RPM's while working

[FishHaggis]

I have been reading a lot on this forum and have seen a few discussions on the RPM's while working the tractor. I recently have a 2320 and thought if I was using the PTO, to put it to the RPM where is shows the PTO at 540, which means I increase engine speed to full on.

I have been reading that you only have to have the RPM as fast as you "need"....... say keeping the RPM at 2200.

While moving dirt and sand, I need it full out for the bucket to work properly. When I am mowing my grass, I don't think I need it RPM'ing that fast, but thought I might mess up the gearing/linkages/engine/whatever if I slowed her down a bit. Will dropping your RPM while having the PTO working throw off the machine?

I keep the gear box in low when I am working the tractor, and will drive in high gear only when heading to or from a spot or when mowing my lawn.

 

[Transit]

Full rpm's may be excessive to get 540 at the pto. under revs can lug the engine and effect the quality of the cut. Can you check the tac?

 

[jester156]

the manual shows 3k for the PTO mark. I have also seen many running the MMM at 22-2500 on the TAC and I am sure it works fine, just spins the blades slower. I am sure it makes an adequate cut but in any slightly wet grass, it won't discharge it as effectively as it would with a little higher RMP.
I have tried to vary my PTO speed when using my rear blower and it just does not throw the snow far enough. even a little variation is enough to dump snow in an undesired location.

 

[Henri88]

I have been reading a lot on this forum and have seen a few discussions on the RPM's while working the tractor. I recently have a 2320 and thought if I was using the PTO, to put it to the RPM where is shows the PTO at 540, which means I increase engine speed to full on.

I have been reading that you only have to have the RPM as fast as you "need"....... say keeping the RPM at 2200.

While moving dirt and sand, I need it full out for the bucket to work properly. When I am mowing my grass, I don't think I need it RPM'ing that fast, but thought I might mess up the gearing/linkages/engine/whatever if I slowed her down a bit. Will dropping your RPM while having the PTO working throw off the machine?

I keep the gear box in low when I am working the tractor, and will drive in high gear only when heading to or from a spot or when mowing my lawn.

No problem to increase or slowing it down when pto is engage. Not sure it would do a good job on cutting your grass at a lower rpm. I cut mine at the suggested rpm of 540 same for the blower and the tiller. Just make sure you turn your pto on at idle before increasing your rpm. :thumbsup:

 

[greg_g]

Will dropping your RPM while having the PTO working throw off the machine?

Yes. it's actually the implement that's designed to work most efficiently with 540 rpm input to it from the tractor. Faster than that wastes fuel, slower than that may produce less than satisfactory results from the implement. Set the throttle to indicate PTO revs, then regulate your ground speed with the transmission. Low range in a geared tractor is generally fine. But experiment with H1. I had at least one tractor that was slower (ground speed) in H1 than it was in L4.

For work that doesn't involve PTO-driven implements, run the engine at whatever revs are necessary to prevent it from bogging down under load. Keeping a tractor revving at a constant speed is easier on it that throttling up and down all the time.

//greg//

 

[TracTrac]

When you run your engine faster your engine (and hyd) oil pump pumps more oil under a greater pressure. To make it simple, Just as a vehicle can hydroplane or water skier can ride on top of water you crank shaft and rod bearings ride on a layer of oil. When you "work" an engine too slow the crank no longer rides on top of a layer of oil. The metal comes in contact with metal. Not good.

 

[RalphVa]

For PTO work, I run at PTO speed, which is near 3k on the 4010. For other work, it's 1800-2500 rpm generally, depending on how much power I need. Goes up hills fine at 1800. The bucket works fine at around 2200, but if working it with gravel, it needs near PTO speed.

Ralph

 

[boggen]

personally don't like running any sort of engine at full max throttle non stop.
1/2 to 3/4 idle is what i normally run. now don't get me wrong. if i have mower on. and i am about to go through some thick dense wet grass. i will max it out. but after i get past that i will drop it back down.

perhaps a post hole digger on. will be slow revs low idle engine. then as it starts to bite into the ground. i would rev it up. once i got down to what depth i wanted. i might max throttle. and dip the auger up and down a couple times to help clean out the hole.

if i have a plow on. i might rev it up if i hit a big rock or ground is really compacted. to help pull through the given spot. then move throttle back down.

what i am trying to get at. don't be a ram rock. and try and get everything done as quickly as you can at full throttle. take your time. slower down. including yourself. it takes time and practice to learn the tractor and how to operate it. pending on what you are doing.

if ya have a large rottory blade not a finish mower, but a mower to cut down tall weeds. i normally refer to them as bush hogs. and ya get the blade hanged up on some large limb or stump. ya don't want to run full throttle to get it unstuck. shut down the pto back up. lift up the bush hog etc...

for the front loader. to work properly. again slower down. only time i use full throttle is when i am trying to put the bucket down into the ground to dig some. or working my way into a pile of dirt that has been setting there or perhaps a rock pile. and mainly for full throttle is to make sure i can get the power i need to the wheels to push into the piles or down into the dirt. once the hussle and bussel is over generally back down to 1/2 to 3/4 throttle.

if you have a finishing mower on. and the grass is to wet, or to tall. instead of trying to full throttle the entire yard. raise the deck up some or take half passes. and put it into a lower gear. so you are not moving as fast.

*shrugs* atleast above is me. i generally like being able to have the extra power or rather extra RPM's to get me through the tough spots when need be. vs finding out i just got stuck or burned up a belt, or have to do the old reverseing then going forward again. to retry doing what ever i was doing. due to full throttle wouldn't cut the cake.

 

[Gale Hawkins]

I kind of run in like I like to be run. :thumbsup:

Less RPM's means I can tear up less in the same amount of time. :laughing:

 

[Glen Watkins]

I see construction equipment, backhoes excavators mills all run at full throttle year at year with thousands of hours on them used hard and they just keep going!