Re: Horsepower Question

Posted by Bob M on March 07, 2007 at 19:05:24 from (69.205.124.61):

In Reply to: Re: Horsepower Question posted by Hugh MacKay on March 07, 2007 at 14:51:05:

You're right on Hugh!

On early PTO's (eg. the Farmall H and M) PTO power passed thru only a single pair of gears and a dog clutch. Losses between the flywheel and the PTO stub shaft were probably only 2 or 3%.

More modern tractors use all manner of multiple planetary gear sets, hydraulic clutches, band brakes, etc. While they provide soft-starting and smooth live PTO, they do so at the expense of wasting 10% or more of the flywheel HP.

Replies:

• Re: Horsepower Question Hugh MacKay 00:29:00 03/08/07 (0)

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