Re: Re: How does draft control work?

Posted by Larry 8N75381 on June 02, 2002 at 17:23:15 from (63.159.26.90):

In Reply to: Re: How does draft control work? posted by KURT on May 31, 2002 at 16:17:05:

Kurt,

You might find it intresting to read about how Harry Ferguson designed the first draft control system. Remember hydraulic systems were in their infancy back then - 1938. One of the problems Ferguson had was the foaming of oil since he did not have the "fancy" oils we have now. So he made the pump so it ran submerged in the oil of the differential. Then to control the lift, which was just power up and gravity down, he put the valve on the pump inlet. There is more detail in some of the books on the design of the Ford N-series tractors that had the Ferguson System in them.

I'm giving you what I remember from reading them. AND you should also know I have the CRS thing. :-)

Regards,
Larry

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