University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Nebraska Tractor Tests Tractor Test and Power Museum, e Lester F. Larsen 1-1-1965 Test 914: John Deere 2510 Syncro-Range Gas Follow this and additional works at: hp://digitalcommons.unl.edu/tractormuseumlit Part of the Applied Mechanics Commons is Article is brought to you for free and open access by the Tractor Test and Power Museum, e Lester F. Larsen at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Nebraska Tractor Tests by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. "Test 914: John Deere 2510 Syncro-Range Gas" (1965). Nebraska Tractor Tests. Paper 406. hp://digitalcommons.unl.edu/tractormuseumlit/406
Transcript
University of Nebraska - LincolnDigitalCommons@University of Nebraska - Lincoln
Nebraska Tractor Tests Tractor Test and Power Museum, The Lester F.Larsen
1-1-1965
Test 914: John Deere 2510 Syncro-Range Gas
Follow this and additional works at: http://digitalcommons.unl.edu/tractormuseumlitPart of the Applied Mechanics Commons
This Article is brought to you for free and open access by the Tractor Test and Power Museum, The Lester F. Larsen at DigitalCommons@University ofNebraska - Lincoln. It has been accepted for inclusion in Nebraska Tractor Tests by an authorized administrator of DigitalCommons@University ofNebraska - Lincoln.
"Test 914: John Deere 2510 Syncro-Range Gas" (1965). Nebraska Tractor Tests. Paper 406.http://digitalcommons.unl.edu/tractormuseumlit/406
NEBRASKATRACTOR TEST 914 - JOHN DEERE2510 SYNCRO-RANGE GASOLINE
' " POWER TAKE-OFF PERFORMANCE
Hp
MAXIMUM POWER AND FUEL CONSUMPTION
53.74Rated Engine Speed-Two Hours
4.766 0.547 11.28 167 65 75 28.907 ~2500
48.28Standard Power Take-off Speed (1000 rpm)-One Hour
2071 4.152 0.530 11.63 169 66 75 28.860
VARYING POWER AND FUEL CONSUMPTION-TWO HOURS
VARYING DRA WBAR POWER AND FUEL CONSUMPTION WITH BALLAST
Department of Agricultural EngineeringDates of Test: SEPTEMBER 24 TO OCTOBER
2, 1965
Manufacturer: JOHN DEERE WATERLOOTRACTOR WORKS, WATERLOO, IOWA
FUEL, OIL and TIME Fuel regular gasolineOctane No Motor 85.2 Research 92.3 (ratingtaken from oil company's typical inspection data)Specific gravity converted to 600/600 0.7410Weight per gallon 6.168 Ib Oil SAE 20-20W APIservice classification MS, DG To motor 1.455 galDrained from motor 1.271 gal Transmission andfinal-drive lubricant John Deere Special 303 oilTotal time engine was operated 44 hours.
ENGINE Make John Deere gasoline Type 4cylinder vertical Serial No SNM51RAOl2729TCrankshaft mounted lengthwise Rated rpm 2500Bore and stroke 3.86" x 3.86" Compression ratio7.5 to I Displacement 180.43 cu in Carburetorsize I" Ignition system battery Cranking system12 volt electric Lubrication pressure Air cleanerdry type with replaceable treated paper elementOil filter replaceable pleated paper cartridgeOil cooler radiator for transmission and hydrau-lic oil Fuel filter screen in carburetor and fuel
pump Muffler was used Cooling medium tern.perature cotnrol thermostat.
CHASSIS Type tricycle Serial No SNT711-ROO1O11R Tread width rear 57" to 91" front8%" or 18\;2" Wheel base 90" Center of gravity(without operator or ballast, with minimumtread, with fuel tank filled and tractor servicedfor operation) Horizontal distance forward fromcenter-line of rear wheels 28.6" Vertical distanceabove roadway 35.1" Horizontal distance fromcenter of rear wheel tread 0" to the right/leftHydraulic control system direct engine driveTransmission selective gear fixed ratio with par-tial range synchro-mesh Advertised speeds mphfirst 1.78 second 2.80 third 3.65 fourth 4.69 fifth
5.73 sixth 7.69 seventh 9.62 eighth 15.76 reverse(at 2100 rpm) first 2.98 second 4.68 Clutch singleplate dry disc operated by foot pedal Brakeswet disc hydraulically power actuated operatedby two foot pedals which can be locked togetherSteering hydraulic with power assist Turningradius (on concrete surface with brake applied)right 103\;2" left 103\;2" (on concrete surfacewithout brake) right 125" left 125" Turningspace diameter (On concrete surface with brakeapplied) right 243\;2" left 243\;2" (on concretesurface without brake) right 287" left 287" Beltpulley 976 rpm at 2)00 engine rpm diam 12"face 8yz" Belt speed 3063 fpm Power take.off546 or 1014 rpm at 2100 engine rpm.
REPAIRS and ADJUSTMENTS No repairs oradjustments.
REMARKS All test results were determinedfrom observed data obtained in accordance withthe SAE and ASAE test code.
First gear was not run as it was necessary tolimit the pull in second gear to avoid excessivewheel slippage. Eighth gear was not run as itexceeded 15 mph.
A small hydraulic leak was evident during thetest.
