Mowing Pto speed brushhogging

[Depmandog]

The weeds you are cutting look pretty mild, not super thick or tall. Unless that field is rougher than a cob, I would be rolling along quite a bit faster than what your speedo shows...probably at 4-5 mph.

Entirely your choice of course. I am only commenting. If she starts to run hot, or bogs down, drop down a gear or two. I like the little bit extra breeze, but only if its a smooth ride

Nice looking tractor by the way!

 

[Gale Hawkins]

If the cut looks good and the discharge is not clumping one can run the speed he wishes is my view. In 6" diameter trees you need 540 RPM.

 

[7879fordman]

Ya the pic in that spot look milder than it is . It would bog running at 2300 engine rpm / 540 . In 3rd low . Would have to drop it to second gear . One section I would have drop to 1rst low . But it was 4-5 tall and a wet stop so the grass there is tough .

The many thing I was worried if I had it wound up to far . But from all the comments . Looks like 2300/540 is not to high .
This is the heavyset stuff I had tried it on . The other was short and I just cut it super low . But only ran at about 1500 engine rpm . And like 2 high . But like said it was a foot high . .

But looks I'm good .

Thanks again guys .

And as for as the temp. It's got no higher that right in the middle .

But it's seems its going to be a fuel hog . But I'm used to the fuel sipper mf 135 .

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[DT86]

And as for as the temp. It's got no higher that right in the middle .

My M9540 has never bothered to run above that mid level either, no matter how hard I'm using it. It really surprised me because I was used to having to give our old tractor a breather every once in a while.

 

[CobyRupert]

ive always ran my pto at 1800 to 2000rpms .never have i ran it at full 540 pto speed.

Isn't it easier on the PTO clutch if you start it a low rpms under no load and then bring the PTO up to speed?

 

[7879fordman]

Well my mf 135 never runs hot hot but if it does run hoter than its normal it means you need to clean the radiator and its screen . Because they will be clogged with dust and debris. a water hose washout than ya good to go tell its dusted up again . Brushhogging it gets more dust and debris .

But so far I'm happy with the m7040 .

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[7879fordman]

Isn't it easier on the PTO clutch if you start it a low rpms under no load and then bring the PTO up to speed?

Ya i always do that even with the old mf 135 .

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[Pharm]

I've been running mine at full PTO speed with the MX 5100 or slightly lower.

One thing I've noticed with the Kubota that I've never noticed on my Massey Ferguson is heat coming off the transmission housing. After mowing some admittedly thick weeds for about an hour or more I can really feel that heat coming off the transmission. Trans. oil level looks fine and engine temp. looks ok as well. I know I'm sitting a lot closer to the machinery on the Kubota but it does get a lot hotter in the seat than I would like. Anybody else notice that problem?

 

[7879fordman]

I've been running mine at full PTO speed with the MX 5100 or slightly lower.

One thing I've noticed with the Kubota that I've never noticed on my Massey Ferguson is heat coming off the transmission housing. After mowing some admittedly thick weeds for about an hour or more I can really feel that heat coming off the transmission. Trans. oil level looks fine and engine temp. looks ok as well. I know I'm sitting a lot closer to the machinery on the Kubota but it does get a lot hotter in the seat than I would like. Anybody else notice that problem?

I noticed the same thing that it was way to hot . Can't see how a cab tractor could cool the inside . It was about 92 when I was doing this also but I could really tell the heat difference .

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[Gale Hawkins]

Well an old 135 MF was built for grunt work in its day. What type transmission does the Kubota have. If it hydro static you have a lot of slipping going on.

 

[7879fordman]

Mine I hope is not slipping with only 15 hours . My is the 8x8 with hydro shuttle . Dont really think mines out of spec it's just a little warm than I'm used to .

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[94BULLITT]

I noticed the same thing that it was way to hot . Can't see how a cab tractor could cool the inside . It was about 92 when I was doing this also but I could really tell the heat difference .

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You have to run the a/c on a 40* day. The a/c works good on the 4240 on 90*+ day.

I did some bush hogging for a guy on his tractor one time. It did not have a cab. When I got done my feet felt like they were on fire. I don't know where the heat was coming from.

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[Gale Hawkins]

Mine I hope is not slipping with only 15 hours . My is the 8x8 with hydro shuttle . Dont really think mines out of spec it's just a little warm than I'm used to .

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I did not word that correctly. Any hydro feature may produce more heat than a direct drive like on the 135 MF.

 

[7879fordman]

Gale ya had me scared there

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[Pharm]

The only thing I've used until I got my Kubota was my MF 1080 which is quite a bit bigger than my MX5100. The Kubota is a gear drive with about 27 hours on it and I've only noticed the heat in the seat when I'm bush hogging some thick, high grass.

I like the Kubota but I think I'm keeping my MF for bush hogging, I can use a bigger cutter and cut at a pretty fast clip. The Kubota is great for areas where I need a little more maneuverability - and will still do the job when I'm working on the MF ... which seems to be more and more these days.

I just was hoping for a little more coolness in the seat - especially since I put a canopy on the tractor.

 

[mkane09]

I've got a MX4700 with LP 6' mower. Cutting a light or medium load, I run the tractor about 2400 rpm, but if the field is thick and tall about 2600-2700 rpm. It definitely makes a difference when the load gets higher to run the mower closer to 540 rpm (tractor at 2700 rpm).

mkane09

 

[RedNeckRacin]

They design the cutter to be worked at 540 rpm. Whats so hard to understand about that? Do you only drive your car at 1500rpms to get better life out of it? No thats silly. You drive at a sensible speed and get your desired results. you drive faster if you are in a hurry and want to get there (i.e. done faster) you drive a little slower and take things easier to put less wear and tear on the vehicle (maybe last longer) but you certainly dont watch your rpms because you might wear out the engine sooner in a car. The tractor motors we are dealing with are much much stronger yet we treat them with kid gloves. The machine was built to do work. If you don't need all the hp that the 540rpm gives you, pickup a gear and mow faster. If you are REALLY concerned about it, some machines (deere for instance since this is the only one I am aware of and I just realized this is a kubota forum, oops) has an e-pto option to get 540(!!!!!!) pto rpm at a lower engine speed.



/rant

 

[deathtoblackberries]

I can tell you my new Landpride 50" reverse tine tiller and tractor is a lot happier at 2,000 rpm than full throttle in my soil.

 

[Gale Hawkins]

What ever engine RPM that gives 540 PTO RPM typically is max RPM to run the engine for best long term results.

That is about 1800 engine RPM on the 800 Fords I grew up with and the same for our 265 MF i was cutting with today. As long as I stayed over 1000 engine RPM it was cutting OK but if the ground will permit I got WOT. My late FIL adjusted the linkage so 1800 was max RPM and I have not messed with it since the kids are starting to use it some.

 

[avc8130]

I'm doing my annual "spring" brush hogging, and I definitely like the tractor running at 540 pto rpm. The cutter works better at the rated speed, the tractor is more responsive and doesn't labor as much. Everything is better at the rated rpm.

ac