[AT] Horsepower question

[Larry Goss]

LOL!  Charlie, if you are like me, you come to the point that you just can't trust yourself to tell things right any more.  It just happens.  I find that I have to assume that someone is going to find errors in what I say, and not feel ashamed when it happens.  

Larry


----- Original Message -----
From: charlie hill <charliehill at embarqmail.com>
Date: Thursday, October 7, 2010 9:10
Subject: Re: [AT] Horsepower question
To: Antique tractor email discussion group <at at lists.antique-tractor.com>

> Larry, thanks for the correction.  As usual these days, my 
> memory failed me. 
> I should have checked my facts before posting but didn't have 
> time.  At 
> least it made for good discussion.  grins.
> 
> Charlie
> 
> --------------------------------------------------
> From: "Larry Goss" <rlgoss at insightbb.com>
> Sent: Wednesday, October 06, 2010 11:45 PM
> To: "Antique tractor email discussion group" 
> <at at lists.antique-tractor.com>
> Subject: [AT] Horsepower question
> 
> > It's hard to "draw rules of thumb" out of the Nebraska 
> tests.  But here 
> > goes --- Drawbar pull is generally in the range of 50% to 60% 
> of the 
> > weight of the tractor.  Some Caterpillars drop as low as 
> 45%.  Drawbar 
> > horsepower is in the range of 50% to 70% of Belt or PTO 
> horsepower. 
> > Slippage of the drive wheels varies from 2% to 15% regardless 
> of steel or 
> > rubber, but rubber generally runs a bit higher than 
> steel   I don't know 
> > that the tests were ever run with the intent of maximizing the 
> balance, 
> > traction, weight, etc, the way we do as pullers.  I'm 
> sure the slippage 
> > values would be much higher if they did.
> >
> > I found out a few months ago that a one of my wife's close 
> personal and 
> > professional friends is the daughter of one of the men who ran 
> the 
> > Nebraska tests for years.  I hoped she would be able to 
> tell me stories 
> > from Lincoln about those tests.  Unfortunately, she 
> studied music and had 
> > no interest in what her father was doing at the University.
> >
> > Larry
> >
> >
> >
> >
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> > 
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