Determining Tow-Behind (TBH) Commodity Cart/Seeding Tool Compatibility

Total cart weight with product needs to be calculated and compared to seeding tool weight to determine if they can be operated together in either flat or sloped operations.

  • For slopes up to 18% Grade (10 degrees), total weight of the cart plus material should not exceed 2.5 times the seeding tool weight.
  • For slopes between 18%-27% Grade (10-15 degrees) total weight of the cart plus material should not exceed two times the seeding tool weight.
  • For slopes above 27% Grade (15 degrees), Tow-Behind carts should not be used.

IMPORTANT: For further information, see "Operation or Transport on Hillsides".

1. Locate cart size/model and approximate weight in the chart.

NOTE: Grain weight of 60 lbs-per-bushel was used for calculation. Fertilizer calculations used 77 lbs-per-bushel. Your product density may be different.

Size/Model Weight (lbs.) Empty Weight (lbs.) With Grain Front, Fertilizer Rear and Third (If Equipped) Weight (lbs.) With Fertilizer in All Tanks
195 Bu. Tow-Behind 8,000 21,740 23,015
250 Bu. Tow-Behind (3rd Tank) 8,750 26,725 28,000
270 Bu. Tow-Behind 9,000 27,750 29,790
340 Bu. Tow-Behind (3rd Tank) 9,750 33,890 35,930
350 Bu. Tow-Behind 10,000 34,400 36,950
430 Bu. Tow-Behind (3rd Tank) 10,750 41,310 43,860

 

NOTE: If seeding tool is not listed on chart, or was not manufactured by John Deere, refer to your Seeding Tool Operator's Manual for weight.

2. Multiply seeding tool weight by 2 or 2.5, depending on operational slope grade (degrees) to determine if cart weight exceeds allowable maximum.

NOTE: Example uses a John Deere 31 Foot 735 Seeding Tool and 195 Bushel Tow-Behind Cart with fertilizer in both tanks.

  • For slopes up to 18% grade (10 degrees):

Seeding Tool Weight x 2.5 = Maximum Cart Weight 12,400 x 2.5 = 31,000 lbs.

  • For slopes between 18%-27% grade (10-15 degrees):

Seeding Tool Weight x 2 = Maximum Cart Weight 12,400 x 2 = 24,800 lbs.

3. Based on the calculations, example machine combination can be used on slopes up to 18% grade (10 degrees), as the actual weight of the cart with product (23,015 lbs.) is less than the calculated maximum weight (31,000 lbs.).

This machine combination can be used on slopes between 18%-27% grade (10-15 degrees) as the cart weight with product (23,015 lbs) does not exceed the maximum allowable weight (24,800 lbs) for this operating condition.

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When cart weight with product exceeds calculated maximum weight, product level will need to be reduced to lower cart weight into compliance. Take

a density reading of the product in use, determine pounds-per-bushel, and reduce percent-of-fill accordingly.

Seeding Tool Model Width (m) Width (ft) Weight (kg) Weight (lb)
730 8.5 28 4944 10,900
730 11.0 36 6305 13,900
730 13.4 44 7711 17,900
735 9.5 31 5625 12,400
735 11.0 36 6532 14,400
735 12.5 41 7893 17,400
737 9.5 31 7031 15,500
737 11.0 36 7938 17,500
737 12.5 41 9208 20,300
1690 9.1 30 5084 11,209
1690 11.0 36 5855 12,907
1690 12.2 40 6517 14,368
1690 12.8 42 6778 14,944
1810 9.6 31 6426 14,168
1810 11.3 37 6880 15,168
1810 12.7 41 7344 16,190
1810 13.7 45 7599 16,753
1810 15.9 52 10,750 23,700
1810 17.4 57 11,113 24,500
1810 18.3 60 11,294 24,900
1820 8.8 29 7666 16,900
1820 10.7 35 8754 19,300
1820 12.5 41 9888 21,800
1820 13.72 45 12,338 27,200
1820 16.2 53 13,426 29,600
1820 18.6 61 14,651 32,300
1860/1890 9.1 30 7711 17,000
1860/1890 11.0 36 9299 20,500
1860/1890 12.2 40 10,197 22,480
1860/1890 12.8 42 10,659 23,500

causym CAUTION: Do not exceed 195 bu tow-behind air carts. Weight package MUST be installed when using a tow-behind air cart with 1690.

 

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