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Old 05-11-2016, 09:04 PM   #1
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Maiden Voyage Question #1 (towing)

OK, got the new 5'er home about an hour ago. 2 day trip from Ohio. Have 3 things I need help with.........the biggest is towing.

Honestly, I'm pretty disappointed. BUT, I'm hoping this has some kind of 'easy adjustment' type answer. IF not, wow.........not sure what to do.

I could explain in detail for pages.........but bottom line is that on smooth roads it pulls great. No issues really. I can REALLY tell it's back there......it's a behemoth! Not going go from 40 to 65 in any kind of record, for sure. But still, it's fine.

BUT on bumpy interstate (read 64.49948% of America!!), it is beating me to death. I've pulled all kinds of trailers in my life, boats, 29' Grey Wolf, utility trailers, etc.........and this is the worst. And I THOUGHT I had it all figured out in advance........Dually truck (that y'all talked me into, thank you so much, nothing else would work for sure!!), trail air king pin with the right amount of air, B&W companion hitch..............and still, this.

It porpoises a lot.........push/pull........but mostly it just bottoms out.

I can only think of two possibilities.......but I'm a NOOBIE on 5'ers or goosenecks (bed connections) and I just don't know. My first thought, and hope, is that the B&W hitch is adjusted wrong. I know it has 9 'holes' to bolt into the frame that's attached to the bed.........and it was put in middle since I bought it before we had the trailer. I'm thinking (hoping) it might could be moved forward getting more weight on truck. ???? I have no idea.

The only other possibility I can think of is ....... air bags. Another expense. I might do that anyway.

The third possibility is "This is just life, deal with it" but man.......I don't like that one.

Any ideas are appreciated.

Thanks.

(I have a couple of other things but won't mix them on one thread)

Bill
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Old 05-11-2016, 09:24 PM   #2
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Some people will argue this,but Ive been pulling these things for quite a while and positiong the pin center or gooseneck ball 2" or so ahead of the centerline of the rear axels will transfer some wieght to the front and result in better directional stability.Most of my experience has been with goosenecks,horse trailer,equipment trailers and now a toyhauler.To find the true center of the axels you need to level the truck (front to back) then set a 4' level vertically at the*center of the rear wheels on both sides of the truck.Connect these points with a string,thenuse the same 4' level to project the pin center up to the string.This is the only way you can accurately find this spot.When you are hooked up and ready to go the truck should be level too.An inch or 2 high in the rear is ok but under no circumstances should the front be lower than the rear.Obviously the trailer frame should be level as well.Then its time to head to the Cat scale and see how the axels are loaded.
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Old 05-11-2016, 09:31 PM   #3
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Well, I understand.........I do. But this truck has a DIC display that tells me if the truck is 0" (level), 1", 2" or whatever left to right, or front to back...........right on the display panel. And it says 0 inches both ways.

Maybe that's not 100% accurate, but why would I be experiencing such radical bouncing and porpoising?
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Old 05-11-2016, 09:49 PM   #4
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I have F350 SRW but I found on my new 5er I was about 3/8 of inch from my over load springs making contacting. Smooth road was fine but if I got on rough road you feel the back end go down - make contact over load springs and spring back up with a added force. I put air bags on the TV and now if I pump them up to 35psi it takes out most of the roughness on rough roads but rides rougher on smooth roads.

I have a B&W hitch with a Mor-Ryde pin box and my pin box is set about 2" in front of the rear axles and in it's lowest position. My 5er sits about 1/2 inch nose high. I didn't have this problem with my lighter Crusader and didn't show up till I got the new heavier 5er.

Sorry to hear about you problems maybe one of the DRW guys can solve your problem, I have only test drove DRW and have never towed with one.
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Old 05-11-2016, 09:52 PM   #5
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My first 5er porpoises a lot and I found that the dealer filled the fresh water tank which was behind the axles and caused a light pin. Emptied it and the problem was solved.
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Old 05-11-2016, 09:53 PM   #6
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Quote:
Originally Posted by CWSWine View Post
My first 5er porpoises a lot and I found that the dealer filled the fresh water tank which was behind the axles and caused a light pin. Emptied it and the problem was solved.

I dumped all tanks at KOA this morning before we left...........same problem, no difference.
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Old 05-12-2016, 02:35 PM   #7
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When you say 'bottoms out' I'm assuming your truck springs are hitting the overloads like CWSWINE was talking about.

I would check my shocks first, but your truck is new so you would assume they are good. Perhaps airbags are necessary. Most of my friends just add them automatically to their new trucks.

Sounds like you have all the right equipment! With your Trail Air kingpin you shouldn't feel much push/pull (I'm assuming it's the one with an air bag and a shock absorber in it). I get a better ride when my air pressure in my sidewinder kingpin is in the middle of its range.

If your truck and RV are both within an inch of level the only thing I would suggest is to check the pin weight of your RV and then check the load balance.

Good luck!
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Old 05-12-2016, 02:51 PM   #8
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Make sure that the king pin of the 5th is riding at least an inch forward of the center line of the rear axle. I have seen some 5th wheel hitches installed as much as 8 inches behind the center line of the axle causing many of the type problems that you are having. Also make sure the 5th wheel is riding as level as possible, you may have to adjust the hitch or the pin box to make this happen. If you have to adjust them make sure that you have a minimum of 6 inches between your 5th wheel and the truck bed rails.
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Old 05-12-2016, 04:25 PM   #9
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Originally Posted by clr View Post
Make sure that the king pin of the 5th is riding at least an inch forward of the center line of the rear axle. I have seen some 5th wheel hitches installed as much as 8 inches behind the center line of the axle causing many of the type problems that you are having. Also make sure the 5th wheel is riding as level as possible, you may have to adjust the hitch or the pin box to make this happen. If you have to adjust them make sure that you have a minimum of 6 inches between your 5th wheel and the truck bed rails.
This was my original thought. I'm in a mess here at home, and we leave tomorrow, so can't deal with this very much till we get back end of May. I don't know where it sits........but it is STILL hooked up and I'm going to check that very thing here in a bit.

So far today I've had to have my house septic pumped out (solved that problem!) and now the central a/c guy is out there. A/C unit has 5 lbs freon and holds 15!!!!! Dunno where it's leaking.

The Trail Air had to have some air, but dealer put it in, and it is sitting exactly where the arrows say for it to be. I am thinking it is set too far back.........but not sure there's enough adjustment to make that kind of difference.

Edit: Just looked........just from 'eyeballing' it, the center of pin seems to be in center of wheel on rear axle.......... but I think the B&W can be adjusted frontwards........not sure. Surely that would help even though minor.

Not sure what air bags cost..........but I fear I'm about to find out.
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Old 05-12-2016, 09:10 PM   #10
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Experiment with the air in the pin box. Mine was noticabley rough when I brought it home from the dealer, and after sitting for the winter it was a little low when I went out last month and it rode a whole lot better, but was not bottoming out. I will see where my pin is relative to the back axle tomorrow when it is light and let you know.
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