PTO generator sizing

[CincyFlyer]

Ok so seams like a good deal then, it痴 a 1800 rpm which is great also!

Hopefully it has some internal gearing, as the PTO is likely 540 rpm at near max engine RPM.

 

[Jcoon]

Hopefully it has some internal gearing, as the PTO is likely 540 rpm at near max engine RPM.

Well of coarse it’s got a gear box, it’s PTO generator. I was simply stating the generator head is a 1800rpm, instead of the 3600 rpm that most generators are, so it turns half the rpm that most generators do to create equal to or greater power.

 

[buickanddeere]

With "all the losses" through the system, you can pull 14kw out of a 28 pto hp tractor...

Those quoting higher, aren't figuring in the losses...

SR

You talking gross flywheel HP or PTO HP ?

 

[Jcoon]

Tractor is a 35 hp, although could be made 40 hp, as they are the same engine, just turned up a little more, I think I heard it’s actually the same engine up to the 50 or 55 HP.

 

[John_Mc]

OK, thanks. Will look into that.
Doing a little research after seeing this thread, I'm pretty sure it doesn't matter how much I need to run the whole house. My 16 hp tractor tops out with a 7200 amp generator anyway. Pretty sure my heat pump will take a lot more than that to keep the house warm. But, if I can power the fire place fan, the frig, the microwave, coffee maker and a couple of lights available, we'll survive till the power comes back on. Or, I run out of diesel.

Looking at the breaker size in your panel for the heat pump will give you a rough idea of what you need to run it. The breaker is going to be larger than the max draw of the heat pump. The name plate data no the heat pump woudl be even better, but depending on your installation it may be hard to get to. A 7200 watt generator should put out about 30 amps.

Personally, I prefer a stand-alone generator for emergency power. I seem to end up using my tractor pretty heavily during power outages.

With some careful load management, I ran my 2200 sq ft house (not including the basement, some of which is finished) with a 4000 watt continuous / 6600 watt surge generator during some extended power outages. My house is definitely not "all electric" like yours, Blackrams. I also had to do some switching here and their (for example, shutting of either my fridge or freezer before kicking on the deep well pump, which has a pretty good surge on startup). It took some attention to what we were running simultaneously, but it was manageable

 

[John_Mc]

With "all the losses" through the system, you can pull 14kw out of a 28 pto hp tractor...

Those quoting higher, aren't figuring in the losses...

Agreed. a 2:1 ratio of PTO HP (NOT engine HP) to KW load is a pretty good rule of thumb. If you exceed that, you risk voltage and frequency drops when under heavy loads or surges.

 

[blackrams]

Looking at the breaker size in your panel for the heat pump will give you a rough idea of what you need to run it. The breaker is going to be larger than the max draw of the heat pump. The name plate data no the heat pump woudl be even better, but depending on your installation it may be hard to get to. A 7200 watt generator should put out about 30 amps.

Personally, I prefer a stand-alone generator for emergency power. I seem to end up using my tractor pretty heavily during power outages.

With some careful load management, I ran my 2200 sq ft house (not including the basement, some of which is finished) with a 4000 watt continuous / 6600 watt surge generator during some extended power outages. My house is definitely not "all electric" like yours, Blackrams. I also had to do some switching here and their (for example, shutting of either my fridge or freezer before kicking on the deep well pump, which has a pretty good surge on startup). It took some attention to what we were running simultaneously, but it was manageable

Thanks for responding.

Yep, I've got a 4500 Onan that I took out of an older self-contained RV. Used it once so far in five years. Was thinking the PTO generator would be an up grade but, maybe not. That Onan is a butt kick'n generator. Hard to beat, just was hoping to give my better half more energy for that "hot air" blower she can't live without.

Rams :drink:

 

[Industrial Toys]

The PTO set was a PITA! Nice to have vs nothing, but still a pain. MOST times, you never know how long the power will be out, and THAT IS THE PROBLEM! How much bother do you want to go through? I am five minutes from having whole property power now compared to maybe half an hour or better with the PTO set. That includes getting dressed and walking a couple hundred yards to the generator.

If there was something on the tractor, the genset was buried, the tractor was buried, it was dark or the weather was bad, the operation took longer. Sometimes if it was getting late, I just wouldn't even bother. Shame. You have it, but it's too much hassle! And working with a GREASY pto coupling is always a treat. AND THEN, The power comes back on!

 

[Sawyer Rob]

If there was something on the tractor, the genset was buried, the tractor was buried, it was dark or the weather was bad, the operation took longer. Sometimes if it was getting late, I just wouldn't even bother. Shame. You have it, but it's too much hassle! And working with a GREASY pto coupling is always a treat. AND THEN, The power comes back on!

First of all, I sure don't need power for an half hour outage! lol

Secondly, just because you handled your pto genset "set up" poorly, that's not the generators problem!

Setting up a pto generator so all you have to do is drive the tractor over, hook up the pto shaft, just isn't a problem for me. In fact, my tractor is all warmed up when I get to the short distance the generator is sitting from the tractor.

NO generator is going to be much good, IF it's stored in the back of some building... lol

SR

 

[blackrams]

AND THEN, The power comes back on!

Some times, if you're lucky.

Went 8 days with no power in Mississippi once. IIRC that was back in 95, Remember, feeling cold is relative to what you're used to. But, that was a freak year and it was below zero most all of that time. Had two young'ns back then, a toddler and an infant. Busted my butt for 8+ days cutting firewood and keeping a fire going in the fireplace, heated water on the BBQ outside. All this while I continued to go to work and sit in the dark just incase the power came back on.

Today, I now have a pace maker and other issues, such an endeavor would probably kill me. Not taking silly chances. NO power and I'm going somewhere that has power.

Rams