5030
Epic Contributor
- Joined
- Feb 21, 2003
- Messages
- 24,595
- Location
- SE Michigan in the middle of nowhere
- Tractor
- Kubota M9000 HDCC3 M9000 HDC
In the compact tractor arena, I suspect a hydraulic shuttle isn't in the cards, a hydraulic shuttle and multi=speed / range gearboxes are for the bigger units (like I run) but while a HST unit might work for ocasional ground engaging work on a limited scale, they really aren't suited for heavy application. Years ago IH offered one and it was problematic. The issue is getting rid of the residual heat generated by what amounts to a torque converter in the driveline.
Far as a sore left leg goes, the ONLY TIME I use the clutch is to start the tractor and select a gear or when changing ranges. Up shifting and down shifting in a particular range is simply a matter of moving the shuttle lever to the center position (which releases pressure on the clutch packs) and changing gears and then engaging the shuttle lever again. Not familiar with JD, but Kubota uses a sensing valve arrangement that senses load and modulates the pack pressure accordingly so gear changes as well as directional changes are seamless and smooth.
I'd never go back to a gear drive, dry clutch unit again. My last big tractor before the Kubota's was a V8 Massey with 32 forward and 16 reverse gears and I did get a tired left leg and foot, even with the torque amplifier which basically splits the gears for more drawbar power. If the Massey had the hydraulic shuttle, I'd still have it, even though it drank diesel like a drunken sailor..........
When you farm, like I do, you want the least complex, easiest to service drivetrain that is the most user friendly and the HS is just that.
Far as a sore left leg goes, the ONLY TIME I use the clutch is to start the tractor and select a gear or when changing ranges. Up shifting and down shifting in a particular range is simply a matter of moving the shuttle lever to the center position (which releases pressure on the clutch packs) and changing gears and then engaging the shuttle lever again. Not familiar with JD, but Kubota uses a sensing valve arrangement that senses load and modulates the pack pressure accordingly so gear changes as well as directional changes are seamless and smooth.
I'd never go back to a gear drive, dry clutch unit again. My last big tractor before the Kubota's was a V8 Massey with 32 forward and 16 reverse gears and I did get a tired left leg and foot, even with the torque amplifier which basically splits the gears for more drawbar power. If the Massey had the hydraulic shuttle, I'd still have it, even though it drank diesel like a drunken sailor..........
When you farm, like I do, you want the least complex, easiest to service drivetrain that is the most user friendly and the HS is just that.