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Old 11-15-2009, 12:49 PM   #1 (permalink)
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Default Combine Classes

Can anyone tell me the categories used to determine classes of a combine?
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Old 11-16-2009, 01:58 AM   #2 (permalink)
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Default Re: Combine Classes

Rather simple, really. For now, it's only grain tank capacity and engine horsepower.

Personally, I think manufacturers need to get on the ball with other standards, such as cylinder width, rotor size, sieve area, walker area [where applicable] and anything else they may want to add. The former PAMI was to combines what the Nebraska Tests were to tractors. More of the PAMI standards could be applied; otherwise, we could throw a 475 Hp engine and a 400 bu bin on a John Deere 7700 and make a Class XI out of it.
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Old 11-16-2009, 04:23 PM   #3 (permalink)
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Default Re: Combine Classes

Classes are only related to engine horsepower

CLASS 5 <200Kw <268Hp
CLASS 6 200-240Kw 268-322Hp
CLASS 7 240-280Kw 322-375Hp
CLASS 8 280-320Kw 375-429Hp
CLASS 9 320-360Kw 429-483Hp
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Old 11-16-2009, 04:54 PM   #4 (permalink)
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Default Re: Combine Classes

3colors, I had understood all these years, that grain tank cap was included, too.

I agree with Worldchamp, in that those stats [even without the grain tank measures] can be somewhat confusing. In his case, the R75 and R66 [regardless of year] would both be Class IX.

A CH I know from North Dakota, converted a standard M-F 860 to Class X and that was 20 years ago.
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Old 11-16-2009, 05:57 PM   #5 (permalink)
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Default Re: Combine Classes

r 75 was never 300 hp...........................................
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Old 11-16-2009, 06:01 PM   #6 (permalink)
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Default Re: Combine Classes

2006 was the first year of the sisu and was 350 hp in the r 75
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Old 11-17-2009, 01:58 AM   #7 (permalink)
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Default Re: Combine Classes

Thanks for your reply but it doesn't make sense to me. I understand and believe what you say but a 06 r-75 has 330 bushel bin and 300 hp and a class 7, a 09 r-66 has a 300 bushel bin tank and 300 hp and is a class 6. Doesn't all figure.
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