Nebraska tests in the 70's
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Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=168908
Printed Date: 07 Apr 2026 at 1:28pm
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Topic: Nebraska tests in the 70's
Posted By: tbran
Subject: Nebraska tests in the 70's
Date Posted: 07 Mar 2020 at 12:05am
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There was a post on Neb test of tractors; reminded me of a conversation with Carl Stephens - hope that is correct spelling - the tractor marketing mgr who drove the 7080 over the trestle pulling the rail cars. He said AC rented and bought Deere higher hp tractors and they never performed as well as the neb test against our AC's in the field as to pulling and economy etc. He did some research, bought some beers, and came up with some interesting info. Seems Deere noted the tractor to be sent for testing - all the bearings, clutches were set up loose, hyd pressures were at the lowest setting, even the front wheel brgs were loose. The engine was a pick of the litter that was extensively dyno broke in and having a fine tune of the timing and fuel curve set before being sent to be put on the tractor. AC just picked a tractor, made sure there were no leaks, ran it a few laps around the bull pen , dyno checked it and sent it on the way. Rumor was pity the customer who got a green 'test tractor' as it was 'worn out' to speak. AC almost always fared well at the tests as to finishing near the top of competition. Many other brands did not, we used to read the tester's comments, some had minor or major breakdowns at the lab. Occasionally the unit had to be repaired and replaced or returned. Just a few memories of the distant past... and to take the results in a lighter frame of mind …. if you know what I mean. To those in the know, enlighten me on the Nebraska law fate of not being able to sell a tractor in Neb w/o being tested at Neb test first …. ------------- When told "it's not the money,it's the principle", remember, it's always the money.. |
Replies:
Posted By: Gary Burnett
Date Posted: 07 Mar 2020 at 5:23am
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Good point I've thought that it was a big flaw in the Neb tests letting the manufacturer pick the tractor to be tested.Also the tests with the tractors grossly over weighted produced results that wouldn't be anything like what the average tractor would use them. The IIHS that crash tests vehicles near me just buys the model they want off a dealer's lot to get a typical vehicle to test.
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Posted By: DrAllis
Date Posted: 07 Mar 2020 at 6:16am
| The grossly overweighted thing was because of pulling on concrete which has no traction compared to firm soil. It was the same surface for everyone. Also the drawbar chain was in a straight line not giving any downward tug against the drawbar. Interesting news on Deere's test tractor prep. Kind of equals the story of their field combines at the Farm Progress show having plastic/composite cylinder bars to minimize damage in very wet corn harvesting. They didn't last very long but that was OK fine. |
Posted By: Gary Burnett
Date Posted: 07 Mar 2020 at 7:23am
My point not under real life conditions,no farmer farms on concrete.
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DrAllis wrote:Posted By: DrAllis
Date Posted: 07 Mar 2020 at 7:24am
| Well then, how would you have done it so hundreds of tractors could have been tested with fair and consistent results?? The drawbar testing was measuring the efficiency of the driveline. Traction in the field was related to tire size (square inches on the ground) weight on the drive tires, drawbar height and length, etc, etc. |
Posted By: Gary Burnett
Date Posted: 07 Mar 2020 at 8:52am
I wouldn't have accepted doctored up tractors from the manufacturer for one thing.Also would have used the number of weights and max weight the manufacturer said was to be used for farm use.Some of the old warranties I've seen state that over weighting the tractor would void the warranty.HP from a dyno and to just test the driveline strength it could be done on about any surface including concrete to see if it broke but as for me so called pulling power on concrete instead of soil was an interesting figure but not accurately giving real field condition results.
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Posted By: Lonn
Date Posted: 07 Mar 2020 at 10:36am
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You can't get consistantly fair comparisons on dirt. Too many variables from one day to the next vs concrete. ------------- -- --- .... .- -- -- .- -.. / .-- .- ... / .- / -- ..- .-. -.. . .-. .. -. --. / -.-. .... .. .-.. -.. / .-. .- .--. .. ... - Wink I am a Russian Bot |
Posted By: Lonn
Date Posted: 07 Mar 2020 at 10:40am
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Wendel's book has info as to why they made the switch to concrete. Rain for one thing. How long do you think it would take to dry out a dirt track vs concrete? ------------- -- --- .... .- -- -- .- -.. / .-- .- ... / .- / -- ..- .-. -.. . .-. .. -. --. / -.-. .... .. .-.. -.. / .-. .- .--. .. ... - Wink I am a Russian Bot |
Posted By: Gary Burnett
Date Posted: 07 Mar 2020 at 11:29am
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I understand and that's fine I guess something is better than nothing.The thing is I see the pictures of tractors being tested with 10 or 12 sets of wheel weights on them.What do you think would have happened if Farmer Jones had bought a D17 put on 10 sets of wheel weights,hooked to his King Kong plow went out and tore the differential out.Called the dealer for a warranty claim? |
Posted By: HaroldOmaha
Date Posted: 07 Mar 2020 at 11:40am
| One time we visited the test lab they told us that some mfg. cheated on there tests, but they wouldn't say who. sometimes they caught them, sometimes they didn't. |
Posted By: Lonn
Date Posted: 07 Mar 2020 at 4:57pm
I do like how PAMI in Canada tested combines where they had a reference combine that was used to measure against all the models they tested where both combines ran in the same field at the same time. For a while PAMI used a 7700 as the reference combine and each combine tested against that 7700 directly in several different crops and would be a certain percentage above or below the performance of the 7700 for capacity and grain loss among other things and a record was kept of breakdowns and remedies or suggested remedies that PAMI felt was needed to improve any given combine. I think it was a really good way to check performance of the machines. I think PAMI did the same for planters for a while too. ------------- -- --- .... .- -- -- .- -.. / .-- .- ... / .- / -- ..- .-. -.. . .-. .. -. --. / -.-. .... .. .-.. -.. / .-. .- .--. .. ... - Wink I am a Russian Bot |
Posted By: DiyDave
Date Posted: 07 Mar 2020 at 9:07pm
No matter what the test, deere always finds a way to cheat... ------------- Source: Babylon Bee. Sponsored by BRAWNDO, its got what you need! |