Articulating 4X4 design

[riesedesperado6170]

you going t use cub axels and hydro's?

[Matt G.]

Originally Posted by Sam Mac

You will need a U-Joint for the drive shaft to the rear axle in line with the pivot point.

Great advice, and I think a pillow block bearing on each part of the driveshaft that's connected to one of the transmissions would be a good idea. I can see a rather long unsupported length in your latest picture...that will put some bending loads on the shaft it isn't designed for, particularly if the shaft binds, and it would probably vibrate a lot too if there is any slop between the U-joint shaft, sleeve, and input shaft.

[samckitt]

Originally Posted by riesedesperado6170

you going t use cub axels and hydro's?

Yep, I have 2 - 1711 rear axle assemblies.

[samckitt]

Originally Posted by Matt G.

Great advice, and I think a pillow block bearing on each part of the driveshaft that's connected to one of the transmissions would be a good idea. I can see a rather long unsupported length in your latest picture...that will put some bending loads on the shaft it isn't designed for, particularly if the shaft binds, and it would probably vibrate a lot too if there is any slop between the U-joint shaft, sleeve, and input shaft.

I don't think the design length of the shaft will match real life. The real one pictured uses the snowblower driveshaft.

[Sam Mac]

One other issue is keeping the shafts parallel with a U-Joint type drive line. Otherwise you will need to use a CV type joint.

[samckitt]

Why is that a problem with 2 U joints, but not with 1?

[Sam Mac]

In the drawing I did I should have explained that the black lines represent the driver and driven shafts and the red line is the drive shaft itself. Picture a U-Joint at the intersection of the red and black lines. This will explain how U-Joints work in more detail.

http://www.hurst-drivelines.com/file...roc_111606.pdf

[samckitt]

Originally Posted by Sam Mac

In the drawing I did I should have explained that the black lines represent the driver and driven shafts and the red line is the drive shaft itself. Picture a U-Joint at the intersection of the red and black lines. This will explain how U-Joints work in more detail.
/Universal_Joint_Alignment_Proc_111606.pdf[/url]

Yeah I got that.


The input into the drive line & the output have to remain parallel? So a full size articulating tractor only have one U joint in-line with the pivot point? What happens wen the front & back rock? Something has to give, another U joint would be needed.


Rock:

[Sam Mac]

My suggestion is that you find an articulating loader and take some pics of the drive line so that you can copy how they designed the drive line.

[Jumper]

A couple of good working articulaters,