PTO Generator Wet Stack?

[avc8130]

Are there any concerns with wet-stacking?

If the tractor is singing along at ~2550 rpm to maintain 540rpm at the PTO to maintain 60hz...this would be a BAD situation on a standalone diesel genset unless the generator is loaded at least 40% of capacity.

Is this "problem" non-existent on the tractor?

ac

 

[leonz]

Are there any concerns with wet-stacking?

If the tractor is singing along at ~2550 rpm to maintain 540rpm at the PTO to maintain 60hz...this would be a BAD situation on a standalone diesel genset unless the generator is loaded at least 40% of capacity.

Is this "problem" non-existent on the tractor?

ac

You have a load sensing generator?

As long as the tractor has coolant, engine oil,
fuel and an intact V belt for the water pump it
will run until it is run out of fuel or the squirrels
in the neigborhood steal it for a joy ride and crash it.

 

[avc8130]

You have a load sensing generator?

As long as the tractor has coolant, engine oil,
fuel and an intact V belt for the water pump it
will run until it is run out of fuel or the squirrels
in the neigborhood steal it for a joy ride and crash it.

So this:
Generator Discourse: Wet Stacking: What is it and why is it bad?
is not an issue?

ac

 

[radioman]

I think you just answered your own question. if a tractor NEEDS to be ~2550 rpm to maintain 540 rpm at the PTO then its fine for the tractor. For the standalone genny - I am sure its designed differently. Just like MY BX tractor. It needs to be at high RPMS to be at rated pto that is considered screaming to others who are used to larger engines that purrs at low rpms.

 

[simoutdoors]

If I understand the "wet stacking" issue correctly, the concern is engine deposits from repetitive cycles that don't load the engine and warm it to temperature. For a tractor mounted generator I would assume you use the tractor for other task. During those work cycles the engine should warm sufficiently to remove any deposits.

 

[avc8130]

If I understand the "wet stacking" issue correctly, the concern is engine deposits from repetitive cycles that don't load the engine and warm it to temperature. For a tractor mounted generator I would assume you use the tractor for other task. During those work cycles the engine should warm sufficiently to remove any deposits.

Sort of. The main concern is operating the engine at a high rpm (2550 in this case) to get the required 60hz, WITHOUT a load. Generally speaking, there will be very little load on the engine unless the generator is producing more than 40% of its rated output. For a 30hp PTO, that would be a 15kw generator with a 6kw load. This would generally only be the case when well pumps, fridges, and other large loads are actually DRAWING power.

ac

 

[CNC Dan]

i think the generators the article refers to are air cooled.
Your tractor likly has a thermostat that controls the engine temp.

 

[aczlan]

i think the generators the article refers to are air cooled.
Your tractor likly has a thermostat that controls the engine temp.

Actually, this is less of a problem with aircooled diesels as they run hotter.
IMO, if you are using it as a tractor regularly, this shouldn't be an issue. It more of an issue when gensets sit (a lot), don't get fully warmed up in testing and then are lightly loaded.

Aaron Z

 

[zzvyb6]

I hook up my 50kw Winpower just to run a 110v hedge trimmer out in front. Its been fine for 20 years. No I'm not worried.

Here is a sample Owners manual for these jobs. Note the comments about split-phase motors and starting current.

 

[avc8130]

It's not about a problem on the GENERATOR side, it's about whether it can damage the tractor engine.

Hooking up a 15kw pto genset, and running the tractor for 10 straight days during a power outage, only drawing a few kw.

That is my concern.

ac