Calculating Ballast-Without Dolly-Wheel on Drawbar Hitch
Tractors pulling non dolly-wheel scrapers should be ballasted so that 65-70 percent of the total static weight of the tractor is on the front axle. No rear ballast is recommended, as loading of the scraper will provide all the rear axle weight required.
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Add enough weight to the front axle to achieve the desired weight split. The chart below illustrates how weight splits between front and rear axle are affected as weight is added.
In this chart, weight is added to the front axle only.
Starting weight split is that for a base weight (standard) 4WD tractor. Then, to increase total weight per engine horsepower, add weight to front axle only.
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| Add to Front Axle |
Front Weight Split % |
Rear Weight Split % |
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| No Extra Weight |
59% |
41% |
| 454 kg (1000 lb) |
60% |
40% |
| 907 kg (2000 lb) |
61% |
37% |
| 1361 kg (3000 lb) |
62% |
38% |
| 1814 kg (4000 lb) |
63% |
37% |
| 2268 kg (5000 lb) |
64% |
36% |
| 2722 kg (6000 lb) |
65% |
35% |
| 4082 kg (9000 lb) |
72% |
28% |
| Cast Weights Required for Ballast Recommendation |
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| 966 kg (2130 lb) - 1-75 kg (165 lb) plus 2-204 kg (450 lb) weights on each dual wheel |
| 1270 kg (2800 lb) - 1-635 kg (1400 lb) weight each inner wheel |
| 1783 kg (3930 lb) - 1-204 kg (450 lb) installed on each inside/inner and 1-75 kg (165 lb) plus 3-204 kg (450 lb) weights on each front |
| 2644 kg (5830 lb) - 1-635 kg (1400 lb) installed on each inside/inner and 1-75 kg (165 lb) plus 3- 204 kg (450 lb) weights on each dual |
| 3962 kg (8734 lb) - The 2644 kg (5830 lb) weight listed above plus 1 front weight support/frame and 22 Quik-Tatch weights. NOTE: Support and front weights add weight to front axle and remove weight from rear axle due to leveraging. |
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OU1092A,00001E7 -19-29NOV07-1/1
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