antisway question - Page 2 - Fiberglass RV


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Old 12-16-2013, 09:22 PM   #15
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Name: Bruce
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Lengthen out the trailer tongue five feet and it will stop swaying.
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Old 12-16-2013, 10:54 PM   #16
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Quote:
Originally Posted by Hambone View Post
towing my Scamp with the Silverado had a draw bar that made it level, had a wiggle....went with a 2 in drop with a 1 in rise ball, no wiggle... amazed how much 1 inch made (approximately a inch)
You have hit the truth squarely. A 16 needs to be at or slightly below level and have adequate tongue weight. Done right, it tows nearly as well as a Scamp 13 which is the best towing trailer ever.
A friction sway device is no more a bandaid than a panhard bar is on a racecar. It improves the best set-up and it is cheap.
While I have never had a Scamp which required a friction bar I use one and love it for comfort and handling.
I have though, had a couple of SOBs which required a friction sway to bring them above marginal safety standards.
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Old 12-17-2013, 12:39 AM   #17
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Trailer: Scamp 16' side dinette, Airstream Safari 19'
California
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People often overlook adding more air to tug tires when towing. The added trailer tongue weight and added side forces will be better handled by running the tires at higher pressures.
Also I found some improvement in my Jeep Wranglers ability to resist sway by shortening the drawbar which moved the ball about 3" closer to the rear bumper and shortened the moment arm. It better handled sway and helped with vertical loads. I originally had the long drawbar to clear the rear mounted spare tire. Now I moved the spare upward about 4" allowing the hitch to go under the tire. I switched my poor performing coupler to a Bulldog clam shell type which provides a lower profile and better clearance to the spare.
Trailer balance and level attitude are the biggies, but don't overlook the small stuff.
I can tow my trailer without a friction sway device and have no scary self perpetuating sway events, but the rig feels better with one connected. It quiets mini wags, and isn't expensive to purchase or difficult to hook up. The one thing I don't care for is the hitch pins they use to keep the thing hooked to the balls. They deform with use and can fall off. I envision the front one falling off and the device hitting the road and causing havoc. I have been using tie wraps to safety wire them in place. There's gotta be a better way...
Russ
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Old 12-17-2013, 08:53 AM   #18
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Might also consider adding air bags to stiffen the rear suspension. They did wonders for towing with my truck and van. I also run E rated tires on both of them. My Astro van rides a little rough with the E tires but they don't allow much side to side movement either.
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Old 12-17-2013, 09:42 AM   #19
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We are among the lightest towers on the site, our tongue weight is between 7 to 8% of trailer weight.

As Russ suggests, we run our tow vehicle with higher than normal rear tire pressures boosting from a normal 26 to 39 lbs at the rear and to 34#s at the front. As well we have shortened our draw bar, bringing the ball closer to the rear axle, easy to do by drilling another locating hole in the draw bar.

We towed a few thousand miles without a sway bar with no issues. However we've added an anti-sway bar as inexpensive insurance.

The anti-sway bar is very easy to install and easy to use. Unlike some we never find we have to loosen it when backing up. (Definitely it should not be over tightened.)
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Old 12-17-2013, 11:17 AM   #20
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Originally Posted by ruscal View Post
The one thing I don't care for is the hitch pins they use to keep the thing hooked to the balls. They deform with use and can fall off. I envision the front one falling off and the device hitting the road and causing havoc.
Russ
Russ I am assuming the pins you are bending are on your anti sway device and not your hitch bar? as I have never had a hitch pin bend.... wonder if perhaps you need to find stronger or larger pins...
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Old 12-17-2013, 01:16 PM   #21
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I went overboard and bought the Hensley hitch., Actually the Pro Pride which is the same designer. Never feel sway either being passed or in crosswind. Have to say I am happy with the performance although it is very pricy. Also has the added advantage of being an antitheft as the receiver is specific to the hitch. This is not an advantage when in the shop as they cannot move it with their usual setup.
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Old 12-17-2013, 06:47 PM   #22
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Cool Trillium 1300 & 2000 Outback

We have towed thousands of miles, from Washington to Arizona four times, and never had a problem with sway or wiggle. We keep our TV tires at 36 and the trailer tires at 50 psi. We do put a lot of miles through Oregon and California both of which have a towing speed of 55.
We recently purchased a 2014 Outback and we will see what that combo does.

Here is a study done across the pond:

Bailey of Bristol - Caravan Stability Studies
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Old 12-18-2013, 12:20 AM   #23
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Quote:
Originally Posted by Carol H View Post
Russ I am assuming the pins you are bending are on your anti sway device and not your hitch bar? as I have never had a hitch pin bend.... wonder if perhaps you need to find stronger or larger pins...
Carol,
Yes the hitch pins tend to open up after several miles towing. I have not analyzed what causes it. I just replaced the originals with new ones. They are as heavy as will fit through the holes. I will fashion some large safety pins to try if I can't find any to buy. I like the idea of a clasp to prevent the pin from escaping.
Russ
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Old 12-18-2013, 11:13 AM   #24
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Quote:
Originally Posted by Roger C H View Post
We have towed thousands of miles, and never had a problem with sway or wiggle. We keep our TV tires at 36 and the trailer tires at 50 psi.
Roger, we are in a similar boat. Car tires at 36lbs and trailer tires 38lbs. The 750lb rated Reese WDH is a big factor in our no sway, no wiggle, no drama ride.

Quote:
Originally Posted by giro53 View Post
I went overboard and bought the Hensley hitch., Actually the Pro Pride which is the same designer.
My hat goes of to you for taking such a positive step with regards to towing and safety.
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Old 12-18-2013, 11:34 AM   #25
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Quote:
Originally Posted by ruscal View Post
Carol,
Yes the hitch pins tend to open up after several miles towing. I have not analyzed what causes it. I just replaced the originals with new ones. They are as heavy as will fit through the holes. I will fashion some large safety pins to try if I can't find any to buy. I like the idea of a clasp to prevent the pin from escaping.
Russ
Russ, I am wondering if perhaps there is an issue with the set up and perhaps to mush stress is being put on it? Are you doing sharp turns or backing up with it attached perhaps?
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Old 12-18-2013, 12:52 PM   #26
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Russ,

We also had a pin that lost it's spring. We bought a new one at Tractor Supply that was thicker and have not had a problem in a couple of years. We do leave the anti-sway bar on and 'normally' tightened when backing. We do not over-tighten, it should slide.
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Old 12-19-2013, 03:48 AM   #27
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Smile Forgotten fact

I forgot to mention that we have no sway nor weight distribution control mechanism of any type.
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Old 12-19-2013, 11:27 AM   #28
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Quote:
Originally Posted by Carol H View Post
Russ, I am wondering if perhaps there is an issue with the set up and perhaps to mush stress is being put on it? Are you doing sharp turns or backing up with it attached perhaps?
Guilty as charged to both counts. I never could figure out why you couldn't back up with it tensioned. Maybe that is what opens the clips? It seems the sway device wouldn't know which way the rig was going, since in normal operation it resists both compression and extension. I can see how the tires on the trailer would try to skid sideways with the device tensioned when backing up on ice or in low traction situations though.
Russ
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