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Thread: Shaking up and down
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08-21-2019, 07:54 PM #1
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Shaking up and down
We have a new imagine 2600rb. When traveling on major highways we get a lot of the tow vehicle and trailer bumping up and down. It feels like we are driving on a washboard. I was wondering what caused this. Do I need to distribute weight differently? We tow with a Jeep Grand Cherokee with a Hemi V8. I am hoping to get some suggestions.
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08-21-2019, 08:05 PM #2
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Geoff and Cheri
2011 F250 CC 6.7L
Firestone Ride Rite Airbags
Pull Rite 16k SuperGlide
2018 Reflection 303RLS, Build date 9/2017
USMC-Retired
Thin Blue Line - Retired
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08-21-2019, 08:09 PM #3
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Yes more information will be helpful. A shorter wheelbase/lighter capacity tow vehicle will tend to get knocked around quite a bit by 30’ travel trailer. We are not full time but travel quite a bit and the roads are terrible in some places.
The Adams - 2017 Reflection 367BHS, 2019 F-350 6.7L PSD 4x4 CC DRW, B&W hitch on Ford pucks, Air Lift Loadlifter 5000 Ultimate Plus air bags, "Rupert" the Weimaraner.
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08-21-2019, 08:23 PM #4
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The Jeep is a 2015 and a 4x4. I have a weight distribution hitch. We some similar shaking with the old trailer but is was 26' and weighed about 5200 lbs.
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08-26-2019, 07:52 AM #5
Run your vehicle across a CAT scale at a nearby truck stop to get your weights. Go into the office/cashier and let them know you want to get loaded and unloaded weights - it will cost around $12. Then, run across the scale with the trailer hooked up as though you were heading out for a camping trip.
Next, find a suitable place in the parking lot to drop the trailer and run just your Jeep onto the scale to get the figures for the front and rear axle weight.
Go back into the office and they will give you two scale tickets. The first scale ticket will show you the weight of the front axle, the drive (or rear) axle, the trailer axles(s) and the total weight of your rig. The second ticket will show just your Jeep's unloaded weight.
The goal of the weight distribution hitch is to put nearly the same weight on the front axle when loaded as when unloaded, or another way to put it, to take weight off the rear axle and distribute it to the front axle of the Jeep and the axles of the trailer. If there isn't enough weight on the front axle and/or the tongue weight is too light you may not have sufficiently strong bars to prevent porpoising as you're experiencing now.
Go across the scales, post up your scale tickets and the folks here will give you guidance.
Bob2019 Imagine 2400BH
Progressive Industries Hardwired EMS, RV Airflow, MicroAir EasyStart, MaxxAir Fan
2021 Ram 1500 Bighorn EcoDiesel CC short bed
Anderson Weight Distribution Hitch
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