MF 35 WHAT SPEED TO USE?

Consider safety first. Don't run fast when working near ditches, or next to something you don't want to run into.

Next I'd say use common sense. When you're doing rough work a faster gear would be best. But if you're trying to get something really level, slow down and use a lower gear.

I don't run the throttle any faster than I need to in order to have enough power. Running the engine wide open just wastes fuel and wears out the engine.

Part of the answer is torque. It seems that the torque curve is setup so that you get more torque below PTO rpm so that when plowing, when the pulling gets tough, the engine lugs, rpm's drop, but torque increases and the tractor can tug harder and get you out of the tough spot.

On using the blade the same applies unless you are spreading driveway gravel which is designers choice; not really a load on this tractor.

Rule on rpm's to me is this. If you load up your engine, regardless of your rpm's where you drop 300 under load, you are overloaded.

Example. I am going to plow. I rev up to pto rpm's rolling forward and drop the plow... if the rpm's drop by 300 or more from where they were with the plow up, I need to drop a gear or pull the plow up and make a second pass..... after the soil has crusted over....like the next day or so; not overplow immediately (soil will unnecessarily compress).

Mark