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Old 05-16-2008, 05:52 PM   #1 (permalink)
firepoggy
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Chucking is gettin annoying

Long Story....

Bought an 04 2500HD with the 6.0 to tow 5er in sig. All the numbers I researched should have matched the truck.

Truck was rated to tow 10,000lbs. Trailer maxed at 10,100 (no where close to that though)

Pin weight is 1300lbs, should not be a problem, dropped truck about an inch when I raised the jacks.

When I towed the trailer the rpms were through the roof and the combo would rock back and forth somthin terrible.

Wife got ticked and said we need a bigger truck (YES MAMM). Purchased truck in sig. Same trailer....Same problem minus the rpms.

Any suggestions other than a $2500 air hitch?

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Old 05-16-2008, 07:59 PM   #2 (permalink)
Drumaniac3000
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More weight on the pin will help with the up and down motion. Air bags on the truck or upgraded shocks may also work.

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Old 05-16-2008, 11:46 PM   #3 (permalink)
D/AChris
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Had similar issues with mine. Air Lift bags helped alot, but the bounce is still there. I think the only way to get rid of it is with an air hitch of some sort. Airborne, TrailAir, etc. At 35psi on the bags, I have taken away most of the bounce except for when going 75mph and hitting dips before bridges, etc. Hope this is what your wanting to know. Chris
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Old 05-20-2008, 01:03 AM   #4 (permalink)
emerson
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You are using a weight distributing hitch right? That and loading tongue heavy and using the air bags to stay level seem to be the best way to slow down the bounce.
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Originally Posted by firepoggy View Post
Long Story....

Bought an 04 2500HD with the 6.0 to tow 5er in sig. All the numbers I researched should have matched the truck.

Truck was rated to tow 10,000lbs. Trailer maxed at 10,100 (no where close to that though)

Pin weight is 1300lbs, should not be a problem, dropped truck about an inch when I raised the jacks.

When I towed the trailer the rpms were through the roof and the combo would rock back and forth somthin terrible.

Wife got ticked and said we need a bigger truck (YES MAMM). Purchased truck in sig. Same trailer....Same problem minus the rpms.

Any suggestions other than a $2500 air hitch?
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Old 05-21-2008, 10:06 PM   #5 (permalink)
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Get the airbags....I had "porpoising" issues also....killed it in it's tracks
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Old 05-21-2008, 11:32 PM   #6 (permalink)
RV Guy
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I don't think airbags is the answer. But more weight on the kingpin is. I've had two 2500HDs and the current sig truck; pulled three different 5th wheels over the years. All three 5th wheels had kingpin weight that was minimum 2000 lbs. The trucks sat level with that weight and was stable except for the most violent dips in the road. My only other recommendation would be Bilstein shocks to help with dampening.

I have a set of airbags in the garage that I've never put on. Never felt I needed them.
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Old 05-21-2008, 11:57 PM   #7 (permalink)
cowdoc
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Like what others have said...........not enough PIN weight.
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Old 05-28-2008, 10:31 PM   #8 (permalink)
Fetchum
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not trying to steal the thread here, but I have a similiar question. The chucking that was described... what if the 5er had been a travel trailer?

I have the same issue with bucking. My hitch weight is just over 1000lbs and I'm using an equilizer distribution/sway set up. (properly setup)

I upgraded to bilsteins, but it has not helped the issue.

would air bags help solve this?
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Old 06-04-2008, 08:51 PM   #9 (permalink)
Drumaniac3000
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Airbags would probably help but what percentage of your total weight is the 1000 lbs? If it is too low you might have similar problems as the 5er.
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Old 06-05-2008, 12:10 AM   #10 (permalink)
Kampzite
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Air bags on the truck or upgraded shocks may also work.

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