OK, just for grins on a cold, damp day...
I went out and measured the hinge point distances and the overall length
of the moment arm to the end of the lift arms (accounting for the angle,
measuring to the extended straight line from the fixed pin thru the
upper cylinder lifting point).
When down at ground level, the pertinent dimensions and angles are --
Well, let's see if I can do enough ASCII art to get a picture as crude
as it will be for referencing to...
Arm pin (A) Cylinder Pin (U)
X --------------X--------O End actuator attach pin (E)
--X Lower cylinder pin (L)
The (nearly) closed cylinder length at ground level (L-U) is 42"
Solving the small right triangle to the left of L we find the angle from
the horizontal to the line A-L is 75.5deg. Using the law of cosines
the angle ALE is 96.4. The cylinder lift angle is the complement of
these two or 180-(75.5+96.4) = 8.1deg.
The vertical component at U is then 11000*sin(8.1) ==> 1550 lb
Balancing the moment I got that the lift at U was 2200 lb, within 10% of
the 2350-lb breakaway spec (remember this is looking at only the one
FWIW (which ain't a lot, but it was cold, damp and blustery enough
yesterday I didn't try to do much outside).
Unfortunately, the photo bucket site didn't let me log on yesterday and
I couldn't get a flickr acc't to go thru either so gave up on the
posting of the pictures for the moment...
Chuckle...mine, too!!! :)
The earlier question got me wondering about what was the vertical
component in actual fact -- I was surprised to realize the lift
cylinders are only 8 degrees above horizontal when the bucket is on the
If it hadn't been such an ugly day out I'm sure I wouldn't have actually
Coupla' typos noted above and here are a coupla' pictures took while
"gathering up" in preparation of loadout. First is just shot of bales
as rolled; second shows a couple of piles. Each group is a stack of 34,
what'll go on a flatbed so can load at one time instead of having to go
gather up while loading. The last is the home place; can just barely
see the house thru the cedars/and two largest elms...a little white
siding shows through.
Located far SW KS, just about 50 mi from CO right on OK line.
It is pretty country when it rains; we'd had a nice one in late August
and another in early in Sept about two weeks before those were taken so
stuff had had time to green up nicely after swathing. I hadn't realized
the date wasn't set on the camera and intended to reset it but forgot
about it. Those were taken about 10 Sept last fall.
Unfortunately, that was also about the last moisture we've had since;
it's serious dry at the moment. The winter wheat is in poor shape where
got it in and up at all.
We've missed out on all the snows except for just a couple that gave us
only a dusting to a short inch each; all the actual moisture has been
north/east or south. That's a fairly typical problem out here
particularly in the La Nina pattern that tends to form a ridge of high
pressure over the western High Plains that pushes the jet stream/storm
track around to the east/north.
And the cyl might have a 18" stroke, and the loader might lift the
bucket 180 inches. This means, forgetting the weight of the arms and
buckets for a minute, you would only have a 1480 lb lifting capacity.
10:1 lift ratio means 1:10 load ratio.
I'm not sure what point you are trying to make, if any. In a typical
loader design, the cylinders act through a lever an fulcrum with
a negative mechanical force advantage. Even if the cylinder develops
a force of say 10 tons, the force available at the end of the loader
arms will be significantly less. Usually the geometry of a loader
or backhoe design has the maximum mechanical advantage available in
curling the bucket.
Better to be stuck up in a tree than tied to one.
Larry Wasserman - Baltimore Maryland - lwasserm(a)sdf. lonestar.org
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.