Jimna 1000 RPM or 540 PTO Speed for Mower
bogman
Join Date: Aug 2010 Posts: 106 Bogalusa, La. |
2012-02-06 182298
On my JM 200, there is a lever between the raise/lower hydralic lift and the engage/disengage lever for the pto. It also has the en/dis letters on it. What does this lever do?
Also is it better to mow with a finishing mower in the 1000rpm range or the 540? I can see where faster should be better, but if 540 gets the job done why not use it?
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Jimna 1000 RPM or 540 PTO Speed for Mower
kthompson
Join Date: Oct 2005 Posts: 5275 South Carolina Pics |
2012-02-06 182299
I am assuming the EN is for engage and the DIS is for disengaged.
What speed PTO to use, simple the one the pto equipment is made to use. If made for 540 then use it and my guess is you will find your mower is made for 540 if a 3 pth mower.
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Jimna 1000 RPM or 540 PTO Speed for Mower
bogman
Join Date: Aug 2010 Posts: 106 Bogalusa, La. |
2012-02-06 182302
Hi KT, I'm talking about another lever between the lift and pto levers.
I got this mower from a neighbor whose father died and he didn't want it. He has no idea what the operating speed should be. ....
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Jimna 1000 RPM or 540 PTO Speed for Mower
greg_g
Join Date: Jan 2004 Posts: 1816 Western Kentucky Pics |
2012-02-06 182304
Unknown lever should be for the differential lock. Never use 1000 PTO position unless it's specified by the implement manufacturer.
//greg// ....
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Jimna 1000 RPM or 540 PTO Speed for Mower
kthompson
Join Date: Oct 2005 Posts: 5275 South Carolina Pics |
2012-02-07 182306
Bogman, have you looked carefully on the mower even the gear box for a speed? Do you know the brand of mower and model and is it rough cut or finish mower. My experience being limited but think it will be a 540 rpm mower. What 1,000 RPM equipment "I" have seen are in 100 hp and up range. ....
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Jimna 1000 RPM or 540 PTO Speed for Mower
auerbach
Join Date: Sep 2007 Posts: 2168 West of Toronto Pics |
2012-02-07 182307
Except for the occasional antique, North American turning implements are designed for 540. Faster speeds (for specialized attachments such as paddy frothers in Asia) invite damage and injury.
Besides locking it into 540 if your tractor has options, you should try to find out what engine speed gives 540rpm at the PTO. ....
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Jimna 1000 RPM or 540 PTO Speed for Mower
Murf
Join Date: Dec 1999 Posts: 7249 Toronto Area, Ontario, Canada Pics |
2012-02-07 182314
While I'm not necessarily advocating it for anyone else, we used to use the 1,000 rpm setting with 540 rpm equipment that had very low power requirements like mowers cutting very little or blowers, but only did so with the engine rpm's lowered to the point where the rpm's were still only 540 at the output.
This allowed the engine to be run at far lower rev's while still making 540 rpm at the PTO shaft.
Best of luck. ....
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Jimna 1000 RPM or 540 PTO Speed for Mower
bogman
Join Date: Aug 2010 Posts: 106 Bogalusa, La. |
2012-02-07 182319
Thanks guys for the input. Murf hit on what I was getting at. You ought to be able to save fuel running at lower engine rpms with the 1000 rpm pto setting.
But aren't you supposed to keep the engine rpms in the green area?
This finish mower was a Woods L59 belly mower that originally was powered by a big 15" belt pulley that fit directly on the pto shaft with a long belt that ran down and under to the mower deck.
It has since been modified to a 3 pt. hitch configuration by the use of a gearbox off an old bushhog with the 15" pulley under the gearbox driving the pulleys on the mower deck.
So Greg you would engage that lever in a case where you were pulling something heavy and one of the wheels started spinning? ....
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Jimna 1000 RPM or 540 PTO Speed for Mower
Murf
Join Date: Dec 1999 Posts: 7249 Toronto Area, Ontario, Canada Pics |
2012-02-07 182320
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I think the 'green area' you're talking about must be a mark on the tach, if so that's a guide to tell you what rpm's the engine must be doing to get you proper PTO speed.
However, if 2,400 engine rpm (in our case) gives 540 PTO rpm, then on the 1,000 rpm setting about 1,300 rpm on the engine would be 540 rpm at the PTO.
Just be very carefull not to too overload the engine, lugging it will be hard on it and the PTO clutch.
Not to speak for Greg, but yes, the diff. lock makes both wheels turn at the same time regardless of traction. Not much good for turning a corner, but great for helping you out of a sticky spot.
Best of luck. ....
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Jimna 1000 RPM or 540 PTO Speed for Mower
greg_g
Join Date: Jan 2004 Posts: 1816 Western Kentucky Pics |
2012-02-07 182321
Quote:
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//greg// ....
