Pto generator

[Swblack1216]

I finally got to test my PTO generator bought it, not knowing if it worked or not anyway took you gurus advice and bought the digital meter. I it seems to be working fine. My question is in one picture I have it running with the tires off, which puts it level and a straight line with my tractor, the other picture shows it with the tires on would that be bad to run it like that? Any advice is appreciated as always you guys are great TIA.

 

[Sawyer Rob]

It's recommended to have the PTO shaft straight.

It requires more power to run the generator with the shaft angled.

SR

 

[RjCorazza]

They also wear out faster at higher angles. One of my implements came with a chart in the manual describing the shaft life at various angles, and it was an eye opener.
I think I would get some smaller wheels, or back the generator into a dug out area of it's going to be used in a specific place.

 

[workinonit]

I don't disagree with Rob. However I wouldn't take the wheels off to run it. What you might do is find some smaller wheels for the trailer.

 

[workinonit]

They also wear out faster at higher angles. One of my implements came with a chart in the manual describing the shaft life at various angles, and it was an eye opener.

Those aren't really bad angles. I run PTO implements all the time with worse angles than that.

 

[Smokeydog]

What you get with angle driveshaft is some output oscillation on voltage. U-joint driveshaft is not constant velocity. Winco recommends <5 degrees angle from straight.

My 3pt mounted generator was oscillating being offset slightly to one side. Centered and output returned to steady.

Smaller wheels, change axle configuration, convert to 3pt mount, many solutions.

 

[ruffdog]

I would find a pair of small wheels/tires for a small trailer or golf car.

 

[alwaysworking]

Plus one for finding smaller wheels. That looks like an old winco genny, they are of great quality.

 

[TerryR]

Smaller wheels wouldn't help the angle at the generator unless the tongue is modified to lower the front end of the cart.

 

[Swblack1216]

They also wear out faster at higher angles. One of my implements came with a chart in the manual describing the shaft life at various angles, and it was an eye opener.
I think I would get some smaller wheels, or back the generator into a dug out area of it's going to be used in a specific place.

I have other wheels, but the hope is too big, those Are a strange size bolt pattern and cone shape. I think I will just run it with the wheels off. I have a spot where I'm gonna be running it. Just trying to get ready for the zombie apocalypse

 

[RjCorazza]

Our of curiosity I found the shaft life estimate table I recalled. It is from Helm Welding (manufacturer of Luck Now blowers).

Certainly not the "end all" in source material, but noteworthy nonetheless. The chart is based upon a 60hp load, which is likely twice the HP that we are discussing here.

My WinCo generator recommends a pto angle of less than 10 degrees. I measure the op's at between 11-12 degrees.
For an implement that could be run for hours on end, I think getting the pto shaft level (or closer to it) is important.

 

[ruffdog]

^^^^...and remember to have both u-joints at the same angle.

 

[zzvyb6]

Smaller tires certainly may help, but only if the tractor pto shaft and the generator input shaft are co-linear (as in horizontal in the side view is typical). Doesn't have to be co-axial (they all line up in a straight line). This presumes the internal U-joint yokes also line up and are not themselves at a rotary angel relative to each other. A 90 degree mismatch used to be common but nowdays most shafts are designed so that they can't be improperly connected. As such, the driveline will be 'constant velocity', because the internal rotary phase angles cancel each other out.

In other situations (for example my Kuhn combo tedder & rake), the rotor support bar does not ever establish these requirements, as it changes position depending on raking or tedding. So, it has to have a true 'constant velocity' joint. Mine broke, so I made one from a FWD car outboard driveshaft joint. Works wonderful.

One other example for driveline requirements is on equipment such as a small square baler. The intermediate shaft connecting the tractor pto to the fixed position baler driveline must be set up so that the hitch pin is exactly 1/2 way between the tractor and baler connections. Going straight is not a problem (like the generator setup). But when you make a turn with the baler and the 1/2 way point is not installed, then secondary oscillations result from the unequal angles and will make both machiines vibrate dramatically and in the worst cases, stretch & break the drive chains or worse: damage the tractor pto gears and the baler gearbox, too.

When you see lifted pickups on the side of the road with their prop shafts dangling on the ground, it's usually because they failed to obey the rule of co-linear input and output shafts, plus the cheezy springs they use allow the rear axle pinion to go nose up or down during heavy acceleration, disrespecting the equal angle rule, and this will break the joints andor driveshaft eventually.

This is a first year Engineering Mechanics course topic if you go to a real school, and skip the History of French Literature classes.

 

[Gee Ray]

If the op has a longer pto shaft from another piece of equipment then he could extend the tongue and reduce the angles of the pto.

Fabricate a drop hitch to place on the drawbar once the set up is at its location and drop the front of the generator making the pto shaft straighter. At the same time keeping the generator and the tractor aligned.

Another idea would be to put some wood planks on the ground and pull the rear wheels onto the planks. Leaving the front tires on the ground.

 

[workinonit]

You guys make connecting and running a PTO shaft so complicated he may sell the generator.

 

[ptsg]

You guys make connecting and running a PTO shaft so complicated he may sell the generator.

Indeed.

 

[newbury]

And a lot of us would want to buy it!

 

[LouNY]

You do have a considerable angle on the pto shaft.
But, it will work that way for a long time.
If you are going to have a permanent or semi-permanent spot to use it and you can get the generator lower while keeping it in plane with the tractor it would be better.

 

[Swblack1216]

Our of curiosity I found the shaft life estimate table I recalled. It is from Helm Welding (manufacturer of Luck Now blowers).
View attachment 828876
Certainly not the "end all" in source material, but noteworthy nonetheless. The chart is based upon a 60hp load, which is likely twice the HP that we are discussing here.

My WinCo generator recommends a pto angle of less than 10 degrees. I measure the op's at between 11-12 degrees.
For an implement that could be run for hours on end, I think getting the pto shaft level (or closer to it) is important.

Thanks I left the wheel off built a shed around.

Our of curiosity I found the shaft life estimate table I recalled. It is from Helm Welding (manufacturer of Luck Now blowers).
View attachment 828876
Certainly not the "end all" in source material, but noteworthy nonetheless. The chart is based upon a 60hp load, which is likely twice the HP that we are discussing here.

My WinCo generator recommends a pto angle of less than 10 degrees. I measure the op's at between 11-12 degrees.
For an implement that could be run for hours on end, I think getting the pto shaft level (or closer to it) is important.

You do have a considerable angle on the pto shaft.
But, it will work that way for a long time.
If you are going to have a permanent or semi-permanent spot to use it and you can get the generator lower while keeping it in plane with the tractor it would be better.

Yes That is what I thought found a spot near my panel.still have to finish