We, the undersigned, certify that this is a trueand correct report of official Tractor Test 914.L. F. LARSEN
Engineer-in -ChargeG. W. STEINBRUEGGE, ChairmanJ. J. SULEKD. E. LANE'
Board of Tractor Test Engineers
The University of Nebraska Agricultural Experiment StationE.' F. Frolik, Dean; H. H. Kramer, Director, Lincoln, Nebraska,
Fuel Consumption Temperature Degrees FCrank. Hp-hr Barometershaft Gal Lb per Air Air inches ofspeed per per gal Cooling wet dry Mercuryrpm hr hp-hr medium bulb bulb
Hp bar miles shaft of Gal Lb Hp-hr Cool- Air Air eterpull per speed drivers per per per ing wet dry inches oflb. hr rpm % hr hp-hr gal med bulb bulb Mercury
'-'" Front 1710 Ib 1790 IbTotal weight with operator 8345 Ib 6245 Ib
EXPLANATIONOF TESTREPORT
GENERAL CONDITIONS
Each tractor is a production model equipped for com-mon usage. Power consuming accessories can be discon-nected only when it is convenient for the operator to doso in practice. Additional weight can be added as ballastif the manufacturer regularly supplies it for sale. The'static tire loads and the inflation pressures must conformto recommendations in the Tire Standards published bythe Society of Automotive Engineers.
PREPARATION FOR PERFORMANCE RUNS
The engine crankcase is drained and refilled with ameasured amount of new oil conforming to specificationsin the operators manual. The fuel used and the mainte-nance operations must also conform to the publishedinformation delivered with the tractor. The tractor isthen limbered-up for 12 hours "On drawbar work in ac-cordance with the manufacturer's published recommend-ations. The manufacturer's representative is present tomake appropriate decisions regarding mechanical ad-justments.
The tractor is equipped with approximately theamount of added ballast that is used during maximumdrawbar tests. The tire tread-bar height must be at least65% of new tread height prior to the maximum powerrun.
BELT OR POWER TAKE-OFF PERFORMANCE
Maximum Power and Fuel Consumption. The manu-facturer's representaitve makes carburetor, fuel pump,ignition and governor control settings which remain un-changed throughout all subsequent runs. The governorand the manually operated governor control lever is setto provide the high-idle speed specified by the manufac-turer for maximum power. Maximum power is measuredby connecting the belt pulley or the power take-off to adynamometer. The dynamometer load is then graduallyincreased until the engine is operating at the rated speedspecified by the manufacturer for maximum power. Thecorresponding fuel consumption is measured.
Varying Power and Fuel Consumption. Six differenthorsepower levels are used to show corresponding fuelconsumption rates and how the governor causes the en-gine to react to the following changes in dynamometerload: 85% of the dynamometer torque at maximum pow-er; minimum dynamometer torque, Y2 of the 85% torque;maximum power, y,J: and % of the 85% torque. Since atractor is generally subjected to varying loads the averageof the results in this test serve well for predicting the fuelconsumption of a tractor in general usage.
DRA WBAR PERFORMANCE
All engine adjustments are the same as those used inthe belt or power take-off tests. If the manufacturer speci-fies a different rated crankshaft speed for drawbar op-erations, then the position of the manually operatedgovernor control is changed to provide the high-idlespeed specified by the manufacturer in the operatinginstructions.
Varying Power and Fuel Consumption With Ball~st.The varying power runs are made to show the effect ofspeed-control devices (engine, governor, automatic trans-
mission, etc.) on horsepower, speed and fuel consump-tion. These runs are made around the entire test coursewhich has two 180 degree turns with a minimum radiusof 50 feet. The drawbar pull is set at 3 different levels asfollows: (1) as near to the pull at maximum power aspossible and still have the tractor maintain the travelspeed at maximum horsepower on the straight sections ofthe test course; (2) 75% of the pull at maximum power;and (3) 50% of the pull at maximum power. Prior to1958, fuel consumption data (10 hour test) were shownonly for the pull obtained at maximum power for trac-tors having torque converters and at 75% of the pullobtained at maximum power for gear-type tractors.
Maximum Power with Ballast. Maximum power ismeasured on straight level sections of the test course.Data are shown for not more than 12 different gears ortravel speeds. Some gears or travel speeds may be omittedb~cause of high slippage of the traction members or be-cause the travel speed may exceed the safe-limit for thetest course. The maximum safe speed for the NebraskaTest Course has been set at 15 miles per hour. The slip-page limits have been set at 15% and 7% for pneumatictires and steel tracks or lugs, respectively. Higher slip-
. page gives widely varying results.Maximum Power Without Ballast. All added ballast
is removed from the tractor. The maximum drawbarpower of the tractor is determined by the same procedureused for getting maximum power with ballast. The gear(or travel speed) is the same as that used in the lO-hourtest.
Varying Power and Travel Speed with Ballast. Travelspeeds corresponding to drawbar pulls beyond the maxi-mum power range are obtained to show the "luggingability" of the tractor. The run starts with the pull atmaximum power; then additional drawbar pull is ap-plied to cause decreasing speeds. The run is ended byone of three conditions: (I) maximum pull is obtained,(2) the maximum slippage limit is reached, or (3) someother operating limit is reached.
For additional information about the Nebraska Trac-tor Tests write to the Department of Agricultural Engi-neering, University of Nebraska, Lincoln, Nebraska.
