How would you mount this.

Adirondack case guy

Well-known Member
I bought a toung jack at HF yesterday for my wood trailer that I am building. Just for the heck of it, I read the installation instructions. This is a scan of the instructions. Do you agree, or would you put the flange on the bottom and weld it fast that way. Instructions makes no sense to me, unless the trailer ntoung is paper thin.
Loren
a240860.jpg
 
If the photo matches the HF jack that you purchased, it looks like they want the upper lip of the mounting plate to sit on top the trailer tongue.
a240864.jpg
 
Easier to weld on the upper side, otherwise it is an overhead weld. The weld would be on the compression (upper) side of the tongue. Things break under tension (bottom side), usually not compression.
 
I am fabing up the chassis, and I am rotateing it 360 to facilisate no overhead welding. In my opinion with the jack welded to the side of the toung, more welding surface on the bottom, makes more sense to me. All the pressure on the jack would be outward on the bottom when supporting a heavy load.
Loren
 
it seems as though everyone welds them on that way ,I on the other hand weld them on with the angled lip on the underneath.
 
I think it makes more sense to have the lip underneath. I would think it would be stronger. Question is the hole going to be in right spot to lock the jack?
 
Weld it as you see fit. The last one I mounted, I took the big snap ring off, drilled and countersunk the holes, and bolted it to a wooden tongue with 3/8 flathead screws.
 
The flange on top is sufficient enough. I have some of those jacks and they are rated at 2000#. Weld the top with flange up and weld the sides with vertical up beads. This is how we attached 5000# jacks on fertilize buggies.

If an accident were to happen, I want the jack to break off instead of bending the tongue. Nathan
 
Mine are all attached with U-bolts, but I suppose it's cheaper to sell them with just a weld plate. I prefer not to weld on the side of a trailer tongue, it can weaken them, if I had to, I would weld lengthwise on the top and bottom.
 
I always put the lip on top Loren. But then I'm just an ammatuer fabricator so I can't be trusted.
 
Be careful! I bought one like that from HF and I could not keep the snap ring from jumping off if there was any side pressure. I scrapped it as it was dangerous.
 
I would weld it on top.

If you get a good weld on 3 sides, and something happens severe enough to tear it off, chances are something about the jack would fail before the welds do.

But the main reason (beside that's the way it is designed to work) would be for ease of cutting it off if it did fail. A lot easier to do it from the top than laying under it!
 
Looks like the flange goes on top it says nothing about welding the flange. The flange is there (on top) to give added support in Fwd, aft & in lateral movement only to some degree. The stress in this case would be at the top of the bracket in 3 directions pushing forward backward and to one side. Only if your pulling it toward you when your standing on the side of the jack is the stress on the bottom. In either case flange on top or bottom and the flange if welded is in compression on one side when moving fwd or aft and the other side is in tension. In the case of moving or rolling it a lot the flange is better placed on top. I'm Not saying don't weld the flange either far from it just pointing it out everyone has their way of doing things you can find very differencing option's on installation I would do it as you see fit particularly if your only concern is in lifting and not moving the trailer. My guess is though you had already made your mind up before you asked the question. Never known you to hee haa around Loren
Just my 2 cent

Best of luck with it Byron
 
I bought one of those Jacks once. You had to rotate the handle counter clockwise to raise the trailer. Opposite of every other jack I have ever used. I couldn't bring myself to weld it on. Took it back and bought a bulldog from TSC for twice the price.

And to answer your question... I have always welded the flange on the bottom, but I don't recall ever getting directions with them.
 
ACG, you screwed up . You only read the instructions after you hit a snag. LOL. I have seen them put on both ways.
 
(quoted from post at 04:02:40 10/26/16) ACG, you screwed up . You only read the instructions after you hit a snag. LOL. I have seen them put on both ways.

Now casenut1 don't get his dandruff up ACG is probably one of the most knowledgeable persons on this site I have personably benefited from that wealth. Yea I know the reason you asked the question is because on first glance anyone would think the flange should go on the bottom simply because we don't see the trailer in motion for this installation we see only the lifting and lowering. There's very little I can help folks with on tractors but because my job required a fair amount of analyses I thought it was a good time to return the many favors and help I have been given. In the grand scheme of things I seriously doubt anyone thinks it will make much difference. However If my post sounded condescending rather than informative my apologies.
Byron
 
The purpose for the flange is to make it easy to install the jack and have the pin holes in the correct position, not to support the load. Put it on the top or bottom which ever trips your trigger. IF the welds are so poor that it needs to be on the bottom a person might consider hiring the welding done.
 
Not trying to po him . Just poking a little fun. Personally I don't read them until I get in trouble.
 
The one of those that I did I welded it up per the instructions. I am confident that the instruction writers are almost always smarter than me and know more about their stuff.
 
Weld it any way you like but the lip is there to ensure you have knuckle clearance when you go to turn the crank.
It all depends on the size of metal your trailer is made of.

Picture mounting it to the bottom of a 6 inch frame versus a 2 inch frame.
 

IMO the quality of the weld is more important than the position of that particular fixture. What's fun is mounting one of those jacks to a round tongue. More difficult to get a good weld, ask me how I know.

KEH
 
(quoted from post at 17:49:28 10/25/16) I bought a toung jack at HF yesterday for my wood trailer that I am building. Just for the heck of it, I read the installation instructions. This is a scan of the instructions. Do you agree, or would you put the flange on the bottom and weld it fast that way. Instructions makes no sense to me, unless the trailer ntoung is paper thin.
Loren
a240860.jpg
On my trailer, the flange is on the top and it is welded on top and two sides.
Bottom is open to allow any moisture to escape, as it should be.
 

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