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Thread: Bumpy ride/mild rocking with TT
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01-11-2021, 10:05 AM #11
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I was just going by your statement that anytime you exceed the tv weight you are going to have a battle for control
So he is exceeding his TV weight by possibly 3500lbs but many trucks like yours are towing trailers that weigh in excess of 6000-10000 pounds over the weight of truck
2021 Imagine 2400 BH
2018 GMC Sierra 4x4 crew 1840 payload2021 Imagine 2400 BH
2018 GMC Sierra 4x4 Crew 1840lb payload
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01-11-2021, 01:42 PM #12
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6000+ lbs over the weight of my truck would be 14,000 lbs. Thats 5th wheel weight. 5th wheels handle much better as far as sway but still can jerk around the truck. Thats why so many who tow 5th wheels complain of chucking but rarely ever complain about sway.
I was mainly talking about travel trailers.
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01-11-2021, 03:22 PM #13
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01-11-2021, 04:51 PM #14
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A change in weight distribution can help, as can air bags, or equivalent. But nothing will eliminate it, always. A stretch of road near my house used to induce proposing very badly in my 4Runner towing my 3,000 lb boat. Nothing now that I use my F-150....but now there is another section of highway that does it, that never did with the old tow vehicle. With the Imagine, increasing the weight on the steer wheels helped a lot, but there were still a few times where we bounced over the waves on the Interstate in Indiana.....so play with the "tuning" of your hitch, first....
2017 Imagine 2670MK
2012 F-150 SCrew, Eco, 4x4 6.5 box
Max. Tow, HD Payload, Airbags, ProPride hitch
(Previous: Jayco 26.5RLS Fifth, Revolution Pinbox)
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01-16-2021, 03:20 PM #15
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I’m seeing a couple things here.
First, that’s not the long Expedition, it’s the short one, so like a 124” WB. That’s very short for towing a 30ft or longer camper. You can google search lots of camper crashes with the shorter Expedition and Tahoe’s. There’s a real nasty trailer sway one on YouTube with a 2006ish expedition.
Your ride is probably bad because there’s too much weight on the tow vehicle, you are most likely exceeding your payload. I can tell you have a loaded version by the wheels, that’s makes it an even lower payload. If you bolt 900lbs to the hitch, add a family of four and a dog and a cooler you end up hundreds of pounds overweight.
Do the right thing, go to a scale, weigh it and read your yellow door jam sticker. You can post them here and we can help if you like. Once you’ve weighed it verified you aren’t over the payload and axle numbers, you can look at the rear suspension. If you are with in a 1/2”-1” of the bump stops you will get that rough ride you are experiencing. I think the expedition uses a shock through the middle of the spring so you can’t use airbags. I believe they do make a sumo spring.
I can’t say it enough though, know your weights, make sure you keep 12-13% of the weight on the tongue, keep your speed in check. It’s a long trailer for a short WB. Just adding sumo springs to fix the ride doesn’t make it safe.
2018 F-250 6.7L Leveled, 35’s.
2019 Imagine 2500RL, 640w Solar, Lion UT1300s, 3000w Inverter
CRE3000, Sumosprings
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01-16-2021, 07:04 PM #16
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01-16-2021, 07:26 PM #17
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01-16-2021, 08:00 PM #18
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01-17-2021, 07:31 AM #19
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Goducks is correct. We are talking about a trailer trailer in a travel trailer thread. Towing a trailer trailer that weighs several thousand pounds more than the tow vehicle will create an unstable setup. WDH are a nice tool but they don’t correct the imbalance or fully fix that there’s a 900-1000 load applied to the very end of the TV. Please stay on topic.
2018 F-250 6.7L Leveled, 35’s.
2019 Imagine 2500RL, 640w Solar, Lion UT1300s, 3000w Inverter
CRE3000, Sumosprings
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01-17-2021, 07:32 AM #20
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Check if your tow vehicles' electronic sway control is on. We have an Andersen hitch but the install manual says to turn this off on your tow vehicle because it fights with the WD hitch. (forward and backward fight, not side to side) We had a similar issue with our F-350 until we turned off the sway control.
Last edited by Joyous; 01-18-2021 at 07:13 AM.
Re-pack bearings necessary?
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