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Harry Ferguson Tractors Discussion Forum
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Is It Draw Bar , Or is It Din ?

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David Broad

01-03-2007 14:32:13




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Hello . A question of Horse Power . On English built TE 20's they had wht I believe was 25 - 26 hourse power to which I undersatnd was the din Hourse pewer . Din as you know is the hourse power one has in the engine before the tractor is moving . Reading the book The Proud Heritage Of AGCO which is all USA tractors . On waht is the TO twenty with the continental engine , or so I understand it is . The TO 20 lists 23 HP , while the latter TO 30 lists 29 HP . Does anybody know it on the USA built models is this like the English TE 20 the Din HP or would that be the Draw Bar Hourse Power ? If it was the din then as far as the TO 20 is concerened then that was less that the English . I might just also mentioned that acording to waht I have read the Ford models , both the 9N and 8N were only 20 HP . If that is the case then for what history I have read about these tractors , if people moaned about the 20s never having enough HP then the Fords with only 20 must have been near useless . Can anyboy shed some light ? Thanks David

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gshadel

01-04-2007 09:00:14




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 Re: Is It Draw Bar , Or is It Din ? in reply to David Broad , 01-03-2007 14:32:13  
The TE20 & TO20 both used the same engine, the Continental Z120. I imagine the rated belt/din HP might vary on each side of the pond depending on how exactly it was calculated/measured. I've seen some data where the belt HP on similar models was a couple HP higher by just increasing the RPMs. I've heard some folks say the TO's had more "get-up & go" than a N's, and that was related to the overhead valve engine in the TO having better throttle response... or low end torque... or something like that, as compared to the flathead Fords. But, that's one of those things that is up to each person to draw their own conclusion, I suppose.
I like the tilt-up hoods on the TO's, to me that is reason enough to chose a TO over a N...

George

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Paul in AZ

01-04-2007 06:57:47




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 Re: Is It Draw Bar , Or is It Din ? in reply to David Broad , 01-03-2007 14:32:13  
The 1948 Nebraska test (#392) for the TE-20/TO-20 resulted in 25 rated belt HP and 20 rated drawbar HP.

In 1948 the Nebraska test (#393), the Ford 8N was rated at 25/21.



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Leroy

01-03-2007 17:58:47




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 Re: Is It Draw Bar , Or is It Din ? in reply to David Broad , 01-03-2007 14:32:13  
The 9N-2N Ford tractors were rated at 23 Belt HP and supposed to pull 2-14" plows, That was a bit much in our ground and I have the orignal 2-12" plow Dad bought with my 2N in may of 44, pulled a 42" combine and corn picker on PTO for few years as well as doing all the heavy work like plowing and disking. The earlier Ford 8N was about 25 HP with the last 8N at 28HP or 1 less than the Ferguson TO 30 that I had and pulled a 5 foot combine on pto with that. I no longer have the TO30 (Would like to have it back) but still have that 44 2N and also a 41 9N. This is in Ohio in the USA.

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Leroy

01-03-2007 18:05:01




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 Re: Is It Draw Bar , Or is It Din ? in reply to Leroy, 01-03-2007 17:58:47  
A lot of people confuse the maximum belt Horse Power with rated belt horse power that is 85% of maximum, then there is drawbar horsepower that is considerable less than belt horsehpower and there is maximum and rated in that catagorie and rated drawbar is 75% of max drawbar power. Only when do you get to the newer compacts or garden tractors do you find them rated with engine horsepower.



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Gerald J.

01-03-2007 15:18:41




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 Re: Is It Draw Bar , Or is It Din ? in reply to David Broad , 01-03-2007 14:32:13  
American tractors are rated by Nebraska Tractor Tests. They can be found on line, probably a google search on that phrase will find them. They rate tractors on drawbar pull and pulley or PTO horsepower, never on the bare engine horsepower rating. They have been rating tractors since about 1920.

Gerald J.



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