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  1. #1

    Join Date
    Jul 2001
    Posts
    1,807
    Location
    Sharpsburg, Md
    Tractor
    John Deere 4100 HST

    Default How long would it take....

    Esteemed TBN members, I have a question.

    How long would it take to bushhog about 12 acres of mixed grasses? The field is approximately .5 miles long and, at most, 300 feet wide. My rotary cutter is 48". Don't laugh [img]/w3tcompact/icons/eyes.gif[/img]... I didn't buy it to do big fields. Just cleaning up on my property.

    I figure it will take me between 6-8 hrs. How far off do you think I am?

    Terry

  2. #2

    Join Date
    May 2001
    Posts
    530
    Location
    Winchester, VA
    Tractor
    Kubota B-7500

    Default Re: How long would it take....

    Terry,
    It takes me about hour per acre but that is with many obstacles trees and rock cliffs. Mine is also a 4 footer sure beats paying someone else to maintain the back field.[img]/w3tcompact/icons/grin.gif[/img]

  3. #3
    Elite Member
    Join Date
    Apr 2000
    Posts
    3,733
    Location
    Grayson County, TX
    Tractor
    Kubota B2710

    Default Re: How long would it take....

    I would take me about 8 hours with my 5-footer, so maybe one of our mathematicians will interpolate that to a 4-footer.

  4. #4

    Join Date
    Sep 2001
    Posts
    501
    Location
    South Weber Utah
    Tractor
    Kubota B2710

    Default Re: How long would it take....

    Here are the mowing rates I got at a turf class (mind you these are for lawn, not fields): 48" cut at 1.8 MPH is 71 minutes per acre, 2.5 MPH is 50 minutes per acre, and 3.5 MPH is 36 minutes per acre.

    I make no claim as to accuracy or the math on this, I'm just passing along information from a task rate chart I got.

  5. #5

    Join Date
    Mar 2001
    Posts
    179
    Location
    Southwest Indiana north of Evansville
    Tractor
    NH TC45D

    Default Re: How long would it take....

    Terry:

    I'd guess in the range of 9-10 hours depending on height of field, tractor speed and turns at end of each row.. Acre is 43,560 s.f. I believe. Based on your measurements of field's width and figuring a 3.75 foot cut per row due to some overlap, that would be about 80 rows. If you cut at 5 mph, that should give you a row time of 6 minutes per row. Note though, that using your measurements of length and width, the field would yield slightly over 18 acres.

    Of course, now that we have looked at the math, reality sets in: When I do the math for my fields, I usually end up taking an extra hour or 1.5 hours due to contour of land, moisture content of grass, height of grass AND if a truly gorgeous day, how much tractor seat time I can get out of the job.

    IndianaPaul

  6. #6

    Join Date
    Jul 2001
    Posts
    1,807
    Location
    Sharpsburg, Md
    Tractor
    John Deere 4100 HST

    Default Re: How long would it take....

    Hey guys, thank you for the information. Looks like my questimate may not be to far off. I'll find out tomorrow.

    Terry

  7. #7

    Join Date
    Apr 2002
    Posts
    52
    Location
    Evansville, Indiana
    Tractor
    KIOTI

    Default Re: How long would it take....

    I have just finished mowing 2 fields that are 11 acres each. They were quite overgrown with woody plants in them which slows your speed. I'm mowing with a 5ft rotary cutter and running in 4th gear which I believe is about 3.5 mph. I usually have to stop about once an hour to blow out the radiator screens with a leafblower<good hint>. My time in each field averaged 12 hours. Hope this helps.

    Jeff

  8. #8
    Super Member
    Rest in Peace
    frank_f15's Avatar
    Join Date
    Mar 2001
    Posts
    6,033
    Location
    BUFFALO ,NEW YORK AREA
    Tractor
    kubota b2400- R4 tires

    Default Re: How long would it take....

    i usually figure abot an hour per acre(5ft mower) but it so much depends on the grass and especially the ground conditions, how rough? and how much do u want to shake your innards around[img]/w3tcompact/icons/eyes.gif[/img] the tractor will scoot right though it, but i can't take the pounding.

  9. #9

    Join Date
    Jul 2001
    Posts
    1,807
    Location
    Sharpsburg, Md
    Tractor
    John Deere 4100 HST

    Default Re: How long would it take....

    The current situation....

    Started today and have logged approximately 5.5 hours on the hour meter on the tractor. This is what I'm gauging my time with. Clock time is slightly irrelevant. The difference between the two is really not that much. I started at 10:00 and got back to my house around 6:15. That is with a lunch break and a couple of breaks to get something to drink or to clean debris from the grill, axles, etc. Man, it is dusty work. [img]/w3tcompact/icons/frown.gif[/img]

    The grass has not been mowed since this spring. We have a local farmer who rents the land from our homeowners association and he hays it. He did not want to hay this fall cause the field has a bunch of Johnson Grass in it and it's gone to seed. So the grasses range from several inches to over six feet in height. Every once in a while, that little Yanmar engine grunts a little to push that rotary cutter thru the more dense grasses. But, all in all, that little Deer just keeps running and running. Albeit covered with dust, grass and weed seed, and tons of little critters running for their lives... [img]/w3tcompact/icons/eyes.gif[/img]

    I've gotten about half of the field done with my little JD4100 and the 48" rotary cutter. Set the throttle at 2500 rpm, set the cruise control and mow. Got to watch the trees grow, see the deer scamper across the field, and saw a couple of turkeys scavenging near the edge of the field.

    Terry

  10. #10

    Join Date
    Jan 2001
    Posts
    2,518
    Location
    Capital District, Upstate New York
    Tractor
    Satoh S650G, MF135, MF165, JD5205

    Default Re: How long would it take....

    4' cut @ 5mph (semi-smooth field or have dental insurance) ~~ 2 acres/hr.

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