GirlWhoWantsTractor
Platinum Member
- Joined
- Apr 25, 2015
- Messages
- 948
- Location
- The Mountains of Virginia
- Tractor
- 2018 Mahindra 26XL HST, Husqv GT48XLsi & YTH48LS
I can answer that one. I've had both types of transmission - in fact I have both types now (again).
HST is much nicer than a shuttle for hilly country, icy slopes, as well as much better for using the loader. That's because with the HST, when you take your foot off the treadle all tractor driving force stops. Any momentum that the tractor has simply disappears.So reducing the treadle acts like it puts on the brakes as you reduce the drive. Completely off and no drive at all, and it doesn't even want to roll. My Kubota HST also automatically adjusts the throttle to compensate for any motion of the treadle. The throttle can be adjusted separately, but you don't have to.
With a shuttle-shift, the throttle is separate. But more importantly, with a shuttle you are always in gear unless you deliberately shift into neutral. So as you slow down it doesn't want to stop. You are still in gear even if you reduce the throttle. So to come to a complete stop or just inch forward with a shuttle you need to either shift into neutral, tap or stand on the brakes, or shuttle into reverse and go backwards.
Now for use on long straight sections like a huge lawn or a farm field the shuttle is nicer because you can just set the throttle, select a gear, relax, and just continue on without any foot or hand control needed.
rScotty
Yeah that's a great way to explain it. The HST is completely intuitive to me, even without big-tractor experience, and the only option in our tight woody areas. (BTW, I'd totally be comparing Kubota's too if we had a dealer within 2 hours....)
Everyone around here has pretty much our terrain; even the "farmers" have big hills. So there is no big-scale farming here, like what you said, no long flat fields. Just a few happy black angus grazing on lush green hills, and folks raising alpacas and arugula and other weird, small-scale, specialty type stuff. Probably why the shuttles weren't as popular?