AxleHub
Elite Member
Gee whiz! This thread has me pondering deeply and introspectively whether I'm really an SCUT kind of guy or a large CUT sort of fella or maybe even a UT person, because the zen and karma are apparently so radically different, or something. I may need counselling to sort my feelings out. But meanwhile, the following thoughts occurred, and might add something to the discussion.
No matter what size of machine we're dealing with, its safe weight handling ability depends a series of factors. I can think of a few:
1. Hydraulic capacity. Some machines are juiced-up more than others for whatever reason, and have more raw lifting power. Axle's original test, for example, showed more capability than the published specs for his GC.
2. Tractor dimensions. The tractor's length, width, height, weight and FEL geometry absolutely determine how it will behave when carrying a load under dynamic conditions. Several of us have made this point in various ways, I think trying to inform that sometimes just because a load can be lifted, maybe the tractor's dimensions can suggest it's less than prudent to do so. Axle's GC, for example, has pretty much the same size and weight as a BX, so it would be roughly about as stable under similar conditions, even if its hydraulics might be stronger. Rest assured there is no impure prejudice against SCUT's in my soul inspiring me to point this out.
3. Real world working conditions. This equipment works in all kinds of terrain and conditions... they ain't forklifts operating on a concrete floor. This is why the dimensions are so important. What works great under perfect conditions can be a disaster in the making on a hillside, rutted ground, in the muck, etc. I once watched a Bobcat do a perfect faceplant with a full bucket up high due to a small rut. All the lifting power in the world on a short wheelbase!
4. Structural considerations. If a manufacturer rates his tractor for 600 lbs payload in the FEL, is loading it up with 900 lbs something you really want to be doing regularly simply because your hydraulics will lift it? What's the design load of that front axle? What about the chassis? And those loader arms? By analogy, how do you feel about getting on an airplane whose wings have be subjected to maximum g forces too many times? Your tractor. If you want it to last, use it accordingly.
Finally,
5. The operator. What can I say. Good judgement always wins in the long run.
Cheers.
I think you had a very good and pleasant post Grandad.
One of the things I did when I did the testing that started this thread was to be very specific about my intentions and parameters. I've gotten a lot of "comments" about the manufacturer ratings and "overweighting". And that blah blah blah about maximum height.
I was incredibly specific about my heights of lift . . because I don't care what it lifts at maximum height. I know I can fill my bucket full of firt or gravel and lift it to its maximum easily . . Anything more doesn't make any difference to me. But at 30 inches and 42 inches . . that isn't rated and those numbers mean alot to me. Then I can adapt my safe operating margins from that (as I've posted often).
I liked your post Grandpa.