Seat of the Pants Tilt Warning

[devlin57]

I have a Branson 3510i with R4 upsized tires, ones for the 20 frame. They are not filled yet and are set all the way out. I was wondering what max tilt the tractor is capable of. Has anyone had theirs tilted. I have forested land with a 17% grade.

 

[SHIFTY]

I have a Branson 3510i with R4 upsized tires, ones for the 20 frame. They are not filled yet and are set all the way out. I was wondering what max tilt the tractor is capable of. Has anyone had theirs tilted. I have forested land with a 17% grade.

Ive had a wheel mor two off the ground on more than one tractor, I cant tell you what grade is too much on your machine
Untill you get use to it put on the Seat belt. Try to tac straight up and down the hill. Keep the backhoe turned "up hill" to move some weight up the grade, Keep your hand on the loader control to Lower or to float the bucket down if you feel a back tire come up. Dont overload your bucket on the tricky grade . Good luck - Be careful

 

[polo1665]

I have a Branson 3510i with R4 upsized tires, ones for the 20 frame. They are not filled yet and are set all the way out. I was wondering what max tilt the tractor is capable of. Has anyone had theirs tilted. I have forested land with a 17% grade.

I always thought that 15% was the rule of thumb, but I may be wrong. What was the reason for the oversized tires? These machines seem to be pretty strable. Whatever you do, please be careful and take it slow. Don't want to see you show up in the safety forum

Mark

 

[LBrown59]

I always thought that 15% was the rule of thumb,
Mark

It is*
17% is just over the limit.
L B

 

[skidoo]

Sorry, I am not familiar with your tractor model. But, if a 17% grade is a problem, I would get something different. To me, that is almost level! A 17% grade is less than 10 degrees from level!

Now, if you are talking about a 17 deg slope (30% grade), then that is something else. Travel needs to be a bit slower.

 

[JackIL]

Guys,

There is a bit of a misconception here in failing to distinguish between "per cent grade" or "per cent slope" and the "slope ANGLE." Per cent grade is the rise divided by the horizontal run expressed as a percentage. The slope angle is measured from the horizontal to the tilted part and is usually expressed in degrees.

So the connection between the two is that:

( tangent of slope angle ) x 100 = per cent slope. A slope ANGLE of 17 degrees corresponds to a 30.5% slope. This is slightly beyond the side slope limit of typical compact tractors.
( arctangent of (percent slope/100)) = slope angle. A 17% slope corresponds to a 9.6 degree slope angle. This is well within the safe side slope limit of most compact tractors.

As another example, if the grade has 1 foot of rise in 2 feet of horizontal run, the slope angle is 26.6 degrees and the per cent grade is 50. This is well beyond the side slope capability of most compacts.

Please cut me some slack on this. I am an engineer.

JackIL

 

[polo1665]

Guys,

There is a bit of a misconception here in failing to distinguish between "per cent grade" or "per cent slope" and the "slope ANGLE." Per cent grade is the rise divided by the horizontal run expressed as a percentage. The slope angle is measured from the horizontal to the tilted part and is usually expressed in degrees.

So the connection between the two is that:

( tangent of slope angle ) x 100 = per cent slope. A slope ANGLE of 17 degrees corresponds to a 30.5% slope. This is slightly beyond the side slope limit of typical compact tractors.
( arctangent of (percent slope/100)) = slope angle. A 17% slope corresponds to a 9.6 degree slope angle. This is well within the safe side slope limit of most compact tractors.

As another example, if the grade has 1 foot of rise in 2 feet of horizontal run, the slope angle is 26.6 degrees and the per cent grade is 50. This is well beyond the side slope capability of most compacts.

Please cut me some slack on this. I am an engineer.

JackIL

I apologize, I confused 17 degree with 17 percent. The rule of thumb that I was familiar with was 17 degrees. Sometimes my typing fingers and my brain lose their connection. Thanks for the clarification.

Mark

 

[devlin57]

Using Topo USA my distance/run of my road is 550' and the rise/elevation gain is 98'. 98/550 = 17.8% Grade. So I should be about 10 degrees. My butt has a warning limit less than that. Before I start working on the grades I will be taking the BackHoe off the tractor. I think it is worsening the tipping of the tractor. I have the upsized tires because of the BH and ground clearance.

 

[polo1665]

Using Topo USA my distance/run of my road is 550' and the rise/elevation gain is 98'. 98/550 = 17.8% Grade. So I should be about 10 degrees. My butt has a warning limit less than that. Before I start working on the grades I will be taking the BackHoe off the tractor. I think it is worsening the tipping of the tractor. I have the upsized tires because of the BH and ground clearance.

My butt also has a lower tolerance for grades while mowing. I see that as a good thing. I've been in several situations that caused butt puckering and the tractor was very stable. I could only imagine the pucker factor involved with a grade that was capable of causing a roll over.

The upsized tires are an interesting idea. I have often thought that there was not much ground clearance with the subframe in place. It hasn't been a problem so far though.

Mark

 

[PILOON]

Seat of the Pants Tilt Warning

Otherwise known as:

"PUCKER METER!"