Hey Denny-
Remember the sketch I made up 3-4 years ago with a hydro driving an underdrive/overdrive planet set running into a gear drive tranny?!?!? I showed it to two interns from Iowa State . . . . . . .
The idea was to run a hydro in front of a gear drive, output shaft driving a sun gear, planet gears driving the input shaft of a gear drive tranny. The lower output of the hydro drove a sprocket that drove a ring gear. Without running the hydro there was normal 1:1 output, running the hydro in "reverse" would slow the tractor down, running it "foreward" ran it faster. Instead of the inefficient running against the full load of the pull, the hydro only had to run against the low-torque input from the engine. . . . . I had in mind that it could work in a longer SGT chassis with the benefit that the chagre pump could run steering and hydraulic lift, but STILL have a gear drive.
(Message edited by wcompton on June 09, 2004)
Remember the sketch I made up 3-4 years ago with a hydro driving an underdrive/overdrive planet set running into a gear drive tranny?!?!? I showed it to two interns from Iowa State . . . . . . .
The idea was to run a hydro in front of a gear drive, output shaft driving a sun gear, planet gears driving the input shaft of a gear drive tranny. The lower output of the hydro drove a sprocket that drove a ring gear. Without running the hydro there was normal 1:1 output, running the hydro in "reverse" would slow the tractor down, running it "foreward" ran it faster. Instead of the inefficient running against the full load of the pull, the hydro only had to run against the low-torque input from the engine. . . . . I had in mind that it could work in a longer SGT chassis with the benefit that the chagre pump could run steering and hydraulic lift, but STILL have a gear drive.
(Message edited by wcompton on June 09, 2004)