Wolfy
Veteran Member
I do believe in the near future, compact tractors will only offer HST transmissions. Most pickups are there now.
A HST is about 15% less efficient than gears. When you remove your foot from the go pedal, the drag from the HST will act like brakes. Really I use an emergency brake & turning brakes on my Kubota L3200 HST but vary rarely actual stopping brakes. I like that auto stop function, some don't.
A HST means you can push your tractor to the max easily under varying conditions. Hit thick brush when mowing? Ease up a bit if it starts lugging. Big drift when snow blowing? Ease off & keep the RPMs up. Hard ground when tilling, no problem.
The utility factor makes it a superior transmission for a utility tractor. The 15% performance penalty makes it not ideal for big ag tractors that spend weeks plowing or what not at the same speed.
I won't ever replace my HST with anything else. It was way worth the extra $1000.
From what I hear the HST is as reliable as an old manual gear & probably better than some of the power shifts.
Fendt makes very efficient hst transmissions and in europe its considered to be one of the most fuel efficient tractors. Technology | Fendt 500 Vario | Tractors - AGCO GmbH