JD 5525 ePTO with pics

[Bob_Young]

Thanks, D., that second picture answers the question of the earlier thread.

E-PTO is a neat idea and I hope the competition catches on to it. One of the good things about diesels, as I understand, is that they pretty much burn just enough fuel to deliver the power demanded. A 90HP diesel doing work that only demands 50HP, will burn about the same fuel as a 50HP diesel doing the same work. So going smaller only saves the fuel that would be burned in hauling the extra weight of the larger tractor around. They're not like a gasoline engine that's highly dependent on a particular air/fuel mixture to run right and thus larger displacement at a given RPM automatically means greater fuel consumption, whether working hard or not.

Of course the demands of the new emission controls may mess this up. Don't understand how the geniuses behind controlling emissions can sacrifice fuel economy in the name of lowered emissions and view it as a net gain. This seems to be what's happened with the diesel pickups. May be a subject for a seperate thread.
Bob

 

[ddivinia]

Thanks, D., that second picture answers the question of the earlier thread.

Bob

No problem. I think we will see more economy saving items on tractors. I saw a receipt for 2007 for $2.55 a gallon for farm diesel. Man, that seemed high at the time but I would like to buy it for that now...

D.

 

[Dargo]

ePTO is a slick idea. As fuel prices rise, I think we all will be wondering how much power we really need. I bought a 4720 and I am beginning to think a 4120 probably would have done it.

D.

I don't have the big batwing like you have, but I've found that my tractor seems to turn everything I own just fine in the "e" setting. I really wondered about whether it would turn my big tiller at full depth while in "economy" mode, but it seems to do just fine. I only seem to need the full HP when doing heavy loader work.

 

[ddivinia]

I don't have the big batwing like you have, but I've found that my tractor seems to turn everything I own just fine in the "e" setting. I really wondered about whether it would turn my big tiller at full depth while in "economy" mode, but it seems to do just fine. I only seem to need the full HP when doing heavy loader work.

You are right. I can run pretty much all my smaller stuff on ePTO mode. Batwing requires full power. Baler also requires it.

I think the ePTO thing is a really slick deal. I bet we see it come out in more machines.

D.

 

[4720 OWNER]

So are you running your baler behind the 4720?

 

[ddivinia]

So are you running your baler behind the 4720?

No, the 4720 will be raking.

5525 will be cutting and baling. I am going to use a mower caddy so the 4720 could cut, but I like the safety of a cab.

Wife wants a 4720 cab for raking, etc...

D.

 

[wkpoor]

This PTO thing is not new. My 95 JD5400 has it also. Until I read this thread I never could figure out why there was 2 540 labels on the tach with several 100 RPM spread. Seemed to me PTO RPM would be linear with the engine.

 

[ddivinia]

This PTO thing is not new. My 95 JD5400 has it also. Until I read this thread I never could figure out why there was 2 540 labels on the tach with several 100 RPM spread. Seemed to me PTO RPM would be linear with the engine.

I have to throw a lever and it uses a different gear to engage the PTO shaft. Thus a different engine RPM will maintain the 540 RPM PTO output.

D.

 

[wkpoor]

I also throw a lever down to engage the PTO through its own set of gears. I noticed my tach does say 540e on the 1700RPM mark.