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Old 10-06-2012, 10:59 PM   #1
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too much bounce

I have a 27-foot Wildwood 5th wheel. I'm pulling it with a 2000 GMC 2500 Pickup truck with a 6-Liter gas engine. My truck is NOT an HD model but it is a 3/4 ton truck. I get a lot of bounce going down the road when hauling my 5th wheel. I can be on a smooth surface and it will still start bouncing up and down. Does anyone know what can be done to eliminate the bounce? This is the first 5th wheel I have ever had and I'm considering getting rid of it because I could never go on a long trip with it bouncing the way it does. The farthest I have traveled is about 3-hours from home and the drive and the bouncing drove me nuts. Could it be my truck not being an HD?
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Old 10-07-2012, 12:05 AM   #2
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Have you replaced the shocks - yet? Maybe a set of heavy duty shocks would help.
Do you run the truck tires at max pressure?
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Old 10-07-2012, 05:54 AM   #3
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Hey neighbor !
Lived in that little town for a while - daughter graduated High School from there way back in the 80's

Yep, white knuckle driving doesn't make for a FUN vacation, does it

lot's of possibilities, as asked,
are ALL your tires at the correct pressure ?
is everything mechanical sound on both your tv and 5er?
sorry, but you may have too much trailer for your truck ?
the weight police will be along shortly!

What type of pin box do you have ?

I can watch my 5er bob and weave all over the place and the trailer shock and airbags are doing their job as very little of it gets to the truck...

good luck with it... and not that I'm an expert, but glad to get together and help !
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Old 10-07-2012, 10:55 AM   #4
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All good advice so far. Also check the weight distribution in your trailer. Too much weight fore or aft of the axles can create unpredictable performance. At least 15-20% of the fifth wheel's weight should be on the hitch.

Get the combo weighed on truck scales where the truck's front and rear axle weights can be obtained with the trailer attached. Then disconnecting the trailer and weighing the truck by itself will give you the information you need to make that calculation.
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Old 10-07-2012, 01:00 PM   #5
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too much bounce

Thanks for all the responses. I will check tire pressure and have the shocks checked. I'll also visit a shop and make sure the truck is equipped properly for the weight I'm pulling. I originally was told that it was but I've always had a concern with it not being an HD model. Thanks again.
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Old 10-07-2012, 01:36 PM   #6
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Quote:
Originally Posted by Half Dimes View Post
All good advice so far. Also check the weight distribution in your trailer. Too much weight fore or aft of the axles can create unpredictable performance. At least 15-20% of the fifth wheel's weight should be on the hitch.

Get the combo weighed on truck scales where the truck's front and rear axle weights can be obtained with the trailer attached. Then disconnecting the trailer and weighing the truck by itself will give you the information you need to make that calculation.
I agree. If your to lite on the front may cause all kinds of problems. Makes for dangerous driving also.
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Old 10-07-2012, 05:16 PM   #7
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When we bought our first fifth wheel, the drive home with it almost made me return it. Once we had the weight proportions where they needed to be, it towed like a dream.

I also switched the pin box to a 5th airborne (Got it for cheap) that made the towing experience even more of a pleasure.
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Old 10-07-2012, 07:03 PM   #8
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Yeah, there's something wrong. I have a `97 Dodge Ram 3/4T diesel with the tow package and it was rock steady pulling my 12.1K, 33' 5er. Even when I tried to make it fish tail, it wouldn't. The only bounce was over RR tracks or road dips. My pin is 1" forward of the axle center line. I would start with truck shocks.
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Old 10-07-2012, 07:08 PM   #9
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Most likely the rear shocks. It's typical for factory shocks to be tuned for a smooth(er) ride when empty which means not enough rebound damping when loaded or towing. The result is that the rear of the truck wants to bounce up and down.

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Old 10-07-2012, 07:10 PM   #10
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Sounds like you need to invest in a set of Rancho shocks....

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Old 10-07-2012, 08:46 PM   #11
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I just put Bilstein 5100 on the four corners and it makes all the difference over stock shocks.
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Old 10-07-2012, 08:54 PM   #12
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Bilstein - for the win!!
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Old 10-07-2012, 11:18 PM   #13
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Sounds like your pin is directly over the axle instead of infront of it and you are way light on the front end weight. Pin weight needs to be 20% or so, have you weighted your axles.
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Old 10-08-2012, 09:30 AM   #14
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too much bounce

The pin is directly over the axle. I doubt the shocks are what I need. This truck is not the HD model and it has an incredibly smooth ride for a pickup truck. I'm thinking now that the shocks are not the heavy duty kind that I need for this kind of hauling. I've pulled a bumper pull trailer and there is never a problem but this is my first 5th wheel with this truck. I'm clueless on a lot of this stuff. How do you change the weight distribution in the trailer to have more weight up front? By the way, when I'm going up a hill or stepping on the gas there is no bounce. The bounce comes along when I get to cruising speed on a level surface and all of a sudden it'll start.
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