Building a new PTO driven generator

   / Building a new PTO driven generator #1  

DiamondMaker

New member
Joined
Jun 14, 2012
Messages
6
Location
Richwood, Ohio
Tractor
JD 870
I just bought a 20 K generator head. I am planning to mount it on a small trailer and use my JD tractor to drive it. I have two questions at the moment. #1- I plan on driving it using a belt. Will a double belt be enough to handle it under power? #2- What size pulleys do I need? 2-1/2" on the head and 6-7" on the PTO drive side? Since the gen head works in either rotation the gen head will be facing backwards.

More questions later!:laughing:
Thanks,
Rog
 
   / Building a new PTO driven generator #2  
First you need to know if it is a 2 pole or a 4 pole generator, 2 pole is 3600 rpm, and 4 pole is 1800 rpm,

so you need to know your tractors PTO speed, (most likely 540 or 1000 RPM) then you will need belts capable of transmitting about 30 horse power, then you need to know what size of pully will transmit the power to the belt that needs carry at full load,

so most likely you will need to down load a Browning Pulley catalog and start to do your home work, http://www.emersonindustrial.com/en.../resources/online-catalogs/Pages/default.aspx
 
   / Building a new PTO driven generator #3  
give us a little more INFO, and maybe we can help some more,
 
   / Building a new PTO driven generator
  • Thread Starter
#4  
Thanks for the response. I wanted to drive my ST-20 with a belt driven system. I saw someone on here had made a setup like that and I liked the looks of the setup. After checking on prices and still not knowing for sure the HP of the belts capability, I see it will be in my best interest to buy a 'TRACTOR PTO DRIVE GEAR BOX' and 44mmX48mm love joy coupler from a supplier. I checked and the PTO Drive Gear Box is rated to run a generator up to 40 K, so I am comfortable with that. As I progress with the project, I'll post pictures.

Thanks, :)
Rog
 
   / Building a new PTO driven generator #5  
if possible I would drive it was a gearbox. a little more expensive, but is HD and would last longer imo.

if it is 3600 rpm gen head with 540pto you would need a 6.66:1 ratio

1800rpm would be 3.33:1 with a 540 pto


If you know you have plenty of power on the tractor you could over drive it some to save fuel, say rounding up the ratio to the nearest whole number. I wouldn't over driver it much tho.
 
   / Building a new PTO driven generator #6  
i'd go gearbox as well
 
   / Building a new PTO driven generator
  • Thread Starter
#7  
20K portable generator finished and tested. Donor trailer for Generator Project 1.jpgGenerator project (1).jpgGenerator project (2).jpgGenerator project (3).jpgGenerator project (4).jpgGenerator project (5).jpg
 
   / Building a new PTO driven generator #8  
Very nice job.

How much did the whole thing cost, if I might ask?
 
   / Building a new PTO driven generator #9  
Very nice. I am working on parts for the same thing but i want to make mine a 3 point version.
 
   / Building a new PTO driven generator #10  
just catching your thread. NICE SETUP! was going to recommend a 3pt carryall

but guessing, you are wanting trailer version. to tow behind pickup, and take to were ever without hauling tractor with it, and use it on what ever tractor is at given area...

a Q. how much heat ya getting from the gen head? and do you think you will need to have some sort of fan on it, to keep it cool when you really start using the power from it?
 

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