|
While seeding, the transmission crank turns on the left-hand side of the machine. The crank rotates a certain number of turns per acre. There can be up to 500 turns per acre, so the following calculation shows how to figure the number of turns for
1/10 acre
.
IMPORTANT:
Meter accuracy is directly related to the amount of product metered out. At least 10 lbs. of metered product is required for accurate results with this method.
For example, 1/10 of an acre of canola is only about 0.3 lb. The scale provided cannot accurately weigh small amounts. Another verification method must be used with this product.
1.
Calculate wheel turns for 1/10 acre.
FORMULA:
Number of Wheel Turns for 1/10 acre = 52,272 ÷ Seeding Tool Width (ft) ÷ Drive Tire Circumference (in.)
EXAMPLE:
1910 cart with 30 ft. seeding tool and 28L x 26 R3 tires. Tire circumference from the Drive Tire Chart is 188 in.
Wheel turns for 1/10 acre: 52,272 ÷ 30 ft. ÷ 188 in. = 9.27 turns per 1/10 acre.
|
| Drive Tire Chart |
| Tire Size |
Tire Circumference (in/rev) |
| 18.4-26 R3, 10PR |
165 |
| 18.4-26 R2, 10PR |
173 |
| 23.1-26 R3, 10PR |
178 |
| 23.1-26 R2, 10PR |
198 |
| 28L-26 R3, 12PR |
188 |
| 28L-26 R2, 12PR |
200 |
| 28.1-26 R1, 12PR |
205 |
| 30.5L-32 R3, 12PR |
211 |
| 30.5L-32 R2, 12PR |
223 |
| 30.5L-32 R1, 14PR |
217 |
| 20.8R-38 R1, 1 STAR |
222 |
| 710/70R-38 R1W, 2 STAR |
232 |
| 18.4R-46 R1, 3 STAR |
237 |
| 20.8R-42 R1, 2 Star |
231 |
2.
Calculate crank turns for 1/10 acre.
FORMULA:
Number of Crank Turns = Wheel Turns x 2.333 x Wheel Sprocket Teeth ÷ Row Space Sprocket
EXAMPLE:
The chain sprocket has 62 teeth and the row space sprocket has 27 teeth.
|