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Jimna 1000 RPM or 540 PTO Speed for Mower
greg_g
Join Date: Jan 2004 Posts: 1816 Western Kentucky Pics |
2012-02-07 182322
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You don't even have to be pulling anything to occasionally need the diff lock. If you're using a front loader, engaging the diff lock to push into a pile is much preferred over 2wd operation (the 200 Series Jinma has a notoriously weak front end). But if you're simply in the mud and a rear starts to spin, try engaging 4wd first. Only if that doesn't pull out out do you really need to engage diff lock. And remember it's important to keep the steering wheel in a straight line with diff lock engaged. Trying to turn a corner without disengaging diff lock can cause significant internal damage.
//greg// ....
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Jimna 1000 RPM or 540 PTO Speed for Mower
Murf
Join Date: Dec 1999 Posts: 7249 Toronto Area, Ontario, Canada Pics |
2012-02-08 182330
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A blower only takes ~5 hp and a finish mower cutting the way you're supposed to, cutting no more than ~1/2" off the top will run just fine on ~10 hp.
But then again I did preface my comment with "While I'm not necessarily advocating it for anyone else.....".
Best of luck. ....
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Jimna 1000 RPM or 540 PTO Speed for Mower
greg_g
Join Date: Jan 2004 Posts: 1816 Western Kentucky Pics |
2012-02-08 182332
Well, I'll be the first to admit that I don't know anything about Canadian mowing practices. But if I were to only take "1/2" off the top", I'd be mowing every other bloody day !! Perhaps with a push mower on a retirees postage stamp lawn. Or a rich guys personal putting green. But it's hardly consistent with pulling a grooming/finish mower behind an agricultural tractor.
//greg// ....
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Jimna 1000 RPM or 540 PTO Speed for Mower
bogman
Join Date: Aug 2010 Posts: 106 Bogalusa, La. |
2012-02-08 182335
Thanks again for all the help guys.
I don't mow every other "bloody" day either. :-)
I love the Kings English. :-) ....
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Jimna 1000 RPM or 540 PTO Speed for Mower
Murf
Join Date: Dec 1999 Posts: 7249 Toronto Area, Ontario, Canada Pics |
2012-02-08 182336
Do a little reading, it's considered the best for the health of the turf itself, as well as the appearance it, to cut when the 'clip' (the piece removed) is no more than 1/3 of the total blade.
If you are mowing to keep the turf at 2" then you would be cutting less than 0.6" off at each cut.
As an example we cut 200+ acres of turf fields and they are cut to 1.5" and the 'clip' at each cut is 0.35" - 0.5" long. We run 16' reel style mowers behind 30 hp tractors and they're hardly working.
Best of luck.
....
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Jimna 1000 RPM or 540 PTO Speed for Mower
greg_g
Join Date: Jan 2004 Posts: 1816 Western Kentucky Pics |
2012-02-08 182338
Ah, you're a sod farmer. Never knew that before. It puts your 1/2" clip into a different perspective.
//greg// ....
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Jimna 1000 RPM or 540 PTO Speed for Mower
Murf
Join Date: Dec 1999 Posts: 7249 Toronto Area, Ontario, Canada Pics |
2012-02-08 182339
Turf farmer or keeper of the front lawn, doesn't matter one iota, you should never cut more than 1/3 of the length of a blade of turf grass. In warm climates or during peak growing times especially so.
If you want that nicely manicured look to the turf and want to do the best you can at keeping the weds out the 'proper way', by making the grass so thick the weeds don't stand a chance, you should be cutting no more than 1/4 of the blade each cut.
Even if you keep the turf fairly long, say even 3", at 1/4 per cut that would still only be a 0.75" clip coming off.
The more (percentage) of the blade you cut each time the harder it is on the grass. It also means the mulch left behind is longer and will build thatch instead of breaking down.
Best of luck.
....
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Jimna 1000 RPM or 540 PTO Speed for Mower
DennisCTB
Join Date: Nov 1998 Posts: 2707 NorthWest NJ Pics |
2012-02-08 182340
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What is your preferred way or combination of ways to make the grass so thick that weeds don't stand a chance? ....
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Jimna 1000 RPM or 540 PTO Speed for Mower
richwaugh
Join Date: Mar 2010 Posts: 96 |
2012-02-08 182342
Wow! I suppose that may work okay up north, but down here in the tropics, it surely won't. Each week in the winter months and twice a week in the summer, I mow about 9 acres of what we call lawn, and it takes about 6 hours on a 48" riding mower. In that interval it has generally grown to twice its height or more. If I was going to be just taking a 1/2" off the top, I'd never get off the mower.
You understand, our local (or imported and naturalized) grasses grow anywhere from 3" to 6": in a week and one particular nasty species of rough grass will grow as much as 3" per day after good rain. This ain't exactly what you guys call turf, I suppose. ....
