Compact Tractor Horsepower Comparisons

[AndyMA]

Just glad I got a New Holland TN series. One that the Nebraska test show to be consistently underspeced. Actually even though PTO hp is important, what is more important is how that hp is delivered. On my TN I have a 36% torque reserve that comes in when demanded and ads quite a bit more power.

Andy

[john_bud]

Originally Posted by rback33

Are you implying dishonest marketing here? Blasphemy There is no way that JD would do that test without knowing EXACTLY what it would do, and I would bet money those two were hand-picked for a purpose.

I also wonder if the fuel curves were untouched ....

After all, a quick turn of the wrist and you can unleash a torrent of extra hp. (or stop it....)

Not to say that was done, I'm just wondering.

jb

[ozzie tractor]

can anyone tell me if either manufacturer quoted PTO HP for these 2 models.

[Croomrider]

I looked it up and the JD spec'ed PTO HP at 45 while Kubota spec'ed the 5030 at 42.5 IIRC. They were never claimed to be the same in the brochures.

[JD3520]

First, I am a JD owner as you can see. Second, you buy a tractor to do a job; not test hp rating against other tractors. It either will or will not do the job. If brand x produced "upper 30's hp" (39 hp) on a dyno, I doubt I would notice the difference at the PTO. Torque yes, hp no. Is the dyno measuring wheel hp as a vehicle dyno does or is it a special dyno to measure PTO hp?

A New Holland ad did the same thing a few months ago; stacked the deck against a Kubota tractor.

I was raised to believe JD was the standard by which all others were measured. Guess Kubota is the new standard.

[Turbys_1700]

Originally Posted by john_bud

I also wonder if the fuel curves were untouched ....

After all, a quick turn of the wrist and you can unleash a torrent of extra hp. (or stop it....)

Not to say that was done, I'm just wondering.

jb

I wonder if manufacturers are told they are going to be tested and to furnish a tractor. This would give them the opportunity to "tweak" a unit to out spec their average units. If they ( the Nebraska tests) take units off the floor then this is a mute point. Does anyone know?

[Harvster]

Now, I'm new to the tractor world so feel free to correct anything I'm about to say if it is wrong.

Based on some stuff I have seen, the Nebraska tractor tests are primarily for larger ag tractors and do not pertain to the sub 40hp tractors. I also know that a JD brochure for the 2320 has the HP ratings marked with an asterisk which at the bottom of the page says "manufacturer estimate". I imagine this is true for most brands. Seems like it would be relatively easy to agree on a standard test to get some real numbers for the little tractors.

[MikePA]

Originally Posted by Turbys_1700

If they ( the Nebraska tests) take units off the floor then this is a mute point. Does anyone know?

Click Here for the Contact page of the test labs. Oh, it's moot point.

[OrangeGuy]

I operated a tractor PTO dyno many times in the past at my Dad's implement dealership. A skilled operator can easily show a 10% difference in HP on the same dyno. That operator would probably output the favored tractor with the higher HP and the contender with the lower HP. This marketing ploy is as old as the hills.

OrangeGuy

[turbo36]

Originally Posted by OrangeGuy

I operated a tractor PTO dyno many times in the past at my Dad's implement dealership. A skilled operator can easily show a 10% difference in HP on the same dyno. That operator would probably output the favored tractor with the higher HP and the contender with the lower HP. This marketing ploy is as old as the hills.

OrangeGuy

How is this done? The dyno tests thaat I have witnessed lokked pretty fool proof.