120 New Holland 890 Forage Harvester (1979)
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Evaluation Report No. E0378A Printed: November, 1979 Tested at: Portage la Prairie ISSN 0383-3445 Evaluation Report 120 New Holland 890 Forage Harvester A Co-operative Program Between ALBERTA FARM MACHINERY PAMI RESEARCH CENTRE PRAIRIE AGRICULTURAL MACHINERY INSTITUTE NEW HOLLAND MODEL 890 FORAGE The New Holland 890 was safe to operate if the manufacturer’s HARVESTER safety recommendations were followed. Only minor mechanical problems occurred during the 230 MANUFACTURER: hour test. Sperry New Holland New Holland, Pennsylvania U.S.A. 17557 RECOMMENDATIONS DISTRIBUTORS: It is recommended that the manufacturer consider: Sperry New Holland 1. Modifi cations to provide adequate fl oatation for the three-row -Box 777 Winnipeg, Manitoba R3C 2L4 row crop head. -Box 1907 Regina, Saskatchewan S4N 2S3 2. Providing more reliable electrical connectors for the remote -Box 1616 Calgary, Alberta T2P 2M7 control system. 3. Providing a convenient method for drive chain lubrication. RETAIL PRICE: 4. Improving the information in the operator’s manual on adjusting $18,447.00 (November 1979, f.o.b. Portage la Prairie, with and checking the smooth roll scraper clearance. electric remote control, electronic metal detector, 2.4 m windrow Chief Engineer E.O. Nyborg pickup and 3-row row crop head). Senior Engineer J.C. Thauberger Project Engineer R.R. Hochstein THE MANUFACTURER STATES THAT: The Model 890 has been superseded by the Model 892, which has incorporated many improvements. In answer to your specifi c recommendations, you will fi nd that the new model has improved fl oatation for the three-row row crop head and that the electrical connectors have been improved. The feed rolls can now be raised manually for easy adjustment of the smooth roll scraper and this point is covered clearly in the Operator’s Manual. GENERAL DESCRIPTION The New Holland 890 (FIGURE 1) is a power take-off driven, pull-type, forage harvester with cylindrical cutterhead. It is available either with a windrow pickup or a row crop head. The cutterhead is fed by a reversible feedroll assembly. Length of cut may be set, either by changing the feedroll drive sprockets, or by varying the number of cutterhead knives. Chopped forage is delivered from the cutterhead to the discharge fan with a transfer FIGURE 1. New Holland 890 Schematic. auger. The adjustable discharge tube and the feedroll clutch are electrically controlled from the tractor seat. The test machine was equipped with a 2.4 m windrow pickup SUMMARY AND CONCLUSIONS as well as a three-row row crop head. It was also equipped with an Overall functional performance of the New Holland 890 was optional electronic metal detector safeguard, controlling the feedroll very good. Ease of operation and adjustment was very good. drive. Workrates ranged up to 23 t/h (25 ton/h) in standing corn, up Detailed specifi cations are given in APPENDIX I while FIGURE to 36 t/h (40 ton/h) in alfalfa and up to 31 t/h (34 ton/h) in barley. 1 shows the location of the major components. Dry-weight workrates ranged up to 9 t/h (10 ton/h) in corn, up to 13 t/h (14 ton/h) in alfalfa and up to 19 t/h (21 ton/h) in barley. SCOPE OF TEST In windrowed crops, capacity was limited by performance of the The New Holland 890 was operated in the crops shown windrow pickup, which usually limited ground speed to less than in TABLE 1 for 230 hours while harvesting about 270 ha. It was 8 km/h (5 mph). The three-row row crop head was well suited to evaluated for rate of work, quality of work, power requirements, typical prairie corn crops. Row crop head speed could be adjusted ease of operation and adjustment, operator safety, and suitability of to suit ground speeds up to 13 km/h (8 mph). the operator’s manual. The use of a 57 mm (2 in) recutter screen reduced workrates by as much as 27%. The recutter screen signifi cantly reduced the TABLE 1. Operating Conditions number of long silage particles but resulted in increased power Average Yield Field Area consumption and reduced harvesting rates. Crop t/ha at 60% moisture contentHours ha At the 6 and 9.5 mm (0.25 and 0.37 in) length-of-cut settings, only 1% of alfalfa silage had a length greater than 100 mm (4 in) Alfalfa 11 45 52 Grass 11 11 13 and about 5% of corn silage had a length greater than 26 mm Clover 12 34 47 (1 in). Green Barley 7 to 