Re: Horsepower Question

Posted by Ken Macfarlane on March 07, 2007 at 08:48:54 from (156.34.142.102):

In Reply to: Re: Horsepower Question posted by Ben Shipley on March 07, 2007 at 07:42:42:

PTO hp is the net engine hp after you take your hydraulic pump
losses and internal friction losses off. It takes power in an open
centre system to keep that oil circulating. SAE has standards for
measuring the powers.

Seems to me the engine hp doesn't include many parasitic loads,
maybe not even cooling fan, can't remember.

Drawbar hp is completely different, you can have a 250 pto hp
machine with 20 drawbar hp.

Tractor pulls dragging the sleds are measuring drawbar hp, a
Ford Lightning with what 400 hp isn't gonna pull as well as say a
50 hp, 10,000 lb old piece of iron.

But if you hooked them up to a pto load you'd know the
lightning would stomp the old iron.

Replies:

• Re: Horsepower Question in-too-deep 17:16:34 03/07/07 (1)
  • Re: Horsepower Question IA Roy 20:31:04 03/07/07 (0)

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