Re: Hydrostatic / Automatic info needed (buying new)
A hydrostatic transmission uses a variable displacement hydraulic pump and a hydraulic motor to vary your speeds. Speeds can be adjusted by a hand lever, or foot pedals that vary speeds, much like a car accelerator, hence the term "automatic". The engine speed stays constant, but the ground speed changes as you push either the forward or reverse pedals harder. Most of these use a belt to transfer power from the engine to the transmission and act as a clutch to disconnect the transmission from the engine.
A variable pulley drive used mechanical means to vary the pulley diameters to vary your speeds. I don't know much else about these. I don't think there are any hydraulics involved.
You need to match the abilities of the transmission to your intended use. A "weaker" one is fine for a level, small lot, where you just mow and do light duty work. If you intend to climb hills, pull a dirt plow, etc, you need a sturdier transmission, or risk ruining a smaller unit by overworking it.
Some prefer a straight geared transmission for reliability and strength, others prefer the convenience of a hydro.
"You pays your money, and takes your choice."
I can't help you with the specifics of that machine, but I'm sure others will be able to chime in.
Remember, I'm pullin' for ya! We're all in this together!
Living in The Land Of The Free - because of The Brave!
2006 Conquest, 54" deck, Vanguard engine
Last edited by Fcubman; 07-16-2010 at 10:26 AM.