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  1. #11
    Elite Member
    Join Date
    Feb 2001
    Posts
    2,630
    Location
    Kansas
    Tractor
    Kubota BX2200, Kubota B2410

    Default Re: Turning radius Geometry lesson

    I am pretty sure you cannot mix R4 and turf, there may be a possibility with rear bar turf and turf front.
    I should think the radius would increase as speed goes up and that scuffing would increase also as speed increases.
    Perhaps try reducing your front tire pressure a bit. I reduced mine. I remeasured my 2410 diameter today. I can get as low as 68 inches but that is turning slowly and with the wheel hard over. It does not seem to tear my fescue/clay lawn. Sometimes my turn leaves an elliptical (slightly) uncut grass area--this could well be front tire slipping or me just letting up on the sateering wheel a tad. Please don't take this the wrong way but I think a 2410 size machine is about as big as I would want on my lawn and it is really to big--of course it is my lawn so I get to decide--others may vary. Of course, now, if it is wet the 2410 and BX will both make a big mess. I am thinking also that R4 tires are nice but I think I would have preferred turfs and may buy a set. J

  2. #12
    Platinum Member
    Join Date
    Mar 2002
    Posts
    945
    Location
    Bucks County, PA
    Tractor
    PT425, Kubota L2050, 3 hydrostatic Exmark mowers. Z21D Kubota ZTR, 2 Kunz acrease wing mowers, 1 rough cut kunz mower, one vintage grasshopper ztr, one vintage gravely ztr, various large garden tracto

    Default Re: Turning radius Geometry lesson

    time to sell and join our ranks ... you are already an honorary pter ... our squadron commander will give you a few lesson on the way down to tazwell and on the way back home you can come by my place and qualify to drive your new aquisition with two wing mowers in tow (kunz eng. acrease 57 inches wide swat each).

  3. #13
    Super Member ronjhall's Avatar
    Join Date
    Apr 2000
    Posts
    7,771
    Location
    SE Michigan, AZ when its cold in MI.
    Tractor
    Kubota 2910 HST

    Default Re: Turning radius Geometry lesson

    Glenn
    <font color=blue>The diameter of the uncut circle decreases as weight on the front (the FEL) increases </font color=blue>

    I think this is because the added weight gives more traction.

    <font color=blue> And you are saying the diameter also decreases as throttle rpm's decrease? </font color=blue>

    Not throttle, but how fast tractor is moving forward. Slow down and the diameter gets smaller.

    <font color=blue> but I do have loaded rears and I donít have problems unless I try to cut a maximum turn. </font color=blue>

    Slowing down seems to help to stop the scuffing.

    When measuring the circles cut. The radius only changes from my minimum to your maximum diameter by a radius of 5 Ĺ ď. There are only a couple of places on my lawn where that is going to make much difference.

    I run with pedal to the metal all the time unless Iím close to something I donít want to hit. [img]/w3tcompact/icons/eyes.gif[/img]

  4. #14
    Super Member ronjhall's Avatar
    Join Date
    Apr 2000
    Posts
    7,771
    Location
    SE Michigan, AZ when its cold in MI.
    Tractor
    Kubota 2910 HST

    Default Re: Turning radius Geometry lesson

    TresCrows

    <font color=blue>I am thinking also that R4 tires are nice but I think I would have preferred turfs and may buy a set</font color=blue>

    When you get the price. You may decide to buy another tractor. [img]/w3tcompact/icons/laugh.gif[/img]

  5. #15
    Elite Member hazmat's Avatar
    Join Date
    Feb 2002
    Posts
    4,028
    Location
    West Newbury, MA & Harrison, ME
    Tractor
    Kubota L5460HSTC

    Default Re: Turning radius Geometry lesson

    As a point of reference, I measured my 1978 John Deere 316 garden tractor (48" cut) uncut diameter, It was a whopping 11 feet. It has manual steering making the forward / reverse shuttle that much more difficult. My dad's honda 4514 lawn tractor (38" cut) uncut diameter was about 40".

    It looks like anything is going to be an improvement over the 316.

    Hazmat

  6. #16
    Platinum Member
    Join Date
    May 2001
    Posts
    924
    Location
    QC, Canada
    Tractor
    B7500HSD

    Default Re: Turning radius Geometry lesson

    B7500 with 60" RFM, uncut circle 10'2" [img]/w3tcompact/icons/grin.gif[/img]

  7. #17
    Elite Member
    Join Date
    Feb 2001
    Posts
    2,630
    Location
    Kansas
    Tractor
    Kubota BX2200, Kubota B2410

    Default Re: Turning radius Geometry lesson

    I might just do that, all things are possible. I know some teens that steal stereos and mag wheels, maybe I could just hire them to steal yours [img]/w3tcompact/icons/shocked.gif[/img] , but I would not do that. J

  8. #18

    Join Date
    Oct 2001
    Posts
    147
    Location
    Southeastern Ohio
    Tractor
    Kubota B2910

    Default Re: Turning radius Geometry lesson

    <font color=blue>B7500 with 60" RFM, uncut circle 10'2" </font color=blue>

    Now try it in reverse and see what you come up with. [img]/w3tcompact/icons/laugh.gif[/img]

    Jeff

  9. #19

    Default Re: Turning radius Geometry lesson

    Leave it to old 3-crows to point out other threads on the subject. If your going to point out threads give us the name and date, otherwise just answer the question. What is uncut radius???

  10. #20
    Elite Member
    Join Date
    Feb 2001
    Posts
    2,630
    Location
    Kansas
    Tractor
    Kubota BX2200, Kubota B2410

    Default Re: Turning radius Geometry lesson

    Radius equals 1/2 of diameter, ol'Rebar. [img]/w3tcompact/icons/wink.gif[/img] J

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