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02-19-2019, 02:07 PM
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#1
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Senior Member
Join Date: Jan 2014
Posts: 241
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251RKS sway
My 2107 251RKS sway problem: I have a2018 F150 3.5L turbos, max tow pkg, 20 inch wheels, tow rating 12,000 lbs, Fastway 10,000, sway control/ weight distribution hitch, Forest River Surveyor 251RKS (6000lbs dry) water tanks empty, got a lot of sway today. Truck pulls great, sway is a problem.... someone said fill fresh water tanks to offset rear kitchen to put an extra weight on ball??? Have any 251RKS owners had this sway issue?? Need to find a fix for the sway. Comments?
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02-19-2019, 02:17 PM
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#2
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Senior Member
Join Date: Mar 2014
Location: NY Capital District
Posts: 429
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Add some water to the fresh water tank. It will help balance the load from the heavy kitchen area.
__________________
2017 Forest River Surveyor 251rks
2022 Chevy 3500HD High Country
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02-19-2019, 03:10 PM
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#3
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Senior Member
Join Date: Oct 2016
Location: Snohomish, WA
Posts: 1,151
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Quote:
Originally Posted by swj
My 2107 251RKS sway problem: I have a2018 F150 3.5L turbos, max tow pkg, 20 inch wheels, tow rating 12,000 lbs, Fastway 10,000, sway control/ weight distribution hitch, Forest River Surveyor 251RKS (6000lbs dry) water tanks empty, got a lot of sway today......
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So, we have all these specs, yet we don't know crucial facts yet:
What's the payload of your truck? (yellow sticker in driver door jamb)
Is the trailer loaded with anything?
Propane tanks full and battery(ies) on the tongue?
WHO SET THE WDH UP?
Was a truck scale used?
Quote:
Originally Posted by swj
......Truck pulls great, sway is a problem.... someone said fill fresh water tanks to offset rear kitchen to put an extra weight on ball???.....
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Whoever that "someone" is, doesn't understand how trailers are balanced from the factory or how a WDH works. That "someone" is giving you false information to MASK the problem as opposed to remedy it.
A trailer generally has a tongue weight between 10-15%. Just because it has a kitchen in the rear does not mean it's rear heavy. Placement of the axles and other things in the trailer will naturally make the trailer's tongue weight come in at 10-15%.
If the hitch is set correctly, the sway will go away whether you have 0 or 46 gallons of fresh water on board.
Quote:
Originally Posted by swj
...... Have any 251RKS owners had this sway issue?? Need to find a fix for the sway. Comments?
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It's not a model specific issue. My guess is that it's a heavy trailer and the WDH is set up too light. To properly adjust it, you really need to look at the WDH owners manual and then verify your adjustments by passing over a truck scale.
Set up properly, the WDH will help keep the truck planted to the ground and the trailer tracking straight behind the truck.
In closing, my trailer is nearly identical in length and weight to yours. We towed 4k+ miles over 2 years and only once had a "sway" issue (the 30mph side winds were affecting every car on the road that day). I did, initially set up the WDH using a scale and knew that my truck's axles (especially the front) had enough weight on them. The ending reality was that with our 3rd kiddo on the way, the truck was maxed out and a 3/4 ton was more appropriate for that size trailer.
__________________
2017 Forest River Surveyor 247BHDS...
...Tugged by a 2016 F250 XLT FX4 SuperCrew, Shortbed 6.2L, 4wd, 3.73...
...Joined with a Husky Centerline TS 800-1200lbs WDH
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02-19-2019, 06:05 PM
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#4
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Senior Member
Join Date: Jan 2014
Posts: 241
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sway
payload 1732lbs, 2 20lbs propane tanks and battery,
does this help?
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02-19-2019, 07:03 PM
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#5
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Senior Member
Join Date: Jun 2016
Posts: 5,059
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I have what seems to be a very similar truck which is pure stock. My trailer actual weight is ~ 7,000lbs. FW tank is ahead of the back bumper, full, partial, empty makes zero difference on my trailer.
I use a Propride hitch. From day 1, I haven't had a sway issue.
I suspect that you'd have a hard time finding anyone with a Propride or Hensley hitch asking for help with sway issues.
YMMV.
__________________
Al
I am starting to think, that I will never be old enough--------to know better.
Tolerance will reach such a level that intelligent people will be banned from thinking so as not to offend the imbeciles. Fyodor Mikhailovich Dostoevsky, Russian Novelist
S.E. Mich. Flagstaff 26FKWS / 2022 F-150 3.5 EcoBoost SCrew Propride
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02-19-2019, 07:32 PM
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#6
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Senior Member
Join Date: Aug 2015
Posts: 125
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IMO you WD hitch is taking to much weight off the ball. My 251RKS towed great behind the wife's 1500 but I could never get it the WD to work on my 2500 (it towed better without).
