caster tires...size/tread

Discussion in 'Lawn Mowing' started by Envy Lawn Service, Dec 18, 2002.

  1. Envy Lawn Service

    Envy Lawn Service LawnSite Fanatic
    Posts: 11,062

    I've seen all different caster tire height and width. Some are slick, some have tread.

    Seems like a slick tread would be easier on turf when rotating. The bigger the tire the better the ride?
    The wider the tire, the less ground pressure?

    What's the scoop here? :confused:
     
  2. TLS

    TLS LawnSite Fanatic
    Posts: 7,937

    :eek:
     
  3. Treaded tire will through debris up on the machine also. The more tread the more debris.

    For the rest you got it right on.
     
  4. Doc Pete

    Doc Pete LawnSite Gold Member
    Posts: 3,469

    Well to a point. The wider the tire the large the "footprint", and the larger effort to turn it. As far as a softer rider, you want a larger "sideway", to "cushion" the bumps. For some stupid reason "most" all of the rider makers are offering the 12x23/25 tire/rim combo. If they went to the 8/9 X 23 tire/rim combo you'd get a much better ride.
    Pete
     
  5. Flex-Deck

    Flex-Deck LawnSite Silver Member
    Posts: 2,846

    Switchless - your numbers do not make sense -

    If the tire is a 9x3.5x4 - 4 ply - It means it is 9" tread diameter or height of the tire from ground to top.

    3.5 inches wide (sidewalls)

    Fits a 4 inch rim. - 4 ply

    Thanks, Brad
     
  6. Envy Lawn Service

    Envy Lawn Service LawnSite Fanatic
    Posts: 11,062

    He's talking about 24x12-12 v/s 24x12-8, saying the smaller rim gives a better ride.
     
  7. Doc Pete

    Doc Pete LawnSite Gold Member
    Posts: 3,469

    Sorry,
    I thought you'd catch my drift. I was referring to the tires rear tires on a rider, of which I meant, the tire size was from 23" to 25" in diameter on a 12" rim. And, the second part was the suggestion to decrease the rim size to 8" or 9", and still run a 23"to 25" diameter tire. This would increase the sizewall (as I call it) 3"or 4" inches. Also, keep in mind that going from a 12" rim to an 8", besides being 4" small is 33% smaller, which is a big amount.
    Pete
     
  8. Doc Pete

    Doc Pete LawnSite Gold Member
    Posts: 3,469

    Yup, right on. FWIW, after experimenting with my WB's tires, the larger sidewall, also gives a better cut. The reason for this is the the bigger sidewalled tire acts like a "tank track" and rolls "over and around" the bumps, keeping the deck more level with the ground, as compared to the stiffer sidewall, which follows every high and low spot of the ground.
    Pete
     
  9. This goes both ways. Ferris offers tires like you described on their WB'a and they give a "floatiing" felling but as they float they cannot follow when the ground changes.

    On another note the more sidewall you have the higher cost of a tire. More sidewall = more rubber = more ply's.

    DC runs the turf boss tires like this, for some they love and others hate it.

    I find the 24-12-12 size is optimum for what they are mounted to.
     
  10. Envy Lawn Service

    Envy Lawn Service LawnSite Fanatic
    Posts: 11,062

    I'm glad I thought to ask this question because makes like Gravely for instance have tread on the castor tires. But Gravely uses a taller tire.

    Anyways, the knowledge is good either way if I go with a rider, a walkbehind or both. Best of all, a good friend of mine is very handy with a welder. So I may be building a custom sulky sometime soon. If my ideas and his work come together right, we might just have a great invention!
     

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