Rear PTO Speed

[Roadkill95]

What is the purpose of 2 speed rear PTO? I see 540 seems standard and then I see B7610 and B7510 also have 940 or 960 can't remember. What would the higher speed be used for and does it have the same HP @ that higher speed?

 

[rbargeron]

There are situations where having different available pto speeds can be useful. On jobs that require less torque, higher-speed pto gearing lets you run the engine at lower rpm, while maintaining implement speed. My tractor has a bigger engine than is sometimes needed, so the high speed pto setting is used for several kinds of mowing - the engine can run down at 1700 or so with less noise, heat, wear - even a little less fuel. Some implements are designed for the higher input speed - although not commonly available in the U.S. I believe haying equipment in Australia & New Zealand is designed for higher input speed.

 

[Roadkill95]

Maybe I could mount a giant fan on it so it will cool me while I shovel because if I buy a B7610 there won't be a hoe for a while

 

[rbargeron]

I like the fan idea.

Back on your question about horsepower, the HP is the same at either speed, but the available torque is less at the higher speed - its directly proportional.

This is actually a favorite subject of mine - there's a thread about adding a 2-speed pto to my tractor here.

 

[KennyV]

Dick…
Your 2 speed upgrade looks as interesting today as it did back then… WoW can it really be 5 years ago… Thanks again for an interesting post… if I had more than 45 HP I would look into parts for the same thing. KennyV.

 

[Soundguy]

Lotsa tractors have different pto speed options.. the jap variety sometimes have 3-4 speeds. I've seen specialized tool like tillers and such use th higher speed.. especially on the yanmar units.. etc..

Soundguy

 

[rbargeron]

Dick…
...........as it did back then… WoW can it really be 5 years ago… .

Geesh - I wouldn't have guessed that either - seems like a couple months ago. I better get working on something new....