Dirt Moving An understanding on the age old debate of geared/hydro

[mopardude318]

I would have went with an HST, but it is not offered in my size of tractor. power shuttle only. Maybe one day I'll get an M62 TLB!

 

[LD1]

Yes, I am aware of that but I was responding to your earlier statement of "If your tractor can spin the tires on the hill the transmission is putting all the torque it can down". In that statement you also ignore the rest of the drivetrain that is required in order to spin the wheels. We both should have been referring to the drivetrain.

I agree with you that there is no fancy torque biasing or limited slip on my HST. I came to that conclusion after carefully reviewing schematics of my geared drive train and schematics of my HST drive train. They do look very similar when one looks beyond the HST. I thought there might be some subtle differences that might explain my loss of traction but so far that theory looks unlikely.

So the reason for my traction loss, probably comes down to tires, tire pressure, weight distribution or some other reason and not the HST.

Drivetrain has no effect on traction in the context we are discussing.

In you claim that your 15 HP tractor can out climb the 23 HP.....tire condition, tire type, weight, weight distribution, tire size, etc is what you should be looking at. Those effect traction. Drivetrain...no

 

[TomSeller]

I'm going to add a bit here in that there is essentially no difference between an HST and a gear transmission power train after the transmission. The only difference is how the power gets transmitted through the transmission. After that they are essentially equal. Ie crown and pinion, diff lock, rear axle, gear train to the front wheels, and the front axle.

You got it.