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What speed do/did you mow hay

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showcrop
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PostPosted: Sun Jul 14, 2019 4:45 pm    Post subject: Re: What speed do/did you mow hay Reply to specific post Reply with quote

CVPost-Lazy WP wrote:
(quoted from post at 13:06:01 07/14/19) 3rd or 4th half throttle with a M 400 or 450 running pitman stick mowers. Like was said a balanced head mower you can run more rpm but why?
I have been in REALLY TOUGH cutting and had to go down to first gear and tip the bar back further to get it to mow clean. Lots of tricks to make a sickle bar mow good.
<img src="/cvphotos/cvphoto29578.jpg">


Wow LazyWP, That is some sickle bar set up!! Those must be six footers? I have never heard of, let alone seen one of those. As has been said the Farmallb, mower must need some hold downs or some other type of work to make his cut properly at a little higher speed.
 
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Leroy
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PostPosted: Mon Jul 15, 2019 4:51 am    Post subject: Re: What speed do/did you mow hay Reply to specific post Reply with quote

PTO speed is first thing but then different mowers have different gearing from PTO to knife head due to different ratio on belt pullys, Some might have 2 different size sets of pullys for light or heavy cutting. Balanced head mowers still do use a belt to drive the head
 
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dhermesc
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PostPosted: Mon Jul 15, 2019 5:09 am    Post subject: Re: What speed do/did you mow hay Reply to specific post Reply with quote

The correct answer is "it depends".

Slightly thin brome can be mowed in 3rd or 4th gear. The miserable stuff I was cutting yesterday was extremely thick and half of it had been laying down since late May and mowing it was horrible - I spent most of the day in 1st gear with a balanced head 7' mower.
 
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showcrop
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PostPosted: Mon Jul 15, 2019 8:49 am    Post subject: Re: What speed do/did you mow hay Reply to specific post Reply with quote

CVPost-dhermesc wrote:
(quoted from post at 06:09:37 07/15/19) The correct answer is "it depends".

Slightly thin brome can be mowed in 3rd or 4th gear. The miserable stuff I was cutting yesterday was extremely thick and half of it had been laying down since late May and mowing it was horrible - I spent most of the day in 1st gear with a balanced head 7' mower.


Since conditions always vary and pretty much everyone involved with mowers knows that, it is much more helpful to the OP to just leave that part as understood and give information that is applicable to conditions in general.
 
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Texasmark1
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PostPosted: Tue Jul 16, 2019 4:43 am    Post subject: Re: What speed do/did you mow hay Reply to specific post Reply with quote

With my Drum Mowers, as fast as you can stay in the seat, wet or dry, tall or short, thick or thin!
 
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Farmallb
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PostPosted: Wed Jul 17, 2019 6:17 pm    Post subject: Re: What speed do/did you mow hay Reply to specific post Reply with quote

ALSO< I think the size of the field dictates speed als. I was mowing a 3 acre patch.
 
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rankrank1
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PostPosted: Thu Jul 18, 2019 1:19 pm    Post subject: Re: What speed do/did you mow hay Reply to specific post Reply with quote

3rd gear at wide open throttle is what I almost always mow hay at with either my Farmall h or Farmall m using my sickle based mower conditioner. (Hesston 1120)

If the hay is super thick or alternatively a bit wet when I happen to be mowing and I am using the limited hp of the Farmall h out of necessity then I may have to use 2nd gear WOT due to limited tractor hp of the h.
 
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Leroy
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PostPosted: Thu Jul 18, 2019 2:48 pm    Post subject: Re: What speed do/did you mow hay Reply to specific post Reply with quote

I belierve the mower-conditioners have a different type of knife drive than the pitman bar mowers so can handle the full throttle speed better than a pitman stick. So they need the speed fror the rolls and the way they are set up to get that roll speed the knife drive is set uo better for the higher speed on the knife. Only way on a bar mower to slow the knife down from slap-slap-slap is to slightly slow the PTO speed down. To fast a knife speed is hard on the mower. On a good setup mower a 2/3rds speed in 4th gear will mow better than wide open in 3rd gear will as it will not make the knife vibrate as bad. Think back to the horse drawn ground driven mowers. They were geared for a cutter bar speed of the walking speed of the horse and they lasted for years with no problems. Now when the owner of that mower got a tractor and cut toung off to tractor hitch he tried running at tractor speeds and not horse speeds so it speeded up the knife untill the speed was so high it litterly shook the mower to pieces. So keep that knife speed down to where it does not shake the mower to pieces. And it will likely cut better at a gear higher than the other way around.
 
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rankrank1
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PostPosted: Thu Jul 18, 2019 4:36 pm    Post subject: Re: What speed do/did you mow hay Reply to specific post Reply with quote

I have my governors adjusted and set to achieve right around 540 PTO rpm with the throttle at wide open. Frankly I used a handheld rpm meter on the PTO shaft to make all my governor adjustments using info from the archives on this site.

So I am certainly not over speeding the PTO speed for my moco which is designed for 540 PTO rpm. No whether that is too fast for a pitman style sickle mower then no clue.
 
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Farmallb
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PostPosted: Fri Jul 19, 2019 11:42 am    Post subject: Re: What speed do/did you mow hay Reply to specific post Reply with quote

I find, in a small 3 acre field, that at 2nd gear wide open, when I come to the end, I can make/turn
corners easier. Course, im 71. Even when I go out past the corner and make a turn to come back in,
I find I can make a faster, shorter turn at 2nd. I can see several variables there. Age, size of
field, whether making cur corners, or making a circle.
 
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