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Old 09-11-2011, 07:09 PM   #1
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Sway! With A Dual cam!!

Need some help with this!!

Let it be known first that I have always had sway with this hitch.

Just got back from a little trip. (5 hrs round trip) prior to this trip i had been reading up on how my type of hitch was to be set up(I set it up not a dealer) even watched a vid on you tube. after that I decided that when I set it up originally, I didnt do a few things the way they should have been done. So labor day I took the time to go through and set things the way they should be. everything to my knowledge is set perfect now-TT level , spring bars seated in cams , 6 links between bars & snap up brackets , hitch head set at proper angle relative to spring bar angle/drop , measured wheel wells on pick up, front is up 1/2" and so on.....But I am still getting MAJOR SWAY! when I get the worst sway is when I crest a hill and start to decel-Bad enough today at 70mph twice I had to use hand control on brake controller! After the second time I just flat slowed down to 60mph. Which didnt eliminate it but felt safer.

one of the first things im going to have to do is get on a cat scale but until then im lookin for something I mat be overlooking.


Thanks in advance!
Brian.
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Old 09-11-2011, 07:18 PM   #2
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I would think no hitch in the world (properly setup or otherwise - well maybe except the Hensley) would cure an imbalanced trailer with too much weight behind the axles. Sounds as if the tongue weight might be way too light?
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Old 09-11-2011, 07:45 PM   #3
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What was your measurements before the trailer is hitched?

You said your front is up a 1/2 inch....I think it should be down a half inch or at least back to the same unhitched measurement. That way the tongue weight is distributed evenly between both front and rear axles. I'm thinking that with your current set up you have too much weight off your front axle and that may be contributing to the sway.

Just my 2 cents!
-Keith
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Old 09-11-2011, 08:09 PM   #4
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Quote:
Originally Posted by EXTremist View Post
I would think no hitch in the world (properly setup or otherwise - well maybe except the Hensley) would cure an imbalanced trailer with too much weight behind the axles. Sounds as if the tongue weight might be way too light?
HMMM-could be on to something there-250lb gen. hanging off the rear of the trailer with the rest of the trailer being pretty much empty with the exception of clothing for 4, no grocery or or water of any kind.
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Old 09-11-2011, 08:12 PM   #5
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Quote:
Originally Posted by NH 2500HD View Post
What was your measurements before the trailer is hitched?

You said your front is up a 1/2 inch....I think it should be down a half inch or at least back to the same unhitched measurement. That way the tongue weight is distributed evenly between both front and rear axles. I'm thinking that with your current set up you have too much weight off your front axle and that may be contributing to the sway.

Just my 2 cents!
-Keith
I think if I have read others posts correctly if my front was lower than unhitched it would be over my front axle weight rating?? not 100percent sure on this??
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Old 09-11-2011, 08:15 PM   #6
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Quote:
Originally Posted by jeeperx2 View Post
HMMM-could be on to something there-250lb gen. hanging off the rear of the trailer with the rest of the trailer being pretty much empty with the exception of clothing for 4, no grocery or or water of any kind.
A tongue light trailer will be more prone to sway. That genny on the back could be enough to throw things off. Also your trailer should sit level or slightly nose down when hitched.
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Old 09-11-2011, 08:40 PM   #7
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GMC specifies that 100% of the rise should be eliminated...

Reese 2009 specs say the final front end height must be less than or equal to the unhitched height...

This info was taken from the following:

http://http://www.rv.net/forum/index...d/17730894.cfm
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Old 09-11-2011, 09:00 PM   #8
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Quote:
Originally Posted by NH 2500HD View Post
GMC specifies that 100% of the rise should be eliminated...

Reese 2009 specs say the final front end height must be less than or equal to the unhitched height...

This info was taken from the following:

http://http://www.rv.net/forum/index...d/17730894.cfm
link didnt work.
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Old 09-11-2011, 09:10 PM   #9
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Quote:
Originally Posted by NH 2500HD View Post
snip.......I think it should be down a half inch or at least back to the same unhitched measurement.........snip.........I'm thinking that with your current set up you have too much weight off your front axle and that may be contributing to the sway........snip
Keith,

Your correct on returning the front suspension back to it's unhitched height, but on Brian's '07' GMC 2500HD compressing the GMC 2500HD front suspension below it's unhitched height will force the suspension against the suspension stops thus effecting TV handling and ride (been there, done it).

I also agree that not returning the "same weight" back to the TV's front suspension that was removed when the TT coupler was placed on the hitch ball can contribute to handling issues (possibly a sway event).

Bob
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Old 09-11-2011, 09:21 PM   #10
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Originally Posted by jeeperx2 View Post
I think if I have read others posts correctly if my front was lower than unhitched it would be over my front axle weight rating??.....snip
Brian,

I doubt you would be over the TV's FGAWR, but one could return more weight then what was initially removed going below the unhitched height, and also bottom out the suspension stops that I mentioned in my prior reply.

IMO when the Reese HP Dual Cam is set-up and adjusted correctly it will perform well. For effective TV/TT handling of a TT the weight and length of your Jayco you would want a loaded tongue weight equal to 13% to 15% of your loaded TT weight. The only way to confirm your weights and the adjustment of the Reese HP Dual Cam WDH is a visit to a CAT scale. This STICKY will walk you thru the process: https://www.jaycoowners.com/showthread.php?t=3871

The lower portion of the following link has some great info on adjusting a Reese HP Dual Cam: http://www.rv.net/forum/index.cfm/fu...d/17730894.cfm

If you want an extra pair of eyes on your Reese HP Dual Cam WDH set-up, feel free to post some pics (in this thread) of your loaded TV/TT hitched up and we can look to see if there is anything that stands out. Close-up pics of the WDH would be very helpful.

Bob
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