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02-19-2019, 11:07 PM
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#7
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Site Team
Join Date: Jan 2007
Location: Goodyear, Arizona
Posts: 33,802
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You should have gotten the E2's big brother, the 4 point Equal-i-zer WDH.
__________________
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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03-23-2019, 10:55 PM
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#8
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Senior Member
Join Date: Aug 2016
Location: Bow WA
Posts: 770
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I have a 251rks and have not yet found that I need to install my WDH. I tow with a Ram 2500, - 8 foot bed. I have never experienced any sway.
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Ram2500 diesel, 4x4. / FR251rks
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03-23-2019, 11:04 PM
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#9
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Senior Member
Join Date: Aug 2016
Location: Bow WA
Posts: 770
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attached is a year 2016 picture of the then new Surveyor 251rks, and my Ram 2500.
...............
Ram2500 / FR Surveyor 251rks
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03-25-2019, 05:11 PM
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#10
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Senior Member
Join Date: Jan 2018
Location: Astatula, FL
Posts: 193
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I'm in the "WDH isn't set up properly" camp. My trailer is lighter but, my truck is not a max tow. I have an E4. The only sway issue I've had, like clarkbre, was with a significant cross wind.
__________________
Mark Wilson
No trees were harmed while sending this message;
however, a rather large number of electrons were terribly inconvenienced.
TT: 2018 Surveyor 243RBS TV:2019 F-250 XLT 6.2L 4x4 Crew Cab
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03-25-2019, 07:26 PM
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#11
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Senior Member
Join Date: Jun 2014
Location: Tega Cay, SC
Posts: 534
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We are picking up our new 251RKS next week. I opted for the 4 point Equal-i-zer WDH, and will hit the CAT scales if the dealer doesn’t get it dialed in correctly.
__________________
I live with fear every day, and sometimes she lets me go fishing.
2019 Surveyor 251RKS
2008 Ford Expedition EL
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03-25-2019, 07:39 PM
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#12
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Senior Member
Join Date: Jan 2014
Posts: 241
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sway
the RV Dealer is assigning another tech to redo(3 attempt)
the Fastway 2 hitch, fingers crossed. Whats perplexing is
Fastway hitch is the only hitch the RV Dealer sells... will update
later this week
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03-25-2019, 08:49 PM
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#13
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Senior Member
Join Date: Oct 2016
Location: Snohomish, WA
Posts: 1,151
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Quote:
Originally Posted by swj
the RV Dealer is assigning another tech to redo(3 attempt)
the Fastway 2 hitch, fingers crossed. Whats perplexing is
Fastway hitch is the only hitch the RV Dealer sells... will update
later this week
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It really shouldn't be that hard with a tape measure and a person that knows how to read it.
1. Measure the TV's front wheel arch height without anything hooked up.
2. Attach the trailer without WD bars connected and remeasure the front height of the TV's front wheel arch.
3. Attach the WD bars and the height TV's front wheel arch height should be 1/2 way between measurement 1 and 2 or closer to 1.
Find out why the dealer can't get it right and insist on the dealer measure the weights on the CAT scale.
__________________
2017 Forest River Surveyor 247BHDS...
...Tugged by a 2016 F250 XLT FX4 SuperCrew, Shortbed 6.2L, 4wd, 3.73...
...Joined with a Husky Centerline TS 800-1200lbs WDH
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03-27-2019, 01:31 PM
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#14
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Senior Member
Join Date: Jan 2014
Posts: 241
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sway no more
Dealer set up the Fastway 2 hitch and it works! No sway and no bounce from rear end of truck. You have to follow the owners manual, fill out page 15 and page 20, we did it and it works. I called Fastway customer service and they help us dial in hitch. Adding 2 additional washers leveled the trailer, and back to original front fender measurement, plus 1/4 of an inch and went from minimum weight distribution to maximum weight distribution the hitch provides. Night and day difference when hitch is dialed in!! Thanks to all.
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03-27-2019, 11:32 PM
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#15
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Senior Member
Join Date: Oct 2016
Location: Snohomish, WA
Posts: 1,151
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Glad you got it figured out. Safe towing is happy towing!
__________________
2017 Forest River Surveyor 247BHDS...
...Tugged by a 2016 F250 XLT FX4 SuperCrew, Shortbed 6.2L, 4wd, 3.73...
...Joined with a Husky Centerline TS 800-1200lbs WDH
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