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dfwallis 
Orange Level
Joined: 09 Mar 2023
Location: DFW
Points: 627
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 Topic: AC Letter Series Comparison
Posted: 25 Nov 2023 at 2:18pm |
I was bored today so I put together a little comparison spreadsheet...
Mostly from tractordata.com. I know there are errors and measurement method issues for some items. I just find it messy to try to compare with the tractordata.com data format.
Don't really know what the ballasted weight means. Is that the max you should reasonably be able to achieve or max used for a particular pulling test?
Edited by dfwallis - 25 Nov 2023 at 2:32pm
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AC720Man
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Joined: 10 Oct 2016
Location: Shenandoah, Va
Points: 4910
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Posted: 25 Nov 2023 at 2:55pm |
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My guess would be weight achieved once fluid was added to the rear tires? I’m sure there is a formula for tire and rim size for the amount of gallons each tire would hold. I’m not sure what that is though? Did they add fluid at the Nebraska proving grounds?
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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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dfwallis
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Joined: 09 Mar 2023
Location: DFW
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Posted: 25 Nov 2023 at 7:33pm |
 AC720Man wrote:
My guess would be weight achieved once fluid was added to the rear tires? I’m sure there is a formula for tire and rim size for the amount of gallons each tire would hold. I’m not sure what that is though? Did they add fluid at the Nebraska proving grounds? |
I don't think it can only refer to tire ballast. For the CA, my 13.6x24 tires would hold a max of 400lbs each at 75% fill. That would only get it up to 3635lbs. And I doubt any of the Nebraska tests had 13.6 tires installed.
Edited by dfwallis - 25 Nov 2023 at 7:43pm
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steve(ill)
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Joined: 11 Sep 2009
Location: illinois
Points: 81104
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Posted: 25 Nov 2023 at 8:22pm |
ballast weight is normally the weight of a machine plus additional weights added so that you can get the max draw bar horsepower at a given ground speed.... probably determined to get the most WORK out of the machine...with a fixed amount of wheel SLIP... Normally that is about 130 pound per HP for a tractor...
so a 20 HP at the drawbar should be loaded to weigh 2600 pounds.... and a 40 HP tractor should be loaded to weigh twice that or 5200 pounds....... but that does not seem to jive with the above chart....
also this should be at a GIVEN ground speed... that could be a fixed 3 MPH, or it could be what ever ground speed you can get in 1st gear at the max drawbar HP point on a curve.
Edited by steve(ill) - 25 Nov 2023 at 8:23pm
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Like them all, but love the "B"s.
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jvin248
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Joined: 17 Jan 2022
Location: Detroit
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Posted: 02 Dec 2023 at 6:58pm |
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How accurate are the plow bottoms?
Bottom cut width and soil type, what are the typical standards?
I have a 52 WD, mostly clay, and curious what plows I should watch for or avoid.
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dfwallis
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Posted: 02 Dec 2023 at 8:06pm |
jvin248 wrote:
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How accurate are the plow bottoms?
Bottom cut width and soil type, what are the typical standards?
I have a 52 WD, mostly clay, and curious what plows I should watch for or avoid.
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I can't personally say for sure. A CA can handle a 3-14 in good conditions. I used to plow even in some areas with tree roots with the CA (with overbore kit so tiny HP increase over stock) and a 2-14 without too much difficulty. I think a WD was billed as a solid 3 bottom capable tractor. So I'd say 3-14 in good condition, properly adjusted and traction booster properly adjusted, necessary ballast, should be able to handle just about any soil type. I've seen various specs from 5-8 HP per bottom for the 50 and 60 series plows (and one source as high as 13HP)
Edited by dfwallis - 02 Dec 2023 at 8:52pm
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