Re: which is better for tractor transmissions, hydrostatic or gear drive

Posted by Larry on March 06, 2003 at 09:37:26 from (208.17.195.2):

In Reply to: which is better for tractor transmissions, hydrostatic or gear drive posted by KURT (mi) on March 06, 2003 at 03:30:41:

All the tractor companies and some car companies are coming out with CVT's (continuously variable trans) now too. They are a hydrostat in parallel with a standard trans. You can stop one and put all the torque through the other side or use a combination of both. Gives infinite speed over much greater range than hydro alone, plus they can provide a gear ratio to let the tractor run near peak torque engine speed (better economy) no matter what load ... field speed changes to fit. Ahhh, the benefits and complexity of computer control. Personally, I always liked the way the 560's diesel would groan as you try restart at aorund 1000 rpm with a sunk plow! Hydrostat whine just doesn't give you the same rush.

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