steer+drive axle weights minus unhitched steer+drive axle weights.
I've never seen zero weight transfer off the front axle when hitched without WD bars on which is why I'm questioning your method.
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2017 GMC Canyon - CCLB, 4x4, 2.8L Duramax, ARE Z-series shell
2013 Shamrock 21SS
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06-15-2019, 10:21 AM
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#10
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Senior Member
Join Date: Oct 2017
Location: Fredericksburg, Virginia
Posts: 144
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The truck and trailer were hitched with the weight distribution bars engaged; thus the transfer of weight back to the TV front axle when on the scales.
What you are saying, if I understand, is that if I had disengaged the weight distribution bars, the drive axle weight reading would have been higher. I can see that. However, it seems that the method I used gave me (in effect) my actual on-the-road hitch weight.
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2017 Cherokee Grey Wolf 25RL
2017 Nissan Titan 4x4
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06-15-2019, 10:38 AM
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#11
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Senior Member
Join Date: Feb 2018
Location: Monticello, IL
Posts: 1,696
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Quote:
Originally Posted by Go West
The truck and trailer were hitched with the weight distribution bars engaged; thus the transfer of weight back to the TV front axle when on the scales.
What you are saying, if I understand, is that if I had disengaged the weight distribution bars, the drive axle weight reading would have been higher. I can see that. However, it seems that the method I used gave me (in effect) my actual on-the-road hitch weight.
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The WDH also transfers weight back to the trailer axles. Yes, with WDH bars on you see what weights are on the TV's axles (WDH doesn't take any weight off the hitch, it just helps redistribute it) but you cannot calculate the actual tongue weight with the 2 weight results you have.
I'll use my most recent weights as an example.
Unhitched TV:
Steer: 3200
Drive: 2680
Hitched w/ WDH:
Steer: 3020
Drive: 3460
Theoretical hitch weight: 600LB
That is not my actual hitch weight, though. The WDH (Which I have since adjusted to transfer more weight to the front) masks it due to the weight transfer back to the trailer.
Why does this matter? Trailer loading and balance. If the tongue is too light or too heavy compared to total trailer weight then it won't tow as well. You need the true, loaded-for-the-road tongue weight in order to determine if the trailer is properly loaded.
You're bumping up against the 15% max guideline for hitch weight, that's not really a good place to be. That puts a lot more momentum and stress on your TV when going over bumps and tends to cause excessive porpoising/heaving. Our trailer was similar during our first long trip, redistributing the load in the trailer to reduce tongue weight % down closer to 12% made a big difference.
Just my $0.02.
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2017 GMC Canyon - CCLB, 4x4, 2.8L Duramax, ARE Z-series shell
2013 Shamrock 21SS
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06-15-2019, 11:05 AM
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#12
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Senior Member
Join Date: Oct 2017
Location: Fredericksburg, Virginia
Posts: 144
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Quote:
Originally Posted by DieselDrax
You're bumping up against the 15% max guideline for hitch weight, that's not really a good place to be. That puts a lot more momentum and stress on your TV when going over bumps and tends to cause excessive porpoising/heaving. Our trailer was similar during our first long trip, redistributing the load in the trailer to reduce tongue weight % down closer to 12% made a big difference.
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Yes, my readings (including the Sherline scale weight) show that my trailer is at the high end of acceptable range for tongue weight. Since this trip I've removed my tool box and other items from the front storage compartment and placed them in other locations (e.g., underneath the dinette) over or behind the trailer axle.
I'll try the method you describe next visit to the CAT scale to see the difference (WDH in bed of the truck, then hitched steer+drive axle weights minus TV unhitched steer+drive axle weights). Thanks for your post. Always learning something on this forum.
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2017 Cherokee Grey Wolf 25RL
2017 Nissan Titan 4x4
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