First Ground Contact Implement

[adventure bob]

I have 5ft tiller to my Kub 4060 and seem to have to rev the tractor awful **** high to get to 540RPM on the dash gauge: Is that normal?

 

[jeff9366]

You have a tachometer don't you? How many engine revs does it take to reach 540 rpm on the PTO indicator?

 

[Pete Judd]

Normal on these tractors, they are made to run full out all day long. I mow and hog, at 2600 rpm all day long, and the tractor just loves it.

 

[PHPaul]

True of most diesels: Better to run them at max rated RPM and pick an appropriate gear to set the ground speed. Lugging them just wastes fuel and can cause cylinder washing and get diesel in the oil.

My JD 750 happily runs at rated RPM running a log splitter for hours at a time and just sips fuel.

 

[gwdixon]

My BX2200 doesn't have a tach and has to be run at full throttle (WOT) to get what I'm only guessing to be 540 rpm at the PTO. It runs smoothly and efficiently as do the implements.

The important thing to remember is that an implement that calls for 540 rpm works best at the throttle setting that achieves that PTO rpm. On most tractors it seems to be somewhere between 2200 - 2800 rpm. There should be an indicator on the tach if the tractor has one.

Bush Hog-type mowers are particular noteworthy. Those big blade need to be spinning at a high rate in order to achieve and maintain the momentum to cut heavy grasses and even saplings. Running lower rpm will cause the blade to pivot out of the way on contact and teeth-rattling vibrations come into play.

Flail mowers have similar issues but with light flails the major problem is just very poor cuts. Think of how a weed-eater cuts much more efficiently when run at high speeds.

Rototiller can be run at lower rpms but the tiller and the tractor will suffer eventually.

 

[jeff9366]

I was using my PTO powered chipper yesterday.

Tach indicated 2,300 engine rps for 540 PTO rpm.

Tractor: Kubota L3560.

 

[TSO]

Yup ... my Massey 1648 is right around 2500 RPM's (it also has a digital display showing exactly what speed the PTO is turning) ... my LS R4047 (same ad NH Boomer 50 & Case Farmall 50B) was around 2500 as well.

 

[Travis_R]

My '98 Massey Ferguson 231 is 38 engine hp. and 34 PTO hp.
540 PTO is at 1788 engine RPMs. I can't believe how easy that Perkins engine sips diesel. One time I literally thought the fuel gauge quit working!

 

[Texasmark]

My Branson has 3 PTO speeds, lever selected in the cab, from 540 at the rated 2600 rpms down to 540 at around 1700 rpms. Torque curve peaks at 1600 and is relatively flat on out. Depending on work to be done, I can reduce the wear and tear and engine noise when desired.

Mark

 

[adventure bob]

The RPMs everyone is posting is right where Im at, 2350 to get to 540 on the tiller. The one thing I did notice though was that no matter how deep or how hard the ground was the Engine RPM never faltered, even climbing really steep stuff with the tiller engaged.
My previous experience with tillers and bush hogs was on a 9N which barely turned any rpm to get to PTO speed.

 

[skyhook]

Yup ... my Massey 1648 (it also has a digital display showing exactly what speed the PTO is turning)

Now that's a handy feature.:thumbsup:

 

[john_bud]

The old tractors were designed to run lower engine rpms. That gave them torque. The new designs run higher rpm as they have less torque, but get MORE hp due to the higher rpms.


The thing to do is just set the rpm to get 540 pto and go. The old iron will run lower rpm the new will run higher. Both get the job done. No need to over think.

 

[Texasmark]

The RPMs everyone is posting is right where Im at, 2350 to get to 540 on the tiller. The one thing I did notice though was that no matter how deep or how hard the ground was the Engine RPM never faltered, even climbing really steep stuff with the tiller engaged.
My previous experience with tillers and bush hogs was on a 9N which barely turned any rpm to get to PTO speed.

I had 3 Masseys over the years; TO 20, like your N series and a gas and diesel MF 35. The one I liked the most was the MF 35 with the Perkins 3 cyl diesel. PTO rpm was 1600, like some Fords I have/had, but the Perkie torque curve peaked at 1000 rpm. You try loading that little sucker up and it was a waste of time. I'd still have it but the clutch springs were way too heavy for my left leg and it got to be too much.

Mark