I just installed a Mor/Ryde RPB72-1621HD-03 pin box and it hasn't cured the chucking nor the start-stop crunch. The trailer is a 2012 Rockwood 8280WS 5th wheel with a empty weight of 7,503 pounds, a max weight of 9,134 pounds with a typical load under 8,500 pounds. I tow with a 2012 Ford F-250 Super Duty with less than 5,400 miles (I don't believe the truck is the issue). The 03 pin box is the lowest rated max trailer weight per the manufactures chart shown as 11,500 pounds. I think that the manufacture wasn't prepared for the new ultra lite 5th wheel trailers and that the shear spring in the box is to heavy for the light weight. Other than the manufacture hasn't responded to my last 3 emails requesting help I feel like I'm on my own. Has anyone had this same issue but most of all has Mor/Ryde been of any assistance? To say the least the Lippert pin box is lighter and the Mor/Ryde offers no improvement to the chucking with an additional 70 plus pounds of added weight.

Give Mor-ryde a call they are great to work with!!

If you have a Reese....the clunk is coming from the hitch! Reese jaws DO NOT completely encircle the king pin and they clunk. I threw mine in the scrap pile and got a B&W...clunk gone!

There are different rubber sheer weights - its very possible you have one for a heavier rig. Keep trying Mor Ryde.

Atom Ant wrote:There are different rubber sheer weights - its very possible you have one for a heavier rig. Keep trying Mor Ryde.Totally agree. The box has to be fitted to the rig. My MorRyde came with the trailer, but it is wonderful after the other trailer I had with a "regular" pin box.

I just put over 300 miles on my new MorRyde in the last few days. I also have a new B&W Patriot. I have pretty much the same set up as the OP. 5'er weighs 9,000lbs loaded. 2012 Ram 2500 CC LB CTD. I still have some chucking. It's more of a controlled feeling than with no MorRyde. I went on some really rough roads today (OR31-OR395). The 1st part was horrible, but the new MR did a decent job. I also had them build it with the under 11500lb GVW springs or rubber things. I did notice that it moves at least an inch back and forth. You could see the dust marks on the pin from where it sat all week prior to towing. So I know it's doing the job. I still get some chucking from certain situations like dips and bumps in the same spot. I have no bump on start and stop or anything like that. It's the RB72-1716-3 style.As a whole I'm 80% satisfied. It's not perfect but it's better than before and the ride is something I can live with. To the OP, not sure if you will get a 100% no chucking ride. But if you didn't get anything different after installing the new MR, then a call to MR needs to be made.

Mor/Ryde Pin Box | Good Sam Community

15 Replies

goducks10
Explorer
Aug 01, 2013
I just put over 300 miles on my new MorRyde in the last few days. I also have a new B&W Patriot. I have pretty much the same set up as the OP. 5'er weighs 9,000lbs loaded. 2012 Ram 2500 CC LB CTD. I still have some chucking. It's more of a controlled feeling than with no MorRyde. I went on some really rough roads today (OR31-OR395). The 1st part was horrible, but the new MR did a decent job. I also had them build it with the under 11500lb GVW springs or rubber things. I did notice that it moves at least an inch back and forth. You could see the dust marks on the pin from where it sat all week prior to towing. So I know it's doing the job. I still get some chucking from certain situations like dips and bumps in the same spot. I have no bump on start and stop or anything like that. It's the RB72-1716-3 style.
As a whole I'm 80% satisfied. It's not perfect but it's better than before and the ride is something I can live with.
To the OP, not sure if you will get a 100% no chucking ride. But if you didn't get anything different after installing the new MR, then a call to MR needs to be made.
btd35
Explorer
Aug 01, 2013
Atom Ant wrote:
There are different rubber sheer weights - its very possible you have one for a heavier rig. Keep trying Mor Ryde.

Totally agree. The box has to be fitted to the rig. My MorRyde came with the trailer, but it is wonderful after the other trailer I had with a "regular" pin box.
Atom_Ant
Explorer
Jul 31, 2013
There are different rubber sheer weights - its very possible you have one for a heavier rig. Keep trying Mor Ryde.
mguay
Explorer
Jul 31, 2013
If you have a Reese....the clunk is coming from the hitch! Reese jaws DO NOT completely encircle the king pin and they clunk. I threw mine in the scrap pile and got a B&W...clunk gone!
daily_double
Explorer
Jul 31, 2013
Give Mor-ryde a call they are great to work with!!

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Mor/Ryde Pin Box

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