Re: Whats a ground speed P.T.O

Posted by john in la on December 28, 2004 at 07:51:04 from (66.157.26.225):

In Reply to: Re: Whats a ground speed P.T.O posted by Dean on December 28, 2004 at 06:58:58:

Well let me reply by saying this and you can try to correct any misunderstandings I may have.

There are 3 types of PTO.
Trans drive; Live; and Independent.

Trans drive; This pto is run off the back of the transmission so the gear you select determines the speed of the PTO. First gear would be a slower PTO speed than Fourth gear at the same RPM. This is why it is called a ground speed PTO. The higher the gear the faster the tractor goes and the faster the PTO goes.

Live; This pto is run off the clutch. The pto speed is not affected by the ground speed at all; it is affected by the engine rpm. While the trans clutch and the pto clutch are worked by the same pedal causing you to stop the tractor movement to affect the pto they run off different gears in the trans. The proof meter on a x6x shows this by saying a pto speed of 545 rpm can be had at 1700 rpm where as the same rpm will produce a different ground speed depending on what gear you have the trans in.

Independent; This pto is run separate of the drive line clutch. It has its own control to disengage the power to the pto allowing you to start and stop the pto with out messing with the ground drive clutch. This pto can be rpm speed driven with some offering a ground drive speed also.

So to sum it up ..........

A 841 would have a pto speed that runs only in relation to ground drive. (Trans drive)

A 861 would have a pto speed that runs only in relation to engine speed no matter what the gear. (Live) (this is why some call this a independent pto because it runs totally independent to the ground speed gears)

A 871 would have a true independent pto.
And a 881 is a true independent pto that can also be changed over from rpm speed to ground speed.

So to answer the original question I would say….
1) Ground speed pto is a pto that is affected and changes by the speed of the tractor.
2) Independent pto can have rpm speed or a ground drive speed set up or both.

Follow Ups:

• Re: Whats a ground speed P.T.O Bobrh 08:12:24 12/28/04 (7)
  • Re: Whats a ground speed P.T.O Bobrh 08:37:40 12/28/04 (6)
    • Re: Whats a ground speed P.T.O paul 13:42:25 12/28/04 (0)
    • Re: Whats a ground speed P.T.O Bob 09:41:58 12/28/04 (4)
      • Re: Whats a ground speed P.T.O Bob 09:56:59 12/28/04 (3)
        • Re: Whats a ground speed P.T.O Bobrh 10:00:33 12/28/04 (2)
          • Re: Whats a ground speed P.T.O john in la 14:34:13 12/28/04 (1)
            • Re: Whats a ground speed P.T.O paul 15:45:09 12/28/04 (0)

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