Best way to shut down PTO with wood chipper

[RickB]

Another TBN thread having all the relevant information in posts #1 - #5 followed by pages of garbage.

Get over yourselves.

 

[Garandman]

Nothing cute or funny about cruelty to animals.

So you're a vegetarian?

I joined PETA myself! But I'm confused, I think. The PETA I belong to is People Eating Tasty Animals.

 

[RoyJackson]

Anyway...to get back on track...
The PTO should be engaged and disengaged at a low RPM (idle or a bit above) for any powered implement.
Less stress on the tractor and the powered implement.

 

[jenkinsph]

Anyway...to get back on track...
The PTO should be engaged and disengaged at a low RPM (idle or a bit above) for any powered implement.
Less stress on the tractor and the powered implement.

I would add to raise and lower the rpm slowly too.

 

[roadhunter]

The best way to shut down a PTO chipper is when you are finished with the job! I am not clear as to the real benefits of worrying about what RPM you are at when you disengage the PTO. Regardless of the speed when the PTO is disengaged it will slowly slow down.

roadhunter
I was helping a friend with some light duty chipping and using my D.R. belt driven chipper on his 2305 JD (electric PTO). When we finished, he shut down the PTO and immediately "smoked" the drive belt on the chipper, badly enough it had to be replaced. I hate this type of engagement feature[/QUOTE]

I am unclear how disengaging the PTO would cause the belt to get "smoked" unless your pto does not spin freely when disengaged.

I operate a belt driven chipper 5-6 times per day almost every day and have never had that happen. Once the PTO is disengaged it spins freely so it would offer no resistance to the belt, thus no damage to the belt.

For what you are describing happening to occur the PTO would need to require force to spin which theoretically could cause resistance and the belt could slip as the chipper powered the belt faster than the "stiff" pto would turn. Does you PTO sin freely when disengaged?

For what you are describing would be more likely the symptom of turning the engine off without disengaging the pto where the chipper was effectively driving the tractor engine via belt drive. That certainly sounds more likely as a way to burn up a belt.

I burn them up pretty regularly but that is because my old Farmall has throttle control and she stays the same speed no matter what happens to the chipper, even if it jams LOL. FYI old tractors with throttle control work great for chippers because they maintain the same speed when the load changes. Modern foreign tractors do not have this feature and simply bog down and the fuel stays the same.

 

[jenkinsph]

roadhunter
I was helping a friend with some light duty chipping and using my D.R. belt driven chipper on his 2305 JD (electric PTO). When we finished, he shut down the PTO and immediately "smoked" the drive belt on the chipper, badly enough it had to be replaced. I hate this type of engagement feature

I am unclear how disengaging the PTO would cause the belt to get "smoked" unless your pto does not spin freely when disengaged.

I operate a belt driven chipper 5-6 times per day almost every day and have never had that happen. Once the PTO is disengaged it spins freely so it would offer no resistance to the belt, thus no damage to the belt.

For what you are describing happening to occur the PTO would need to require force to spin which theoretically could cause resistance and the belt could slip as the chipper powered the belt faster than the "stiff" pto would turn. Does you PTO sin freely when disengaged?

For what you are describing would be more likely the symptom of turning the engine off without disengaging the pto where the chipper was effectively driving the tractor engine via belt drive. That certainly sounds more likely as a way to burn up a belt.

I burn them up pretty regularly but that is because my old Farmall has throttle control and she stays the same speed no matter what happens to the chipper, even if it jams LOL. FYI old tractors with throttle control work great for chippers because they maintain the same speed when the load changes. Modern foreign tractors do not have this feature and simply bog down and the fuel stays the same.[/QUOTE]


Most modern tractors today have a pto brake which engages when you shut it off. Primarily for safety measure and lawyers.

I have a DR pto chipper also and use it with my x749 mower. If I idle down slowly the chipper slows down an slipping the belt is reduced enough not to be a problem.

 

[Patches]

What you're describing is exactly correct; but if you shut the PTO off at it's rated 540 rpm, which is what he did, the PTO brake operates and the chipper continues at 540 which results in "smoke"

 

[CobyRupert]

Like the saying goes:

"Geez, you can't swing a dead cat around in here without hitting someone that gets offended." :laughing:

 

[roadhunter]

What you're describing is exactly correct; but if you shut the PTO off at it's rated 540 rpm, which is what he did, the PTO brake operates and the chipper continues at 540 which results in "smoke"

Interesting . Never heard of a PTO brake. There certainly isn't one on my 54 Farmall or my JCB. I used to run a PTO fence post peeler off both and it would take several minutes for it to slow down once the PTO was turned off. Clearly there was not brake slowing things down.

What prevents the PTO brake from smoking the belt when you shut off at say 400 rpm instead of 540 rpm?

 

[roadhunter]

After reading about this I do not think I would ever want a tractor with a PTO brake/clutch safety mechanism. Sounds like one more thing to break and in reality it serves no purpose from what I can tell.

From another tractor site

from what I can tell an have been told there is a clutch pack inside the diffirential houseing that is applied
by hydralic pressure causeing the pto to run . When you move the lever to disengauge hydralic pressure is applied to an brake which stops the pack an
holds there .

Our own Soundguy
That's why i sometimes run ORC's on machines with independent pto's to save the brake.


I am 100% convinced that if you have a pto clutch slowing the engine down as much as possible is the way to shut down. If you do not have a PTO clutch I do not see slowing down as necessary but for overall safety it is probably the better way to to.


I appreciate the education.