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Jimna 1000 RPM or 540 PTO Speed for Mower
greg_g
Join Date: Jan 2004 Posts: 1816 Western Kentucky Pics |
2012-02-08 182345
I agree with Rich. At some point science has to bow to reality or practicality - or both. Besides, you're grooming a product with the goal of making as much money for you as possible when you market it. Tree farms/nurseries also use growing techniques geared toward profit. but out here where the dumbass consumers live, our main concern is how to most conveniently and economically keep it alive after we buy it.
But assuming none of us want to waste any more of the OPs time, I'll try to get back on track by repeating my original recommendation to never use the 1000 RPM capability of his 20hp Jinma - unless/until he's conforming to mower manufacturer written recommendations.
//greg// ....
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Jimna 1000 RPM or 540 PTO Speed for Mower
bogman
Join Date: Aug 2010 Posts: 106 Bogalusa, La. |
2012-02-09 182365
Your not wasting my time, I love reading what you guys post.
I will keep it in the 540 position.
Years ago I ordered a few plugs of grass called "zoysia" or something like that. It was supposed to grow in shady areas and in hard soil. It has now spread to cover about a 30'x100' area. It dosen't ever get too high. The St. Augustine and Centipede doubles or triples its height every 10 days.
The zoysia never gets dollar weed but the rest of the lawn does. Now I know why. It's so thick the dollar weed won't grow.
But I'm still not gonna mow evey other Bloody day. :-) ....
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Jimna 1000 RPM or 540 PTO Speed for Mower
greg_g
Join Date: Jan 2004 Posts: 1816 Western Kentucky Pics |
2012-02-10 182377
I wasn't so lucky. I ordered a few hundred plugs of the stuff for the same reason; thin native grass in shady areas. When I opened the box it looked dead. Dry as kindling. But I planted it anyway. Nothing. Apparently it DID arrive dead. Needless to say, I didn't bother throwing good money after bad. Never ventured into Zoysia territory since.
//greg// ....
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Jimna 1000 RPM or 540 PTO Speed for Mower
richwaugh
Join Date: Mar 2010 Posts: 96 |
2012-02-10 182378
That stuff grows like a weed down here! The only drawback is that in a year-round growing season it WILL get high- over a foot and build a mat of interlinked fibers that area bear to mow. Mowing after it has gotten tall like that can severely harm or kill it, too. If you figure out the right mowing schedule and height (about 3" here) the stuff is dandy. It will ultimately choke out anything else, too.
It does require that your mower blades be *as sharp as possible*, though, or it will snag and tear out, rather than cut. Then you have patches that are dead brown until regrowth fills in. I think, though I have no way to test it, that a reel mower might be the best for zoysia, due to the clean cutting action. ....
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Jimna 1000 RPM or 540 PTO Speed for Mower
kthompson
Join Date: Oct 2005 Posts: 5275 South Carolina Pics |
2012-02-12 182392
Not a turf expert at all. We did have centipede at previous house and it is most popular here for reason it grows slow and does decent job covering. The seed heads will get a few inches high but never seen leafs even three inches high.
We went with Zoysia with current house this year will be 12 years back. To begin with there are many varieties of Zoysia. We are fortunate enough to visit a Super Sod farm and they had small plots of several different grasses and a few different Zoysias. The fine ones do require reel mower but the variety we went with (not sure the name now) looks a lot like Centipede but grows in more areas than it does and taller and faster. It has not taken the full lawn and we still have weed grasses (part of our lawn was old field and part was woods)that will grow fast but not over three inches a week even with our heat and normal rain. Yet even the Zoysia in prefect conditions will grow fast enough it would need to be cut at least twice a week if done proper. Oh we do use rotary mower on our Zoysia and the reason we went with the variety we did.
In my part of the world the lowest maintance is by far Centipede and they are cut weekly even by the pros. When even our heat hits or it goes without rain two weeks is freguent enough to meet Murf's recommendation. Now if you want to keep the thickest lawn and love the mower use a Bermuda, think 3 days is recommendaiton between mowings.
Our state has great info on trufs though our county agents and the better truf farms.
One thing do want to point out, it is my understanding there is a lot of difference between the lawn turfs in even Tenn due to climate and the western part of our state also is vastly different than the grasses nearer the ocean. A great lawn to me is really a local issue.
....
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Jimna 1000 RPM or 540 PTO Speed for Mower
richwaugh
Join Date: Mar 2010 Posts: 96 |
2012-02-12 182397
A great lawn to me is one that somebody else has to mow! :-) ....
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Jimna 1000 RPM or 540 PTO Speed for Mower
kthompson
Join Date: Oct 2005 Posts: 5275 South Carolina Pics |
2012-02-13 182407
Quote:
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so put in underground dog fence and use the collars on sheep LOL you may have to shave their neck for the collar to work. ....
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