2k rpm MMM engine speed question

[Dmacleo]

seems like odd question but is the 2k mid pto a 1:1 ratio with engine rpm?
have not seen anything in gc2400 manual nor the mmm manual on this.
what eng rpm do you guys run? 2-2200 rpm seems to work ok for me, but had only had one mowing on unit before putting away for winter in 2020 so never thought to look before.

 

[hube2]

My understanding is that the mid PTO is at 2000rpm at the same engine rpm that gets the rear PTO to 540rpm. The GC2400 is the equivalent of the GC1723E (same specs). The new manual for the GC1723E/GC1725M puts the engine rpm for the GC1723E at about 2500rpm to run the rear PTO at 540 and the mid PTO at 2000.

 

[LittleBill21]

my mahindra has different rpms in the gauge for mid pto and rear.

 

[hube2]

The Massey GCs are designed to run them separately of at the same time. It would be impossible to run them at the same time, both at the correct RPM if that required different engine speeds. Logically, that means they should both be design to run at the correct speed at the same engine RPM. My tach only has a 540 mark.

 

[Dmacleo]

I was just thinking about that 15 minutes ago and was gonna update post. Did see sentence in mower manual to run engine high speed that I had missed earlier. So yeah 2500 rpm is what needed

The Massey GCs are designed to run them separately of at the same time. It would be impossible to run them at the same time, both at the correct RPM if that required different engine speeds. Logically, that means they should both be design to run at the correct speed at the same engine RPM. My tach only has a 540 mark.

 

[jeepcj7]

You are correct - on the tach 540 rpm rear PTO speed = 2000 rpm mid PTO speed.

 

[Flatrockcorner]

My manual shows the the 540 pto speed
Gc1723 is 2532 rpm
Gc1725 is 2829 rpm

2000 rpm mid pto
Gc1723 is 2476 rpm
Gc1725 is 2947 rpm

 

[hube2]

My manual shows the the 540 pto speed
Gc1723 is 2532 rpm
Gc1725 is 2829 rpm

2000 rpm mid pto
Gc1723 is 2476 rpm
Gc1725 is 2947 rpm

The RPMs given for the CG1725M are different by only 4%, for the GC1723E there is only about a 2% difference.

PTO speed does not need to be exact, if it did then tractors would have a gauge on it to tell us PTO speed.

I'm sure that most implements can manage a +/-% difference in PTO speed, again, if this was not the case then Massey would not tell us that we could run the rear and mid PTO's at the same time and it would not be possible to do so.

 

[Flatrockcorner]

The RPMs given for the CG1725M are different by only 4%, for the GC1723E there is only about a 2% difference.

PTO speed does not need to be exact, if it did then tractors would have a gauge on it to tell us PTO speed.

I'm sure that most implements can manage a +/-% difference in PTO speed, again, if this was not the case then Massey would not tell us that we could run the rear and mid PTO's at the same time and it would not be possible to do so.

Oh I agree with you 100%, I just shoot for the 540 mark on my tach and call it good, That way my employment whether it is my tiller or my mid mount mower is running right about where I needs to do.