PTO speed really needed?

DieselD · Sep 10, 2003

Most implements are made to run at or about 540 or 1000.
Diesels are happiest run wide open or very close to it.
PHD shouold be run fast enough to get the dirt out of the hole.
If its not diggin go faster, if it bounces ,slow it down.
When mowing. Get the correct HIGH rpm, then pick your land speed.
FEL work, 2000 rpms is usually good to leave some pedal to smash into the pile with more speed.
Flat out with loader work is sometimes tricky for some to control the stick without loosing the load or getting the tractor sitting on its nose.
Danny

MossRoad · Sep 10, 2003

Hey, Trev, does your tractor manual suggest anything about operating RPM's?

NIXON · Sep 10, 2003

Don't know about tractors. But Rhino and Woods suggest about 300 rpm max for their augers . seems to be reasonable as the Nh 865 skid steer we use at work(20" auger) drills better at moderate speeds as opposed to going full out .John

MossRoad · Sep 10, 2003

Here's a link to Woods' page on post hole diggers. Tractor PTO speed is listed as 540 RPM.

Is there gear reduction in the head or is it one to one ratio?

I couldn't find any more info on their website /forums/images/graemlins/frown.gif

JerryG · Sep 10, 2003

Most gear heads on PHD are in the 4:1 range.

Trev · Sep 11, 2003

</font><font color="blue" class="small">( Interesting question, Trev.

There have been some argum... er, uh,... lively discussions on this before /forums/images/graemlins/wink.gif. What does your owner's manual say about it?

My IH manual specifically states that my( not yours, not everybody else's, just my ) tractor should be run at PTO speed all the time to maintain proper pressure and lubrication. )</font>

Hi Moss,

My JD manual says to run at PTO speed also, but gives no reasoning behind it. I thought maybe it was just so the mower would cut better. Sounds like it's more complicated than that!

THanks,
Bob

shady1701 · Sep 11, 2003

it's all about fluid flow. Assuming transmissions use hydralic fluid to cool them if you run a lower rpm you won't have pump flow assuming it's pressure lubricated and it would in theory run hotter if you were loading it. same with engine and same theory behind hydro-stat's.

It's basicaly the same as a manual trans so assuming it's like in the ball part above 2000 rpm i'd assume it would be ok.

NIXON · Sep 12, 2003

Moss road ..
DoH!!! It's on the servis rhino page . www.servis-rhino.com
300 pto rpm max . I could have sworn I saw it on the Woods site as well . But then I'm getting brain fade a lot in my old age /forums/images/graemlins/smile.gif All the best, John