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| Hi guys, I've got a quick question. In terms of a tractor working in the field in general is it better to gear up and throttle down if the tractor can handle the euipment or not. Does it save that much on fuel or is it better on the engine to run wide open when working. Feel as if it would save fuel throttling down but would be harder on the engine such as chisel plowing. Just curious as I'm a begginer, thanks! |
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Liberty, MO | I can see a good fuel savings shifting up throttling down in my 9190 and 9150 DA tractors, plenty of hydraulic volume to operated the planter and GP drill 3S3000, 30 ft hyd down pressure drill.
Edit 1500-2000 rpms, more if needed, usually not needed.
Edited by olwhda 5/30/2016 21:56
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Central Nebraska | The smart guys will chime in shortly so take this for what your paying for it. Newer tractors tend to have the most power in the 1800 rpm range where the older machines tend to be in the 2000-2100 rpm range. On CaseIH tractors they have the APM mode where it selects the appropriate gear and engine RPM for the desired load and speed. It ALWAYS chooses a higher gear and lower RPM than I think would be appropriate. Based on that I'm going to say it is better to gear up and throttle back as long as the engine doesn't overheat. |
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Sunburst Montana | JD has the same thing and you are right. It as it always goes lower on the rpms and higher on the gears then I would. We've have always run our tractors right around 1900 rpms before that. But we always made sure our tractors had 25-50 more hp then was the minimum needed. |
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NE SD | For light load under 1500 should not be an issue
Maybe less.
Most trucks run that or lower
Sure do not need 2Gs.
Trust the computer |
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Ontario | i like to run anywhere from 1800-2000 rpm depending on the tractor and what i'm doing with it. really depends what the tractor can handle tho, if you're lugging the engine it's not good so you have to kinda find the sweet spot. of course i know plenty of people that will just go wide open and leave it there. if these engines can sit in a combine at full throttle for thousands of hours i don't see why it wouldn't be the same in a tractor
Edited by Andy578 5/30/2016 22:26
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North Liberty and South Bend, Indiana | Totally engine and load dependant. |
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53590 | Most engines build less heat with lower rpms, most fans will be able to draw more air at say 1800 vs 2100. Old theory was rpms as in the case of allis chalmers! FWIW my versatile uses 11gph pulling fc and crumbler at wot (2200rpm+/-)If I shift up and run 1650 rpm it drops to 7.5-7.8 plus fan cycles a lot less. |
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Texas | On my 4440 I like to run around 1900 if the load allows it. |
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Manitoba, Canada | It really depends what you are pulling and where. In hills if you don't have a powershift you might need to run extra rpm and a lower gear to climb the hills without lugging it too bad. If I gear up and throttle down I always try cracking the throttle once I get it set up. If it gains rpm quite freely then I will run it that way. If it struggles to gain rpm then I will run a lower gear and throttle up a bit more. With today's fuel consumption read outs I am finding that the above method generally gets the best fuel consumption also. |
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Lancaster PA | Not to highjack the thread,but I have another question about working rpms. We have a silage bagger with a 540 pto that we run with our JD 4430. We at some point we would like to get a cheap big tractor to pull a manure tank and run the bagger. The problem is that all the big older JD tractors only have 1000 pto. Would you be able to run a bagger at 540 rpms with a 4840 with an adaptor on the 1000 pto? |
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Owensville, MO | Buddy here runs bagger with a 2390 Case and 1000 rpm shaft only. runs tractor at about 1200 engine rpms I believe. Has done that for years with no issues. That 504 Case motor still has a lot of grunt down that low. Not sure how the deere would like it. One way to find out.
Joe |
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Southeast Colorado | I mainly run my grain bagger with a 7120 case and always run the 1000 pto with the engine at 1200 rpm. I used the 4840 deere once and it worked fine. Just seemed too big and with the spread out duals in the way it just isn't as handy. It did run the bagger perfectly though. |
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South western ont | Indy cars run 11500 rpm and max at 12000. But I don't think they are concerned about fuel usage or even the life of the motor for that matter! |
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North Liberty and South Bend, Indiana | Actually they are very concerned about both motor life and fuel usage. |
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Engine Working RPMs
