Installed new receiver hitch on utility trailer

   / Installed new receiver hitch on utility trailer #1  

lzicc

Platinum Member
Joined
Jul 20, 2009
Messages
723
Location
Pittsburgh, Pa
Tractor
Kubota B2650
I had to replace my coupler on my utility trailer. I ordered it from Etrailer. It is a bolt on. 3 bolts go on each side. The angle on the trailer was not long enough to catch the front bolt, so I installed it on top. If you look closely in the picture, you can see through the front hole. I would think this should hold fine, but wanted a second opinion. I used Grade 8, 1/2" bolts.

hitch.PNG
 
   / Installed new receiver hitch on utility trailer #2  
My opinion is TLAR.

(That Looks About Right). :D
 
   / Installed new receiver hitch on utility trailer #3  
Don't know the weight you're putting on the trailer but if it's your typical 2k-3k pound I wouldn't be afraid of it. Could weld it too.
 
   / Installed new receiver hitch on utility trailer #4  
Looks good to me, probably even better.
 
   / Installed new receiver hitch on utility trailer
  • Thread Starter
#5  
I sold my Mig when I moved, so welding is not an option unless I take it somewhere. I would think it would hold fine. It's 4k utility trailer payload. Like a regular landscape trailer. The most I haul is usually 2 yards of mulch. Plus I have the safety chains just in case. I was going to add 2 more bolts on top, but I don't want to go crazy either.
 
   / Installed new receiver hitch on utility trailer #6  
It looks like that for those top bolts to fail now you would have to pull the bolt apart (tension forces), where as if installed "correctly" they will fail by being cut perpendicular (shear forces).
I found some info on the internet (so it must be true!) that says "the ultimate shear strength of a fastener is typically about 60% of its ultimate tension strength." - So the bolts are "stronger" by being mounted through the top than the side.
That's my 2 cents. I'm not a mechanical engineer nor do I play one on TV. Maybe others can confirm or correct.

Grade 5 vs Grade 8 Fasteners - TineLok
 
   / Installed new receiver hitch on utility trailer #7  
It looks like that for those top bolts to fail now you would have to pull the bolt apart (tension forces), where as if installed "correctly" they will fail by being cut perpendicular (shear forces).
I found some info on the internet (so it must be true!) that says "the ultimate shear strength of a fastener is typically about 60% of its ultimate tension strength." - So the bolts are "stronger" by being mounted through the top than the side.
That's my 2 cents. I'm not a mechanical engineer nor do I play one on TV. Maybe others can confirm or correct.

Grade 5 vs Grade 8 Fasteners - TineLok


That's all fine and well, but you need to add context (forces involved) to really pass on such circumstantial hyperbole. Are those forces so high that they should be applied by the ton and really don't apply to a little utility trailer.

Context is everything...
 
   / Installed new receiver hitch on utility trailer
  • Thread Starter
#8  
So what are you saying Snobdds? Do you think what I did suffices? Technically, to install the coupler per manufacturer, there should be 3 bolts on each side. Since I can't put the 3rd bolt on each side, I moved it to the top instead. Just not sure how much of a difference it makes being mounted on the top vs the bottom if any.

If look at the coupler and how I installed it, it looks it would hold very well, but that is just eyeing it up.
 
   / Installed new receiver hitch on utility trailer #9  
I agree maybe little weld here and there for piece of mind.
 
   / Installed new receiver hitch on utility trailer #10  
So what are you saying Snobdds? Do you think what I did suffices? Technically, to install the coupler per manufacturer, there should be 3 bolts on each side. Since I can't put the 3rd bolt on each side, I moved it to the top instead. Just not sure how much of a difference it makes being mounted on the top vs the bottom if any.

If look at the coupler and how I installed it, it looks it would hold very well, but that is just eyeing it up.

Your fine. There is always someone that get's overly technical, but sometime those specs apply to loads and forces that a little trailer will never encounter. That's why context is everything.
 

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