Re: PTO h.p. vs. DRAWBAR h.p.?

Posted by Ken Macfarlane on February 16, 2005 at 06:11:34 from (142.166.9.50):

In Reply to: Re: PTO h.p. vs. DRAWBAR h.p.? posted by paul on February 15, 2005 at 16:55:39:

I'm surprised how many posters got the draw bar hp wrong.

PTO Hp - power delivered out the PTO simple huh?

Drawbar HP - Power delivered out the drawbar, simple too eh?

Drawbar hp is all about drawbar pull, how many pounds you can move and how fast it goes. The shuttle transporter would have huge drawbar pull but it doesn't move fast so the drawbar power is low.

A lawnmower doesn't have enough weight to get any drawbar pull so it can't make much drawbar power.

A high PTO hp/ Low drawbar hp tractor can be ballasted up to increase the drawbar hp.

Re the comments on new cars with high hp numbers and such, if you drive an auto with 4 or 5 speeds, it doesn't matter what the torque is, you're driving the engines hp peak.

If you have a manual or a 3 spd auto, you can feel the flat torque curve of an older engine.

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