Buying Advice Done with hydrostatics

[Sawyer Rob]

I "think" those IH B-275's were made by Mahindra...

I put quite a few hours on one when I was a kid...

SR

 

[4570Man]

And like a fool I bought a 30 year old JD 855 with hydrostatic transmission

I will change the oil in it and cross my fingers. 18 quarts shouldn’t bankrupt me. Now I need to read hundreds of pages about what oil to get.....got to love having a tractor.

That looks very similar to my b7200. It’s a whole different class of machine than the garbage lawn mowers. It’s by far the toughest and most fail proof machine I own.

 

[bcp]

I wonder about the the possibility of the systems used in small diesel-hydraulic locomotives common in Europe being applied to larger tractors. Probably too complicated for no real advantage. But it shows hydraulic propulsion can be used on things larger than compact tractors.

Diesel-hydraulic locomotive - Wikipedia

Bruce

 

[ruffdog]

"But it shows hydraulic propulsion can be used on things larger than compact tractors."

Like end loaders?

 

[bcp]

I don't know about end loaders, but a common complaint here seems to be someone wanting a larger tractor but they can't get HST.

Bruce

 

[4570Man]

I wonder if it’s more because big tractors are almost always used for field work which gears are better at any less because it’s not possible.

 

[daugen]

I wonder if it’s more because big tractors are almost always used for field work which gears are better at any less because it’s not possible.

which is why the big tractors are either quad range gears or IVT/CVT. Everyone wants the perfect mph for the job, three speed hydro won't do that in row crop farming very efficiently I'm sure.

I wouldn't even consider a SCUT or CUT without hydrostatic. With two hydro tractors and two gears, I know which ones are easier to drive. I couldn't care less if the hydro uses more fuel, not with my non pro usage. I would rather use my foot than a reverser and keep my hands on the wheel when needed.

 

[fitterski]

I wonder if it’s more because big tractors are almost always used for field work which gears are better at any less because it’s not possible.

Gears put more torque to the ground for one thing, for another all hyd. pumps/motors lose efficiency over time regardless of how expensive they are. There's a comfort factor too, so it seems that some people prefer HST for ease of use, like some prefer automatics in their trucks. Me I want gears in everything and around here at least it's not the minority that I'm a part of.

 

[4570Man]

Gears put more torque to the ground for one thing, for another all hyd. pumps/motors lose efficiency over time regardless of how expensive they are. There's a comfort factor too, so it seems that some people prefer HST for ease of use, like some prefer automatics in their trucks. Me I want gears in everything and around here at least it's not the minority that I'm a part of.

The little tractors run out of traction before power. An identical weight, engine power, and tire tractor will have the same max draw bar pull. The geared will pull the same load a little faster.

 

[/pine]

The little tractors run out of traction before power. An identical weight, engine power, and tire tractor will have the same max draw bar pull. The geared will pull the same load a little faster.

and or at less RPM's