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  1. willturner1

    Tractor Pulling Tyre Dynamics

    Thanks for these, guys. However, my first guesses are that "something" is adding maybe 100% to the drawbar pull obtainable from friction on moist clay.. That is allowing for weight transfer effects and pulling chain angles Some mathematics would be most welcome... Willturner
  2. willturner1

    Tractor Pulling Tyre Dynamics

    Please can someone provide formulae that explain the very high drawbar pulls that can be generated by competition Pulling Tractors. I am aware of cut down tread lugs and tyre peripheral speeds of maybe 200 mph. Is it some form of energy transfer from speeding up hunks of clay? WillTurner

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