RPM levels question

[Deere05]

At the risk of starting an arguement, I would like some input as to what RPM levels people typically run their tractors. I have had my 4310 e-hydro for just over 1 year and have had zero problems running it at the levels that I do. The reason I am even asking is that on another thread someone recommended running at full throttle all the time. I do not believe this to be a good recommendation and I think most would agree. If I am just driving around for kicks or going from place to place on the property I usually have it at around 1500 in B range. Moving sand (not wet) with FEL I will bump it up to just over 1700. Using the PTO I will always put it at the PTO indicator level. My main concern is that even though I do not think I am stressing the hydro pump out, maybe their is something that I don't know that I don't know.
Thanks for any input.

 

[LeadPoison]

PTO speed for cutting. 2000 rpms for discing. For fel work it really all depends, but i tend to use the foot throttle mostly.

 

[NoMo]

The owner's manual for my 3520 says:
</font><font color="blue" class="small">( IMPORTANT: Avoid damage! Select the proper speed range and gear for the job:

· The machine may be operated in any gear with engine speeds at 950 - 2775 rpm. Within these limits, the engine can be placed under varying load operations.

· Never overload engine by lugging machine at low idle speeds.

· Raise engine speed to match expected loads. If a slight increase in engine rpm occurs simultaneously with moving hand throttle lever forward, the engine is not overloaded. )</font>

That tells me that, for my tractor, running at full-throttle is not required. Check the owner's manual for your tractor to see what it says about your specific model.

 

[browns40]

Hi deere05

I run my 3320 ehydro 1700-1900 to give the loadmatch a sec to catch up to any surprises... 1650 is maximum torque on mine, so thats my "zone" for power...

PTO implements I run between 1200-2600... some folks think you need that 540 RPM behind at all times, and if you really want 9 revolutions per second on that shaft, be my guest... it would make sanding impossible using the spreader, and only when the rotary cutter is facing a challenge do I go for the maximum blade tip speed... for maintaining low grass I do about 2100 & still get a decent cut without lugging...

The hydraulics do seem to benefit from higher RPM's in their lifting capabilities...

 

[Deere05]

Thanks for the info. It sounds like I am well within range.

 

[marco246]

I have a 4610 e-hydro and normally run it at 1700 RPM for just about every use except for mowing. The engine makes peak torque at 1700 RPM. I normally shut the engine down rather than idle it much, but if I'm going to idle it I use 1300. For mowing 20 acres of grass etc. every 3-4 months with an MX6 mower I use the PTO 540 RPM setting, which is about 2600 RPM on the engine. Takes about 12-13 hours. The grass is thick and tall, the slopes steep, the MX-6 heavy, and the e-hydro somewhat inefficient in terms of delivering power.

Have told my wife I need MORE POWER.