[Gizmo2]

techie1961, don't get mad at me, but I don't think the 4by5 herd will pull a concrete roller that heavy, I think they will run out of traction even with chains. won't them high spots roll down with lots of passes. get the one out that has ur 4in1 bucket on and help smoothing the high spots down a little. when I used to roll I used my Honda 4wheeler to pull it around the wheel horse or the jd 318 with chains and wheel weights just ran out of traction to pull it up a little bit of a grade. the 4 wheel drive worked good, but people thought I was nuts rolling with the water flying , but that's what it took to get even, after being cattle pasture for years. good luck big jim

You also have to be able to stop and not be pushed along.

 

[Gizmo2]

I always figured most of the rollers you can purchase were too large in diameter. The smaller the diameter of the roller the less it needs to weigh.

 

[Gizmo2]

Ummm huh???

Where weight more or less comes into play is how wide the roller is.. If its 3' tall and 4' wide, its gonna do LESS than one same weight 3' tall and 3' wide.

Think about this on the Agri Fab rollers..

24" X 36" wide they weigh around 640 lbs

24" X 48" wide they weigh around 920 lbs..

Divide weight by width (either inches or feet). 640 will be 213.3 lbs per ft. 920 is 230 lbs per foot.

With two rollers the same length and weight but different diameters the smaller will have more pressure per square inch on the ground. No?

 

[Gizmo2]

Just the opposite. The larger diameter will have more weight therefore more ground pressure.

Don't you go proving me wrong,,,,,again.:lol:
I stated, same weight.

 

[Gizmo2]

Go big or go home! Why have a bigger roller and not fill it?

And exactly how are you weighing these rollers? :lol:

I agree, if they were somehow setup the same weight, the ground pressure would still be similar, but maybe slightly higher on the smaller diameter due to the ground conforming to the round roller. The difference I would think would be negligible.

It may surprise you.
The best roller I had for rolling crusher run on the driveway many years ago was one I made. It was about 36" long x about 18" in diameter filled with concrete.
I guess my point here is, if you are going to fill a roller with concrete, get a smaller roller.

 

[Gizmo2]

The same weight over a same area = same PSI. Simple math. Larger roller allows more weight = larger PSI. More PSI, more flattening capability.

What am I missing? :think:

This is like teaching a rock to roll over.:banghead:
Smaller roller filled with concrete. I would not want one of those larger rollers that was filled with concrete, it would be pretty darn heavy and I don't think water weighs enough to make the larger rollers practical on dry ground.

 

[Gizmo2]

You two are making my head hurt with all this math and science, I better go read a different thread.:laugh:

:lolol:
I'm so confused now that even I don't know what I'M talking about. :lol:

 

[Gizmo2]

That's a totally differing opinion than the same weight thing you posted. :mocking:

Go drink some coffee and take a nap. :laugh: Obviously you need one. :good2:

:lolol:
Are we now moving towards my English and Writing abilities on this subject?

 

[Gizmo2]

Okay boys, get along.:flag_of_truce: Whenever I have a tough time with these concepts, I like to put them to extremes.

Imagine a roller that weighs 1,000 pounds but is 1" in diameter and 48" long. Now imagine a roller that is 1,000 pounds (same weight) but is 10 FEET in diameter and 48" long (same length). They are both the same weight and length, but the contact patch with the ground would be very different. You could probably lay there and have them roll over you with the 10 foot diameter roller (probably not) but the 1 INCH roller would kill you.

The larger diameter will provide fewer PSI (Pounds/Square Inch). The contact patch might be 48" long x 12" wide giving 576 sq. in. and 1.7 PSI, whereas the smaller would be 48" long x 1/4" wide giving 12 sq. in. and 83 PSI.

For those that want to read on, if you have a cylinder and a flat surface touch, the contact patch is actually a line with no width. In reality though the ground is not a flat surface but soft and mushy. The larger diameter, like a larger tire, will produce a larger contact patch.

That's what I said. :lolol: