comparing my past/present tractors + a hp question

This AM I was comparing some current and former family tractor's Nebraska test results using Tractordata.com. I understand the meanings of the different ratings, how the tests were conducted and their relationship to actual use.

Allis B pto 22, drawbar 20
Farmall Cub pto 10, drawbar 10
Farmall Super A pto 16, drawbar 13
Ford 8N pto 23, drawbar 22
Ford 601 engine 48, pto 32, drawbar 30
JD 850 pto 22, drawbar 18
JD 755 engine 20, pto 15

I'm wondering:
Was the JD 755 not tested? If not, why? It's newer and smaller and perhaps not considered a Farm Tractor? As the only hydro and the only 4X4 in the bunch I'm curious how it's test results do or would compare.

Now for a few impressions. I'm surprised the Super A tested so close to the Cub. I found the Super A with added 3pt to be a wonderful, strong, competent tractor every bit as good as the 8N so many people around here love. I'm truly sorry I sold it. Of the lot nothing beat the 601 in brute power. IMHO beyond cuteness and cultivating the cub was worthless and a PITA to switch equipment--heck the Super A was a better cultivator too. The 850 has been a nice refined field tractor. My biggest complaint is the 3pt is so, shall I say crowded, it's hard to hook up. Sadly I haven't had enough time with the B as it's in pieces. I'm looking forward to spending some time with the 755 which clearly has a great advantage in maneuverability, direction, and speed control to anything I've used to date. The 3pt is also well exposed and looks like it might be easy to connect.
 
(quoted from post at 09:22:55 12/20/14) This AM I was comparing some current and former family tractor's Nebraska test results using Tractordata.com. I understand the meanings of the different ratings, how the tests were conducted and their relationship to actual use.

Allis B pto 22, drawbar 20
Farmall Cub pto 10, drawbar 10
Farmall Super A pto 16, drawbar 13
Ford 8N pto 23, drawbar 22
Ford 601 engine 48, pto 32, drawbar 30
JD 850 pto 22, drawbar 18
JD 755 engine 20, pto 15

I'm wondering:
Was the JD 755 not tested? If not, why? It's newer and smaller and perhaps not considered a Farm Tractor? As the only hydro and the only 4X4 in the bunch I'm curious how it's test results do or would compare.

Now for a few impressions. I'm surprised the Super A tested so close to the Cub. I found the Super A with added 3pt to be a wonderful, strong, competent tractor every bit as good as the 8N so many people around here love. I'm truly sorry I sold it. Of the lot nothing beat the 601 in brute power. IMHO beyond cuteness and cultivating the cub was worthless and a PITA to switch equipment--heck the Super A was a better cultivator too. The 850 has been a nice refined field tractor. My biggest complaint is the 3pt is so, shall I say crowded, it's hard to hook up. Sadly I haven't had enough time with the B as it's in pieces. I'm looking forward to spending some time with the 755 which clearly has a great advantage in maneuverability, direction, and speed control to anything I've used to date. The 3pt is also well exposed and looks like it might be easy to connect.

One thing that most of the pullers can tell you is that you have to have weight. That's my biggest complaint about the N tractors. Just to light.

SA 2400 to 3450

8N 2410 to 4043

9N 2140 to 3375

2n "?" to 3070

The SA had the weight advantage on both the 2 and 9N'. That's why it's a better tractor. I only own 8N's. Would like to up grade them and will sometime in the future. Without adding fluid or weights wheel slippage is a problem.

Rick
 
Back in the 50's, my Dad had a John Deere M and my
Grandpa had a Ferguson 20. They hooked them
drawbar to drawbar with a chain and the M pulled
the 20 backwards. We were all surprised.
 
My understanding is when conducting the Nebraska tests they ballast the tractors as required to obtain their maximum results--they are not allowed to make engine alterations or remove/disconnect things like alternators and hydraulic pumps to improve numbers. They test all tractors in as close to and identical environment as they can. The Super A falls quite a bit below the 8N in those tests.

Still IMHO I'd rather have a Super A over an 8N. But I admit that it still depends on the major task it is to be used for but I feel it's often under appreciated when compared to the 8N. Downsides: offset pto, tall under trees, less stable on a hillside, less lift capacity. Upsides: great operators platform, good visibility and clearance, live hydraulics, independent hydraulics for front and rear applications (push blade on front, scoop on rear at the same time), hydraulic down-pressure (great using the pulverizer and with a back blade there is no floating up when going over bumps), I found the hydraulics had finer height adjustment control, and as I recall the engine access was much better too.
 
They changed the Nebraska test law a few years ago and tractors under a certain horsepower no longer need to be tested at Nebraska to be sold in the state. (around 50 horse but I don't have the exact figure in my head) On he other hand I've been told there are some makes of tractors that their larger models are not sold here as they have never been tested. Testing is still done on smaller models but it is voluntary. Also Nebraska is the only OCED recognized test station in the US and they have reciprocity agreements with others overseas so those tractors may be tested there.
Test lab
 
Depends on weight and height of hitch, like the video of the old steam traction engine pulling a modern 4 wheel drive John Deere backwards.
 

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