Measuring/calculating PTO speed (not PTO speed = Machine speed / implement speed)

   / Measuring/calculating PTO speed (not PTO speed = Machine speed / implement speed)
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#11  
   / Measuring/calculating PTO speed (not PTO speed = Machine speed / implement speed)
  • Thread Starter
#12  
   / Measuring/calculating PTO speed (not PTO speed = Machine speed / implement speed)
  • Thread Starter
#13  
^^^^Yup.....get a tach if you dont have an owners manual.

But an unfamiliar machine to you....I'd do some web searching and see if you can find an operators manual
HAH! You reckon I have not tried? I am currently not being replied to by tomanuals.com, because they are they the only ones who even offer a manual.
 
   / Measuring/calculating PTO speed (not PTO speed = Machine speed / implement speed) #14  
Y

es but in what PTO gear? Anyway I see no such markings on my Tach
It's very common for these smaller Japanese tractors to have 4 PTO speeds. Something like 540 - 750 - 860 - 1000. All achieved at the rated RPM, probably in the 2500 engine RPM range like Ruffdog says.

It's also common to use the 750 RPM with less engine RPM to achieve 540 PTO RPM with less engine RPM, also known as 540E (E for economy).
 
   / Measuring/calculating PTO speed (not PTO speed = Machine speed / implement speed)
  • Thread Starter
#15  
That or similar^

Just don't get anywhere close to that spinning shaft, especially at 540. I'd probably mount it somehow to take some measurements, no way I'd hold it close to the shaft.
But isn't that why you use a laser? I know caution is needed, but try table saws and other stuff. "Stay away" is just common sense.

I have to admit that the proliferation of techno solutions does produce a loss of awareness. And that farming is still up there as the most dangerous job.
 
   / Measuring/calculating PTO speed (not PTO speed = Machine speed / implement speed) #16  
It's very common for these smaller Japanese tractors to have 4 PTO speeds. Something like 540 - 750 - 860 - 1000. All achieved at the rated RPM, probably in the 2500 engine RPM range like Ruffdog says.

It's also common to use the 750 RPM with less engine RPM to achieve 540 PTO RPM with less engine RPM, also known as 540E (E for economy).
It should be noted that running a higher pto gear at a lower engine speed will greatly reduce available HP.
 
   / Measuring/calculating PTO speed (not PTO speed = Machine speed / implement speed) #17  
OK. That laser thingy looks cheap enough to give a go without killing my bank balance. Even at the USD Aud exchange rate, I have a couple of jobs for it, right now. Thank you
Check to see if there is a optical tachometer app for a cell phone .....
 
   / Measuring/calculating PTO speed (not PTO speed = Machine speed / implement speed) #18  
I have an old mechanical tachometer for reading rpms of the end of shafts. The new mechanical ones cost more than the electrical ones.
 
   / Measuring/calculating PTO speed (not PTO speed = Machine speed / implement speed) #20  
I use a Stewart Warner direct contact tachometer to measure pto speeds.
 
 

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