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  1. #1
    New Member
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    May 2012
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    5
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    chestergap va.
    Tractor
    yanmar 1500 d

    Default yanmar 1500d

    hello all this is my first post hope you guys can help dad has a yanmar 1500d stock rims on front brand new 6-14 r1 tires on them he bought hoyes rear turf rims to gain wheel space wants to go with r1s i searched for 3 weeks closet thing i could find was goodyear dyna torqe 11.2-16 will this be enough to mess with ratio the goodyear is 35.5 tall thanks guys kenny

  2. #2
    Super Member clemsonfor's Avatar
    Join Date
    Sep 2009
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    6,465
    Location
    Greenwood Co., SC
    Tractor
    Yanmar YM2000

    Default Re: yanmar 1500d

    anybody know the stock height for the 1500? If within 5% id say your good?
    YM2000. MF dirt scoop,4' Jbar bushhog,boompole, LMC 12-16 disk harrow, 4' Atlas boxblade (with rippers). 1980 chevy K10,1990 ford ranger 2wd (285K miles),1997 saturn SL2 (twin cam!!),2001Toyota Higlander
    1986 Cobia 177 sunskiff w/1981 Johnson 60 hp
    1991 Javalen 17ft w/same year 150 Johnson GT
    Troybuilt 4 cycle & Echo 2 stroke,cold natured(need carb rebuild),MS390 Stihl, Northern tool pressure washer, mixes water into the oil in the pump(now dead, motor on a tiller). 5000 watt generator.

  3. #3
    New Member
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    May 2012
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    5
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    chestergap va.
    Tractor
    yanmar 1500 d

    Default Re: yanmar 1500d

    they tell me stock would be 37.5 but i am up 1 size on front and 35.5 on rear how critacal is this i mean what about wear will the front drag the back or do i worry to much

  4. #4
    Super Member clemsonfor's Avatar
    Join Date
    Sep 2009
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    6,465
    Location
    Greenwood Co., SC
    Tractor
    Yanmar YM2000

    Default Re: yanmar 1500d

    If your in tilled ground or mud i would not worry that much, but i would not use 4wd if the ratio is more than 10% different than the original ratio front/back between old and new set. I really dont know the %tage u need to stay in, one of the real gurus will know though.

    If on hard sod or concrete or asphault, unless withing the wiggle room i would not use it at all!!!

    But in loose ground the tires will just slip the needed amount. If off to much it can bind up the drive line making taking it in and out of 4wd difficult, like on an old truck. You know your front and rear diffs need to be the same with same tires or else you bind up and start poping stuff like U-joints, driveshafts, yokes , gears or input shafts!!!!
    YM2000. MF dirt scoop,4' Jbar bushhog,boompole, LMC 12-16 disk harrow, 4' Atlas boxblade (with rippers). 1980 chevy K10,1990 ford ranger 2wd (285K miles),1997 saturn SL2 (twin cam!!),2001Toyota Higlander
    1986 Cobia 177 sunskiff w/1981 Johnson 60 hp
    1991 Javalen 17ft w/same year 150 Johnson GT
    Troybuilt 4 cycle & Echo 2 stroke,cold natured(need carb rebuild),MS390 Stihl, Northern tool pressure washer, mixes water into the oil in the pump(now dead, motor on a tiller). 5000 watt generator.

  5. #5
    Super Member California's Avatar
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    Jan 2004
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    5,743
    Location
    Sonoma County
    Tractor
    Yanmar YM240, YM186D, and another YM186D

    Default Re: yanmar 1500d

    The front needs to lead the back by a little, since the front tires go farther when turning.

    It will slip in and out of 4x4 easily when the tire diameters are right. But as Clemsonfor said, if it's straining then expensive stuff is going to wear out quick - or worse.

  6. #6
    Elite Member
    Join Date
    Dec 2009
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    2,763
    Location
    gilmer tx
    Tractor
    yanmar 2002d

    Default Re: yanmar 1500d

    The ym220/226 service manual says front wheel pre-run percent should be 1 to 4% with a wear limit of 0 and 6%. Just guessing that range would be pretty close for most of the grey Yanmars.

  7. #7
    New Member
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    May 2012
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    chestergap va.
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    yanmar 1500 d

    Default Re: yanmar 1500d

    so what % am i off front calls for 5-14 i have a 6-14 rear calls for 8.3-22 i have been told new ones are 37.5 tall the ricers on it measure 36 tall (must be worn some) seems to work fine so i will only change rears to the 11.2-16 35.5 tall do you guys think this will work $900.00 wasted money can i change front to match the 35.5 thanks to all for your help

  8. #8
    Super Member clemsonfor's Avatar
    Join Date
    Sep 2009
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    6,465
    Location
    Greenwood Co., SC
    Tractor
    Yanmar YM2000

    Default Re: yanmar 1500d

    I think the only difference between the 5-14 and 6-14 is the width of the tire. But the new tires in the rear seem to short just quick thinking. Why pay 900 for tires anyway were the old ricers chewing up the yard?
    YM2000. MF dirt scoop,4' Jbar bushhog,boompole, LMC 12-16 disk harrow, 4' Atlas boxblade (with rippers). 1980 chevy K10,1990 ford ranger 2wd (285K miles),1997 saturn SL2 (twin cam!!),2001Toyota Higlander
    1986 Cobia 177 sunskiff w/1981 Johnson 60 hp
    1991 Javalen 17ft w/same year 150 Johnson GT
    Troybuilt 4 cycle & Echo 2 stroke,cold natured(need carb rebuild),MS390 Stihl, Northern tool pressure washer, mixes water into the oil in the pump(now dead, motor on a tiller). 5000 watt generator.

  9. #9
    Elite Member
    Join Date
    Dec 2009
    Posts
    2,763
    Location
    gilmer tx
    Tractor
    yanmar 2002d

    Default Re: yanmar 1500d

    You need to know the front to rear ratio on the 1500. Also the circumference of the tires. Then you can accurately figure the lead. Many folks say it doesn't matter that much. I am of the persuasion circumstances of use can make a big difference.

  10. #10
    New Member
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    May 2012
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    chestergap va.
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    yanmar 1500 d

    Default Re: yanmar 1500d

    yea they do no traction in gravel or hard sod useless to me on mountin side no rice here and correct me if im wrong but i think a 6-14 is taller than the 5-14 got me worried nobody seems to have a firm ansewer dont know lost on this ratio '''''''''' will my set up work guess i will be the guinia pig i will let you guys know thanks men

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