Unique boom pole design

[jenkinsph]

PeeJ, I agree on the horizontal pin as Scotty reasons. What I have done with hitch parts that are drilled through is install a heavy duty bushing with the proper 5/8" bore, weld it in place to prevent the wall from tearing.


Steve

 

[Stumppuller]

Since there is a top-mounted tension bar, it doesn't much matter whether the tube is assembled at a 45 or not. What it does do, however is provide a well presented surface for the two stabilizer rod weldments. I say a big thumbs up on this clean design.

 

[MJPetersen]

the connection pins should definitely go in thru the sides. ...The side act only to keep things in alignment, and while any hole in any surface will compromise strength, your sacrificing less, going thru the sides. ~Scotty

A second on that. It is going to be weakened significantly by a hole in the side only if that hole extends to the top or bottom. As long as there is a web above and below the hole the strength is compromised very little. That is where holes on structural items are always put to lighten the structure without loosing strength. Gradeall boom, aircraft spars, and truss applications are all examples.

Additionally, by putting the square tubing at a 45 degree angle severely weakens it. I did some experimenting once on square tube and it always failed at a 45 degree angle. the load swung left or right and the tube collapsed in that direction. it did not bend straight, it always bent one way or the other.

Mike

 

[J_J]

Here is a picture of a boom pole that I modified to work on my Power-Trac. It can still work on the 3 pt. It also has square hitch tube welded on the end for using different plug in', or extensions.

 

[Peej]

Thanks guys, this site is the greatest for info.
will try to get to the build after the 4th. I'll try to post pics.

 

[rdbrumfield]

I have had this loader extension for a few years. Made it out of 11/2 in pipe. It just locks into the cross frame i put on the loader. No pins or bolts.

What I have hanging is my quad and some tools. When I took it for shipping it was a bit over 1250lbs. I was surprised at that. Sending it to Anchorage as I am living near there now.

Normally I have a small pulley at the end of it, but it was on another piece of equipment at my shop. So I didn't dare winch the line in across the shackle.

 

[mrcaptainbob]

Good reply to Peej, Scotty. I also like Jenkinsph suggestion of doubling up around the hole. To be clear, however, the square tube at a 45* is strong and can support quite a load. It's failure is just at a lower load than if that same tube were square with the world. As long as it's not taxed beyond it's capacity, it should work fine. Of coarse, that's why I'm always repairing my stuff....