Slope...what is safe?? Anyone here ever roll over?

[buckeyefarmer]

I use clinch factor to measure slope, but that's not a standard...

 

[Texasmark]

There is more to it besides slope and CG. Transient CG, like when an uphill rear tire hits a rock, or falls in a crevice and rebounds are your items to consider with speed a direct contributing factor.

 

[k0ua]

A square + B square=C square. Or put another way the sum of the squares of each side of the triangle = the square of the hypotenuse. Or so Pythagoras seemed to think. Learned that one in 8th grade math. Yeah I am old enough to have went to school when they actually taught some things.

 

[Jstpssng]

A square + B square=C square. Or put another way the sum of the squares of each side of the triangle = the square of the hypotenuse. Or so Pythagoras seemed to think. Learned that one in 8th grade math. Yeah I am old enough to have went to school when they actually taught some things.

Oh, is that what it is? Heck I used it this afternoon, to calculate where the corners of my garage are going to land.

Then I managed to the rear wheel off the ground again... and I wasn't even on the tractor. I was screening loam into the sterilizer in the back of my pickup, and had the bucket raised to a little above tailgate level. The soil was a little wet, and I suddenly realized that as I drove the shovel into it, the LR was coming off the ground. I've never worried about it until I bought this tractor, now I'm saving up for a set of rear weights.

 

[k0ua]

Oh, is that what it is? Heck I used it this afternoon, to calculate where the corners of my garage are going to land.

Well that can help you find sides you can't directly measure, but the Sine and Cosine functions can help you calculate angles. or if you know the angles, it can help you calculate sides.

You can so some of this without a calculator if you can remember the special case of the right triangle with 45 degree corners, You can set up the sides in a 1 , 1 ratio and the hypotenuse will be the square root of 2 or approx 1.414. This can be handy to remember.

 

[bcp]

Sides of a triangle equal to 3, 4, and 5 (or multiples of) make a 90 degree corner.

Bruce

 

[Jstpssng]

Well that can help you find sides you can't directly measure, but the Sine and Cosine functions can help you calculate angles. or if you know the angles, it can help you calculate sides.

You just need to remember that old Indian... SOH CAH TOA. (Sine = opposite/adjacent, Cosine = adjacent/hypotenuse) Tangent=opposite/adjacent.)

Decades ago I was laying out and surveying thinning blocks for precommercial thinning. I had a hand held programmable calculator (Hewlett-Packard 11C) and wrote a program for it so that I knew the error of closure and acreage before I left the woods.
It saved me a lot of time, which translated into money.

 

[SandburRanch]

Has anyone ever investigated a roll over accident and discovered a rear tire flat?

Another thought. Does the torque of the pto shaft play a role in turning a tractor over when mowing in a particular direction?

 

[k0ua]

You just need to remember that old Indian... SOH CAH TOA. (Sine = opposite/hypotenuse, Cosine = adjacent/hypotenuse) Tangent=opposite/adjacent.)

Decades ago I was laying out and surveying thinning blocks for precommercial thinning. I had a hand held programmable calculator (Hewlett-Packard 11C) and wrote a program for it to tell the error of closure and acreage before I left the woods.

Thanks, i remember that now that you told me!.. I had forgotten that old memory device.

 

[k0ua]

Has anyone ever investigated a roll over accident and discovered a rear tire flat?

The one universal thing you will see in almost all roll over tractor accidents is the FEL raised too high. At least the pictures of almost every one I have ever seen.

 

[SandburRanch]

The one universal thing you will see in almost all roll over tractor accidents is the FEL raised too high. At least the pictures of almost every one I have ever seen.

So for time being let's take the FEL out of the equation.

 

[MossRoad]

I thought a 45 degrees as it relates to hill sides is considered a 100% slope. So that picture of Moss Road's is a tractor on a 100% slope?

Yep. 100% slope. 100% grade. 45 degree angle.

 

[k0ua]

Yep. 100% slope. 100% grade. 45 degree angle.

too darn steep to be messing with..

 

[MossRoad]

too darn steep to be messing with..

Yeah, there's a reason mother nature has ground cover! :laughing:

 

[dfkrug]

I could ask your question another way;
Why do we always have this confusion about % slope and degrees of slope. Why in heck can't we all just use the EXACT same nomenclature when we talk about grades. Why not just use % slope. As in this is a 66% slope. Why do we need to refer to slope in degrees? Doesn't % define the slope exactly?

Both will define a slope exactly, but I contend that it is more visually obvious to specify slope by pitch. So, a 100%, 45-degree slope is a 1:1 pitch slope. Or, more commonly, my roof is a 3:12 pitch: 3 inch rise in 12 inches of run.

 

[goeduck]

Both will define a slope exactly, but I contend that it is more visually obvious to specify slope by pitch. So, a 100%, 45-degree slope is a 1:1 pitch slope. Or, more commonly, my roof is a 3:12 pitch: 3 inch rise in 12 inches of run.

That works if you are a roofer, but at least it does make sense. I think degrees is easier. Grade is not something I would recall.

 

[check]

A square + B square=C square. Or put another way the sum of the squares of each side of the triangle = the square of the hypotenuse. Or so Pythagoras seemed to think. Learned that one in 8th grade math. Yeah I am old enough to have went to school when they actually taught some things.

The carpenters call it the 3-4-5 rule.

 

[dodge man]

In the civil engineering world slopes are almost always described as percent slope or run over rise, such as 3 to 1.

 

[Egon]

Yet the highway grade is expressed in %.

 

[k0ua]

Yet the highway grade is expressed in %.

And the very first thing that pops into my mind when I see one of those signs is: "how much is that in degrees".