[AT] Small Farm Tractors vs Garden Tractors

Tue Mar 9 07:43:22 PST 2004

Farmer,
You are absolutely right about that. I guess I am just
more used to using the drawbar horsepower since that
is what we use at our shows to put tractors into
classes for antique tractor pulling. We use the
Nebraska tests as a guide for this. The belt
horsepower is usually slightly higher than the drawbar
horsepower which is probably why the belt horsepower
is used in advertising. Anyway that still brings me
back to my original point which is that the small
garden tractors are not rated by drawbar or belt
horsepower but by SAE or BRAKE engine horsepower which
make them appear to have a whole lot of horsepower
when compared to agricultural tractors but such is not
the case. I do not have my Nebraska test book at hand
but I would think that the engine horsepower on some
of these farm tractors is probably twice what the
rated drawbar horsepower is. I think the VAC Case is
rated at about 15 drawbar horsepower and about 20
belt. I would think that the engine SAE horsepower
would be around 30. I may be a little off on some of
these figures since I don't have my book at hand. 
Tim Bivens
Glen Rose, Tex.

--- Robinson <robinson at svs.net> wrote:
> 	Actually two types of HP were measured at Nebraska.
> One is "belt or PTO" (usually listed first) and the
> other is "drawbar". The drawbar HP is seldom
> mentioned
> in tractor HP discussions or advertising. If it is
> it
> is usually mentioned as being drawbar HP. If no
> reference is made it is usually assumed to be
> Belt/PTO
> HP.
> 
> 
> 
> 
> "farmer"
> 
> My most recent list
>
mailto:budget_muzzleloading-subscribe at yahoogroups.com
> 
> Francis Robinson
> Central Indiana, USA
> robinson at svs.net
> 
> 
> 
> 
> 
> >-----Original Message-----
> >From: at-bounces at lists.antique-tractor.com
> >[mailto:at-bounces at lists.antique-tractor.com]
> >On Behalf Of Tim Bivens
> >Sent: Tuesday, March 09, 2004 8:24 AM
> >To: Antique tractor email discussion group
> >Subject: RE: [AT] Small Farm Tractors vs
> >Garden Tractors
> >
> >
> >H.L.
> >Brake horsepower and SAE horspower are both
> >horsepower
> >ratings of the engines. The Case VAC and all
> regular
> >agricultural tractors are rated by drawbar
> >horsepower.
> >This is what they use in the Nebraska Tractor Tests
> >and is the standard by which agricultural
> >tractors are
> >rated. The smaller garden tractors, mowers etc. are
> >rated by the engine horsepower which is going to be
> >quite a bit higher than the actual drawbar
> >horsepower.
> >
> >Tim Bivens
> >Glen Rose, Tex.
> >
> >--- "H. L. Staples" <hlstaples at mcloudteleco.com>
> >wrote:
> >> The I think the Case VAC is rated by brake horse
> >> power while the smaller
> >> tractor carries a SAE horse power rating. Kind of
> a
> >> horse and pony
> >> arrangement. Someone correct me if not.
> >>
> >> H. L. Staples
> >> McLoud, Oklahoma
> >> USA
> >>
> >> -------Original Message-------
> >>
> >> From: Antique tractor email discussion group
> >> Date: 03/08/04 16:28:37
> >> To: Antique tractor email discussion group
> >> Subject: RE: [AT] Small Farm Tractors vs Garden
> >> Tractors
> >>
> >> Bob,
> >> Correct me if I am wrong here but I bet that
> Wheel
> >> Horse is rated by engine horsepower instead of
> >> drawbar
> >> horsepower. Your Cub is rated at the drawbar.
> That
> >> makes a whole lot of difference. The Wheel Horse
> >> probably wouldn't even make 5 drawbar horsepower.
> I
> >> have a John Deere mower that is rated at 17
> >> horsepower
> >> but that doesn't really mean much. It sure isn't
> >> going
> >> to outpull my VAC Case at 14-15 rated drawbar
> >> horsepower.
> >>
> >> Tim Bivens
> >> Glen Rose, Tex.
> >>
> >> --- Robert Brooks <rbrooks at hvc.rr.com> wrote:
> >> >
> >> >
> >> > About 7 years ago when I first brought home
> Elmo
> >> my
> >> > 1948 Cub I had a
> >> > neighbor ask me to bring my truck over and pull
> >> his
> >> > BIL out of a
> >> > ditch. They have a long narrow gravel driveway,
> >> > with ditches on either
> >> > side, and apparently he wasn't paying attention
> >> when
> >> > off the edge of the
> >> > driveway and managed to both drivers side
> wheels
> >> of
> >> > the pickup in the mud
> >> > up to the frame rails.
> >> >
> >> > Well Joan had the Blazer so I offered to bring
> >> Elmo
> >> > over and pull him
> >> > out. His comment was no they had already tried
> to
> >> > pull the truck out with
> >> > his new 20HP Wheel Horse and if that
> >won't pull it
> >> > out, it would be a waste
> >> > of time to try with an old 8HP tractor.
> >> >
> >> > I convinced him that it was worth a try and
> that
> >> if
> >> > Elmo couldn't pull him
> >> > out then I would run the truck over when Joan
> got
> >> > home.
> >> >
> >> > At the time Elmo had calcium in the Ag tires
> and
> >> > weights on all 4 wheels.
> >> >
> >> > I hitched the chain they had used with
> >his tractor
> >> > to the draw bar and
> >> > pulled the truck out in about 1 min. I
> >didn't even
> >> > get the tires to spin.
> >> >
> >> > Seems there is HP and then there is a tractors
> >> > ability to do work.
> >> >
> >> > What Dan didn't understand and should
> >have is that
> >> > my little 8hp Cub out
> >> > weighed his Wheel Horse by at least 1500 lbs
> and
> >> > that the Cub was geared to
> >> > pull not mow lawns at 10MPH
> >> >
> >> > So there really is a big difference
> >between a farm
> >> > and lawn and garden tractor.
> >> >
> >> > Bob
> >> > rbrooks at hvc.rr.com
> >> > Elmo 1948 Cub
> >> > Rock Tavern, NY
> >> >
> >>
> >>
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