Here are the ACTUAL Lift Capacities of the RK24 L75 FEL @ Varoius Heights (w/ Graph!)

[LD1]

1. Yes
2. Yes. But I didn't see that measurement listed. Perhaps I overlooked it. But knew the difference would be small.

At the end of the day, it's all about the ratio that the cylinder moves in comparison to the bucket pin.

If the cylinder moves an inch, and the bucket rod moves 5 inches....you simply have 1/5th the power of the hydraulics (minus the static weight).

Through out the travel range, since the bucket edge is further forward than the pin....it moves a greater distance. There fore it can move proportionally less.

Think of the cylinder in terms of doing "work". And work = force x distance.

The cylinders are only capable of a given amount of work. You need them to do that work over a greater distance...the force will be less.

The complexity of a loader is that the cylinder is on an angle, and the angle changes with load height. Thus the higher you raise, the less lifting force you can apply to the loader and the greater the wasted force trying separate the loader arm from the upright post.

You want some fun....put a pressure gauge tee'd into the lift hydraulics. Play around with it.

I had one on my loader. Bout 500psi just to lift the dead weight of an empty loader.

Not trying to take anything away from the capability of these little machines. But based on a 40mm cylinder, and knowing the geometry of the loader now....I am doubting the lift capacity you scale was you.

I'd actually load the loader with a known weight. See what she will do. At some point you will find the magic weight somewhere between what it CAN lift off the ground and CANNOT lift to full height. Lift it as high as you can and see how the height compares to your scale.

 

[atsah]

I'd actually load the loader with a known weight. See what she will do. At some point you will find the magic weight somewhere between what it CAN lift off the ground and CANNOT lift to full height. Lift it as high as you can and see how the height compares to your scale.

This is what I suggested he do on the first page of the thread.

My GC DL95 loader spec is upwards of 850lbs at full height, my tires are loaded and I have 600lbs in my ballast box, I have an oversized bucket and lifted a "known" 1000lb item", it lifted it to half height and stopped. The power is in the curl function on my tractor, it will curl until you flip it over if you're so inclined..

Trying to lift 1,600lbs to full height on any SCUT is a bad idea for many reasons.

 

[LD1]

This is what I suggested he do on the first page of the thread.

My GC DL95 loader spec is upwards of 850lbs at full height, my tires are loaded and I have 600lbs in my ballast box, I have an oversized bucket and lifted a "known" 1000lb item", it lifted it to half height and stopped. The power is in the curl function on my tractor, it will curl until you flip it over if you're so inclined..

Trying to lift 1,600lbs to full height on any SCUT is a bad idea for many reasons.

That 1000# to half height falls right inline with your spec

 

[atsah]

That 1000# to half height falls right inline with your spec

That's kind of what I figured..

 

[snymat68]

This is what I suggested he do on the first page of the thread.

My GC DL95 loader spec is upwards of 850lbs at full height, my tires are loaded and I have 600lbs in my ballast box, I have an oversized bucket and lifted a "known" 1000lb item", it lifted it to half height and stopped. The power is in the curl function on my tractor, it will curl until you flip it over if you're so inclined..

Trying to lift 1,600lbs to full height on any SCUT is a bad idea for many reasons.

Your last sentence is why I hesitate at a real world test.

I was thinking though, I wonder if my scale's readings were off BECAUSE I was using the "hold the highest value" setting. Even though I was being careful to slowly apply pressure to the chain, if their happened to be a spike at the time the chain got taught, it would have held that false reading. I might try some more tests without the hold setting enabled, just a live reading, and hold steady pressure on the joystick until the reading evens out. The scale is accurate to the pound on tests up to a few hundred pounds, weighing known masses like bags of rock salt, myself, etc. I know that doesn't necessarily mean it's accurate at higher weights, but based on the reviews of the scale, tests I did, and tests others did, I have no reason to suspect it ISN'T accurate. I agree that my plotted values do seem too high, but I'm willing to be the error is due to me (not pulling exactly vertical, the hold/spike theory, etc.), not the scale.

I want to get to the bottom of this and get some good numbers.
And I'm one to admit it if I'm wrong, so I won't be trying to skew any results or anything like that.
Stay tuned for more tests.

 

[atsah]

Your last sentence is why I hesitate at a real world test.

I was thinking though, I wonder if my scale's readings were off BECAUSE I was using the "hold the highest value" setting. Even though I was being careful to slowly apply pressure to the chain, if their happened to be a spike at the time the chain got taught, it would have held that false reading. I might try some more tests without the hold setting enabled, just a live reading, and hold steady pressure on the joystick until the reading evens out. The scale is accurate to the pound on tests up to a few hundred pounds, weighing known masses like bags of rock salt, myself, etc. I know that doesn't necessarily mean it's accurate at higher weights, but based on the reviews of the scale, tests I did, and tests others did, I have no reason to suspect it ISN'T accurate. I agree that my plotted values do seem too high, but I'm willing to be the error is due to me (not pulling exactly vertical, the hold/spike theory, etc.), not the scale.

I want to get to the bottom of this and get some good numbers.
And I'm one to admit it if I'm wrong, so I won't be trying to skew any results or anything like that.
Stay tuned for more tests.

It's interesting that's for sure, I get why you want to get to the bottom of you're results, we have people here "not me' :laughing: that are way more technical at measurements..

 

[snymat68]

It's interesting that's for sure, I get why you want to get to the bottom of you're results, we have people here "not me' :laughing: that are way more technical at measurements..

If there was a support group for SA (Spreadsheeters Anonymous) I'd probably have to attend. :laughing:

 

[LD1]

Your last sentence is why I hesitate at a real world test.

I was thinking though, I wonder if my scale's readings were off BECAUSE I was using the "hold the highest value" setting. Even though I was being careful to slowly apply pressure to the chain, if their happened to be a spike at the time the chain got taught, it would have held that false reading. I might try some more tests without the hold setting enabled, just a live reading, and hold steady pressure on the joystick until the reading evens out. The scale is accurate to the pound on tests up to a few hundred pounds, weighing known masses like bags of rock salt, myself, etc. I know that doesn't necessarily mean it's accurate at higher weights, but based on the reviews of the scale, tests I did, and tests others did, I have no reason to suspect it ISN'T accurate. I agree that my plotted values do seem too high, but I'm willing to be the error is due to me (not pulling exactly vertical, the hold/spike theory, etc.), not the scale.

I want to get to the bottom of this and get some good numbers.
And I'm one to admit it if I'm wrong, so I won't be trying to skew any results or anything like that.
Stay tuned for more tests.

I was gonna ask that but didnt.

I think your hold highest value is the issue. Dont know how sensitive the scales are, but the "moment" the slack is out of the chain there is a spike.

Let it give real-time results. Have a second person read what it says as you are testing. Or orient it so you can read while you are preforming the test.

Looking forward to the results

 

[atsah]

If there was a support group for SA (Spreadsheeters Anonymous) I'd probably have to attend. :laughing:

I would be taking break with ya...:drink:

 

[snymat68]

I was gonna ask that but didnt.

I think your hold highest value is the issue. Dont know how sensitive the scales are, but the "moment" the slack is out of the chain there is a spike.

Let it give real-time results. Have a second person read what it says as you are testing. Or orient it so you can read while you are preforming the test.

Looking forward to the results

I can easily see the readout by standing beside the tractor and holding the joystick.
If I have the time tonight I might run some more tests.