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  1. #1
    New Member
    Join Date
    Mar 2002
    Posts
    17
    Location
    Granite Falls NC
    Tractor
    N.H. tc21

    Default Finish mower size

    I have a NewHolland tc21 and would like to go to a larger finish mower, I now have a 50 inch rear mower and would like to go as big as can . Any advice ?
    Dee

  2. #2
    New Member
    Join Date
    Sep 2005
    Posts
    0

    Default Re: Finish mower size

    Dee,
    I have a TC18 and I use a 60'' rear finish mower with no problems at all. As long as you are going to use a finish mower and not a rotary cutter, you should be able to go a little bigger then my 60''. You should check New Holland's web page to see what they reccomend.
    -Dave

  3. #3
    Silver Member
    Join Date
    Feb 2002
    Posts
    105
    Location
    Milford, MI
    Tractor
    JD 4100

    Default Re: Finish mower size

    I run a 60" on my JD 4100 (~20 pto hp), with no problems. It takes some real forgotten lawn conditions to make it even grunt. I wouldn't be suprised if it would run a 72".

    I would guess that you'd be fine with a 60", but I'd borrow or test a 72" before buying.

  4. #4
    Veteran Member chim's Avatar
    Join Date
    Apr 2002
    Posts
    2,249
    Location
    Lancaster County, PA
    Tractor
    Kubota L3200, Ford 1210

    Default Re: Finish mower size

    I have a Ford 1210 (16HP) and a kubota B7500 (21HP), and both are equipped with 60" RFM's. The Ford has a Caroni, and the Kubota has a Landpride, which is a good bit heavier. The Ford would be a bit light for the Landpride - tried it and didn't like it. The mowing was OK, but handling was like hitching a 30 travel trailer to an S10 Blazer................chim

  5. #5
    Platinum Member
    Join Date
    Aug 2000
    Posts
    681
    Location
    Valrico, FL
    Tractor
    No longer have :-(

    Default Re: Finish mower size

    I would think your 21hp unit would be fine to power a 72" finish mower for typical lawn mowing. When I bought my Douglas 72" finish mower 15 years ago there was a strange sentence in the owner's manual that stated the warranty would be void if used with a tractor with greater than 25 PTO hp. Obviously the mfg thought that 25 PTO hp could damage the unit.

    At that point in time the mower was being used with a Ford 9N and it handled it just fine. Now the mower is used behind the TC40D which is way too much power, the mower can slow down in grass and the belts slip long before the engine even thinks about grunting. If you keep the blades sharp and you don't try to cut a 1ft tall thick lawn then you should be ok.

  6. #6
    Elite Member hazmat's Avatar
    Join Date
    Feb 2002
    Posts
    4,028
    Location
    West Newbury, MA & Harrison, ME
    Tractor
    Kubota L5460HSTC

    Default Re: Finish mower size

    Per New Holland Implement Chart max recommended size is 60". I've used 60" Land Pride on my TC18 & the 60" MMM. I think 72 is too big for 21HP.

  7. #7

    Join Date
    Apr 2003
    Posts
    116
    Location
    southern states
    Tractor
    Hinomoto e2004 aka 5020

    Default Re: Finish mower size

    I wouldn't consider anything under a 60" if you consider the amount of torque the diesel engine has vs a gas it's obvious there will be no trouble pulling it.. a 23hp kohler will pull a 62" mid-mount deck...considering yours has ~19hp I'd hope it would pull that it probaly has a good 7-10LB of torque more..

    Just make sure you get a rear discharge to help keep from bogging it down and don't bush-hog with it.. 6-8" max.. or if it bogs it down too much just raise the height a little..

    My hinomoto throws a 72" around and I think new holland says you need 29hp .. although it is the only implement i need a lot of frontend weight..#250..

  8. #8
    Platinum Member
    Join Date
    May 2001
    Posts
    932
    Location
    QC, Canada
    Tractor
    B7500HSD

    Default Re: Finish mower size

    Do you have anything on the front of your tractor?

    My B7500 does wheelies with my 60" mower (~525lbs) raised (I don't raise it unless I must and I'm going real slow in a straight line).

  9. #9
    Veteran Member
    Join Date
    Jan 2002
    Posts
    1,569
    Location
    Colorado
    Tractor
    2000 New Holland TC29D with 7308 FEL, and top & tilt. 1950 John Deere B. 1940 Farmall A.

    Default Re: Finish mower size

    There are 2 things to consider, PTO HP and weight. If you have flat ground and mow often so the grass doesn't get too tall and/or thick, you could probably get by with a 6' mower. But, if the grass gets tall and thick and/or you have to go up any significant hills (15 degrees or more), you'll run out of HP. My 6' rear finish mower weighs about 650 lbs. So, that extra weight and the weight of the tractor, combined with mowing the grass will eat up HP going up a hill. You'll also need a fair amount of weight on the front to keep your front wheels on the ground, even on flat ground. My TC29D, which is close to 1000 lbs heavier than a TC21, doesn't need any weight on flat ground, but I need 65 lbs of weight on the front to be able to keep the front end on the ground if I go up hill. I'd go by the NH book and go with a 5' mower.

  10. #10
    Veteran Member
    Join Date
    Feb 2001
    Posts
    1,447
    Location
    South-central Michigan
    Tractor
    New Holland TC40D

    Default Re: Finish mower size

    I'd stop at a 60" mower. I had a 72" on my 25 hp Ford 1720 and occasionally bog it down. If you're cutting every week or two and the grass is being kept relatively short, you might be OK to step up even further, but I'd think that size deck is getting a little large physically for your tractor.

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