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PTO Generator Drives

T

Traditional Farmer

Well-known Member
Location
Virginia
Now that I went and bought my wood splitter at the Northern Tool store I'm looking at
PTO generators.Problem is all of them are set up to run 540 RPM which means a tractor running wide open for hrs.Does anyone know if there are ones around that say run 400 RPM so the tractor can be throttled back some? Or a kit available to accomplish this maybe something like a hydro drive on a garden tractor?
 
I thought about a belt/pulley set up to be able to lower the tractor RPM but wondered if the generator shaft and bearing would be able to handle the side pressure?
 
I have a Heisler 9-speed on my Farmall MD and I would engage that when running my PTO generator, especially at light loads, so the engine didn't have to turn so fast.
 
Tractors were made to run at pto rated speed all day long ? Just make sure your tractor is not bigger than you need. You can run a bigger generator with a little tractor as long as the load isn't too heavy for it.
Harbor Freight sells just the unit you can hook up however you want. Uncle hooked one up to run off a 2 cyl. belt pulley and mounted it under the belly of the tractor.
 
My Winco PTO unit needs to run at 515 PTO RPM. It's their 10KW unit.

Not quite full tilt if that helps.

K
 
What size are your generator and tractor? A ratio of 3 HP per Kilo-Watt helps avoid voltage drops and frequency drops at high electrical loads.
 
My gen set operates at 60 cycles at 460 PTO RPM
24 KVA...24,000 watts
Operate the little Beast with a 44 HP,3 cylinder Perkins Diesel Massey 35 X ....Engine will not burn 1 Gallon/HR.
I have reason to believe 12 KVA is being pulled from the Gen Set.
Used in Emergency only if and when Public Utility is unavailable.
a203675.jpg

a203676.jpg
 
I have Winco 8 Kw belt drive unit that is labeled a Dayton and was sold by Grainger. It has been belt driven by an Onan NH series engine with a 2:1 pulley ratio so that the engine only turns 1800 rpms for the last 30 years and no problems.
 
Well the trick is that you need the 60cyl. and the voltage follows along. I have all of my generators set at 60 by using a Fluke 179 meter. Todays electronics are very super sensitive to cycles being off. Stuff blows up. If you are running your farm the a PTO unit is the ticket and follow what the others are telling you. If you don't need to run whole neighborhood take a look at the two biggest units that Harbor freight sells. That 13.5K unit is a real beast of a machine. Most generators now are in the $100.oo per 1000 watt range. The only rule breaker is if you go for Winco machines. They are USA built and very expensive going for about twice the price. Have fun
 
Looking at a 13,000W generator they call for at least 25 HP but I have tractors that I can use from 16HP up to 80+ and a lot in between.Some are more fuel efficient than others
but still can't see running the tractor for hrs at full throttle when 2/3 throttle would do the job just as well
 
The only time I ran my WINCO I did it with my super M and I wasn't to thrilled with the performance but I think that was user error. The voltage jumped around A LOT, so much that I could see lights flickering and this with almost no load.

I talked to the support guys and they said that these things are super sensitive to PTO shaft alignment. Since mine is on a cart (I wanted to use it on non-3pt tractors) the PTO shaft was going up hill, not at a rate that would bother any farm equipment but I guess enough to bother the generator.

Oh and if you go WINCO and are thinking about a cart build your own. The one they sell is a HUGE rip off. It works but it way over priced.

I went WINCO to get a US company, when I got it home I found out the head was made in Italy...Go figure.

K
 

Look at the payback time of how many hours the generators runs . I doubt it will ever see the 1000hrs hours to break even. Put a dollar value on the savings . Or do you just want a tinker project to show the guys? If your tractor is such an old fragile fuel hog that it can't run over night at pto rpms on a generator . Time it was scrapped long ago.
It's a none issue, why invent a crisis?
 
I bought the Northern Tool 13kw/50 amp PTO generator last year. Runs on my 70 hp 1000 rpm PTO just fine, only requires 24hp. Meter on the unit showed steady output. But I use a frequency meter to dial it in to the right tractor engine speed for 60hz. I got the 50 amp because I didn't need more amps. Careful if you're going for the larger 100 amp model (25kw) I think it only has a 50 amp receptical (plus a 30a and 20a). At least that's what it showed in the product details. So you would have to do some rigging to feed 100 amps to your panel (maybe just as simple as a junction box for all 3 outputs).
 
Very simple ya got a 80 ho tractor put it on a thousand rpm shaft if you dont want to change the yoke go and by 1000 to 540 adapter run it on a thousand rpm at light loads if ya goin to pull alot of juice for awhile throw it on the 540 and run it thats what we do when were milking and then when were done milking put it on 1000 rpm!
 
So I guess if you have a 5 speed trans in your truck but it'll run 55 MPH in 3rd gear you
go down the hiway in 3rd instead of shifting to higher gears to get better mileage and
less wear on your truck? Guess if you shift into 5th it means your truck's drive train is a piece of junk?
I'm not going to throw money away on fuel and prematurely wear out equipment if I can avoid it when I can build a a gear reduction unit for cheap.And I'm looking for people with some knowledge on such things so I guess that rules you out(LOL)
 
I guess I don't understand the not wanting to run at 540 pto? I run my '52 8N and my new Kubota L2501 at 540 pto speed all day sometimes when mowing etc. That is probably harder on the tractor than just sitting and running a generator at 540. Maybe someone can explain this better to me? I would like to get a genset too now that I have the diesel Kubota. Thanks, Gary
 
Keep us posted on what you find. The technology exists, but it would be too expensive and inefficient to payoff on a 13 kilowatt generator. Talk to some generator manufacturers and let us know what they say.
 
(quoted from post at 16:06:14 10/20/15) So I guess if you have a 5 speed trans in your truck but it'll run 55 MPH in 3rd gear you
go down the hiway in 3rd instead of shifting to higher gears to get better mileage and
less wear on your truck? Guess if you shift into 5th it means your truck's drive train is a piece of junk?
I'm not going to throw money away on fuel and prematurely wear out equipment if I can avoid it when I can build a a gear reduction unit for cheap.And I'm looking for people with some knowledge on such things so I guess that rules you out(LOL)
Click to expand...

For all the hours of operation it's of no value . You need to find a real issue to contend with instead of having to invent a crisis.
 
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Bruce from Can.
Bruce from Can.
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