Hydro vs Power Reverser

[jeffinsgf]

Might as well give up, John. There's a huge segment of the contributors to this forum that will never accept that these small diesel engines are designed to run at full throttle. It's been that way for the 5 or 6 years I've been a member. Apparently the manufacturers and engineers don't know what they're talking about.

 

[jenkinsph]

Might as well give up, John. There's a huge segment of the contributors to this forum that will never accept that these small diesel engines are designed to run at full throttle. It's been that way for the 5 or 6 years I've been a member. Apparently the manufacturers and engineers don't know what they're talking about.

I run mine faster than I used to but my 110tlb fel is so fast I have a hard time controlling it above 1800 rpm. On the 4520 I use the auto throttle most of the time and can leave the engine throttle at 1200 rpm. Wish the 110 had the upgraded cruise that the 4520 has.

You are correct that these small diesels are made to run at faster rpm's than the older engine designs. I suspect too much low speed idling causes more problems than some people know.

 

[om21braz]

You are correct that these small diesels are made to run at faster rpm's than the older engine designs. I suspect too much low speed idling causes more problems than some people know.

+1 The engines that are used in the JD 4x20 machines are also in skid-steers, generators, pump power packs, etc. - many applications that run WOT most of the time they are running.

 

[beenthere]

Hey guys-looking for an opinion. ........Having said that would I get another hydro or go for a power reverser? I've had a 755 and the 3320 hydro and they have been trouble free. But I hate the slow loader hydraulics-at least with P'Reverser you could throw it in neutral, hit the throttle and improve your loader cycle time.

Sure would be nice if Deere could engineer a driveline disconnect on a Hydro like on a big machine so you could speed up loader operation but I guess that is wishful thinking.

Any opinions?

I see little to no difference in FEL function (speed) with my JD4300 and engine RPM.

I'd not think twice about going with hydro tranny. It is similar to the old decisions of stick shift vs. hydro tranny in the trucks/cars years back. If you like an extra hand free, then go with hydro. Leave the RPM up and get R dun.

 

[beenthere]

Guys-........... Now I understand there is a new hydro option that has a foot throttle and a forward /reverse lever on the instrument panel-like a power reverser-but guess what?? They put the brake pedal on the right side and no individual brakes!!! Not something I would ever want.

Then stick with Deere. They have individual brakes useable along with the hydro pedals forward and another for reverse.

Should have no complaints then.

 

[wolc123]

I use my P/R 4120 for snowplowing over the winter. One thing I really like about the P/R transmission in the extreme cold is that it is ready to go at startup no matter what the temperature is. This morning it was -10 and there was no "sluggishness" at all in the transmission. I knocked out the 3 ft drift at the end of a driveway in under 2 minutes and had the tractor back in the barn in 5 minutes. Surely a hydro transmission would have not been close to warmed up in that time (I did have the block heater on for an hour to warm the engine). I know that my lawn tractor (hydro) is very adversley affected by cold temperatures and gets very sluggish when it is cold. There is no way I would want to deal with that over the winter. Unless you are going to keep the tractor is a heated garage, I would recommend going with the P/R for winter use. The multiviscosity hydraulic oil JD puts in the machines these days is a lot better than the stuff used years ago, but the loader hydraulics are still noticably slower in the extereme cold temps. For me at least, loader cycling dont slow me down nearly as much as a sluggish transmission would.

 

[kjung17]

Wolc,
The oil in your hydro mower is actually thinner than the oil in your P/R, unless you run Low-visc in your tractor. The trick is pressure and volume. Both the loader and the hydro rely on high volume and pressure, whereas the P/R uses <200psi to fill a relatively small piston. Great transmission.

 

[JD955SC]

Might as well give up, John. There's a huge segment of the contributors to this forum that will never accept that these small diesel engines are designed to run at full throttle. It's been that way for the 5 or 6 years I've been a member. Apparently the manufacturers and engineers don't know what they're talking about.

I love engines that agree with my inner Ricky Bobby.

 

[kjung17]

LOL. Drive it like you stole it.;-)

 

[JD955SC]

LOL. Drive it like you stole it.;-)

Oh I do. Everyone knows to stay the **** out of my way when I'm behind the wheel of anything.

During the last snow/ice storm down here, I was doing powerslides with tractors. Fun times.