12 13 15 A tractor with 110 kW (150 hp) maximum power take-off rating Corn (three row row crop head) 20 to 35 127 143 would have suffi cient power reserve to operate the New Holland 890 in most fi eld conditions. Power consumption was about 25% Total 230 270 higher at the 3 mm (0.12 in) length-of-cut setting, than at the 6 mm (0.25 in) setting. RESULTS AND DISCUSSION The electric remote controls were very convenient. The RATE OF WORK optional metal detector was effective in preventing ferrous metal TABLE 2 presents typical workrates for the New Holland 890 objects from entering the cutterhead. Changing from the windrow in a variety of fi eld conditions. The workrates for alfalfa and barley pickup to the row crop head was relatively easy. Cutterhead green feed were measured in crops yielding above 10 t/ha, which knife sharpening and shear plate adjustment both were easy to had been windrowed with 5 to 5.5 m wide windrowers, while the perform. workrates in corn were measured in standing crops yielding more Page 2 than 30 t/ha, harvested with the three-row row crop head. The TABLE 3. Particle Size Distribution in Alfalfa reported values are for average continuous feedrates, with the Particle Length Percent of Total Sample Weight harvester loaded to optimum levels, usually governed by pickup or Without Recutter Screen With 57 mm Recutter Screen row crop head performance. Daily workrates would be lower than those in TABLE 2, since the reported values do not include time for 3 mm Cut 6 mm Cut 9.5 mm Cut 6 mm Cut 9.5 mm Cut Setting Setting Setting Setting Setting maintenance and unloading of wagons. Less than 4 mm 21 12 Fig. 7a 12 22 28 TABLE 2. Average Workrates 4 to 9 mm 57 40 Fig. 7b 37 54 46 9 to 13 mm 11 23 Fig. 7c 24 15 17 Crop Moisture Length-of-Cut Workrates 13 to 26 mm 6 16 Fig. 7d 16 7 7 Content Setting t/h 26 to 100 mm 5 8 Fig. 7e 10 2 2 Greater than 100 mm none 1 Fig. 7f 1 none none % mm Actual Dry Weight Alfalfa 70 3 28.5 8.5 TABLE 4. Particle Distribution in Corn 64 26.2 9.4 Particle Length Percent of Total Sample Weight 50 16.8 8.4 47 13.5 7.2 3 mm Cut Setting 6 mm Cut Setting 9.5 mm Cut Setting 69 6* 22.0 6.8 Less than 5 mm 19 13 Fig. 8a 8 64 6 36.0 13.0 5 to 7 mm 19 15 Fig. 8b 11 50 6 23.9 12.0 7 to 9 mm 27 30 Fig. 8c 25 47 6 18.2 9.7 9 to 13 mm 20 25 Fig. 8d 27 13 to 26 mm 10 12 Fig. 8e 25 Green Barley 40 3 22.1 13.2 Greater than 26 mm 6 5 Fig. 8f 4 3* 18.2 11.0 6 31.3 18.8 6* 23.0 13.8 Row Crop Head Losses: Losses from the three-row row crop Corn 60 3 16.0 6.5 head were insignifi cant at speeds below 9 km/h. Crop conditions did 6 23.0 9.2 not warrant greater speeds. Precise centering of the row crop head *With 57 x 154 mm Recutter Screen directly upon corn rows, to maintain picking losses at a minimum, was not essential. The upper gathering chain in effect widened Both actual workrates and dry-weight workrates are reported the allowable stalk entrance to almost twice that of a conventional, in TABLE 2. The actual workrates, which include the crop moisture single chain, stalk-gathering system. content, indicate the weight of forage being harvested, but should not be used for comparing performance of different forage harvesters or POWER REQUIREMENTS for assessing the effect of crop variables and machine settings. The Tractor Size: Peak power take-off input at maximum workrate dry-weight workrates, which indicate the weight of dry matter being was about 110 kW in alfalfa and 90 kW in corn. Corresponding average harvested, provide better comparative data. power requirements were about 75 and 70 kW, respectively. Actual workrates ranged up to 36,t/h whereas dry-weight work- Power requirements increased with shorter cut settings and rates ranged only up to 18.8 t/h. with higher moisture contents. For example, when harvesting Workrates were infl uenced by crop moisture content, length- 11 t/ha alfalfa, at 50% moisture content (at a dry-weight workrate of of-cut setting, use of a recutter screen and the type of header 10 t/h), changing the length-of-cut setting from 6 to 3 mm increased attachment used. An increase in the moisture content of alfalfa the power take-off input by 16 kW. At the same dry-weight workrate, from 47% to 70% decreased the dry-weight workrate by about 20%. in the same fi eld conditions, 20% higher crop moisture content Changing the length-of-cut setting in alfalfa, from 6 mm to 3 mm, increased power consumption only marginally.