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post #16 of 23 Old 10-09-2008, 03:59 PM
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Re: Ford Tractor Specifications 1939-1962

If I read this right the Nebraska tractor test says the drawbar power should be 16.31 hp. I got tons of stuff from the Universatiy of Nebraska on the 9N if you want it.
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post #17 of 23 Old 10-10-2008, 05:14 AM
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Re: Ford Tractor Specifications 1939-1962

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If I read this right the Nebraska tractor test says the drawbar power should be 16.31 hp. I got tons of stuff from the Universatiy of Nebraska on the 9N if you want it.
Dan, which tractor is the data for?? 9N-2N-8N-NAA ???

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post #18 of 23 Old 10-10-2008, 09:22 PM
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Re: Ford Tractor Specifications 1939-1962

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Originally Posted by Ken N Tx View Post
Dan, which tractor is the data for?? 9N-2N-8N-NAA ???
the tractor tested was 9N12840 the test dates are April 9 to 18, 1940.
They have the tractor model listed as "Ford-Ferguson System 9N"

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post #19 of 23 Old 12-02-2008, 08:37 PM
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Re: Ford Tractor Specifications 1939-1962

Way cool! Thanks for the info.
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post #20 of 23 Old 01-13-2009, 08:32 PM
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Re: Ford Tractor Specifications 1939-1962

That's really handy, especially the engine/trans combos in the NAA series. That's where the line up gets complicated. The only discrepancy I noticed was the engine size and PTO rating. According to the Ford 9N/2N Service manual, the engine size is 119.7 cubic inches. The horsepower rating was23.87 (maximum belt) and the "rated belt" is 20.29 (85% of maximum). The maximum drawbar rating was 16.90 (without the 3 point hitch) and the rated drawbar hp was 12.68 (75% of maximum).

The 8N should also be 119.7 cubes, since it used the same bore and stroke, but it used a higher compression ratio for slightly higher hp.

The manual also lists the PTO as "509 rpm at an engine speed of 1400 rpm" and a shaft size of one and one eighth inches.

Anyway, thanks for putting all that together. The tractor lineup was simple until Ford discovered that one size really didn't fit everyone after all.
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post #21 of 23 Old 01-13-2009, 08:44 PM
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Re: Ford Tractor Specifications 1939-1962

Great work Steve. Congratulations to a fellow Texan.

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post #22 of 23 Old 04-02-2009, 11:44 AM
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Re: Ford Tractor Specifications 1939-1962

Being new to the forum, I want to thank you Steve for the information. Great information! Now I have to check the serial number to see if my 1955 Ford is a 630 or 640.
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post #23 of 23 Old 04-18-2010, 11:17 PM
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Re: Ford Tractor Specifications 1939-1962

awesome info. i've had my 9n for a little over a year and it's great. i think i might have to adjust the clutch though
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