Modern Tire Dealer

OCT 2018

Magazine for the professional tire industry

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A G T i r e T a l k M T D O c t o b e r 2 0 1 8 44 When roading, track machines are typi- cally limited to the speed in which they can travel roads based upon the width and length of the track they are running. Due to the amount of movement from bogie wheels and the mechanisms required to move the machine on tracks, heat builds up in the rubber of the track. e downward force/ weight of each of these will also cause the rubber to deform/move. e more rubber squirms, compresses, decompresses, the more kinetic energy builds up and creates heat. Heat and rubber do not mix well and ultimately causes the rubber to break down. We believe soil compaction is the greatest of all costs associated with tracks, especially in very wet soil. In fact, tests have shown tracks have a significant difference in how ground pressure is applied. Tracks apply a very non-uniform pressure, while tires, specifically IF & VF tires, apply a very even/ uniform pressure. To be clear, tracks have a market, and depending on the region, farmers may want to achieve different results. However, for most of North America, when you add the initial financial cost, fuel cost, maintenance, lower yield due to soil compaction, and less efficiency on the road, choosing tracks over properly inflated IF or VF tires is a very costly "insurance policy." James Crouch, marketing specialist, Alliance Tire Americas Inc.: At Alliance, we have invested ourselves completely in the development and sale of pneumatic agriculture tires because that is what we believe is the correct solution for provid- ing the best overall performance for farm equipment. Sure, there are applications and field conditions that may lend themselves to belts, but the upfront cost as well as the maintenance costs make it tough to justify even in those conditions. We are continuously expanding our Agriflex line to provide the optimal solution for farmers. A properly inflated VF tire will give any track system a run for its money. To maximize the benefit of VF technology, or even standard radials, the tires must be run at the correct inflation pressure. e more a tire is overinflated, the lesser the potential performance will be. As a tire increases past its optimal inflation pressure, the footprint gets smaller both in length and eventually in width, while a properly inflated tire will provide the largest footprint available for that sized tire. Footprint is oen where people assume a track has an advantage. is may not be completely true. A pneumatic tire, when inflated properly, will evenly distribute the load of the machine throughout the contact area or footprint. is even weight distribution minimizes the damage done to the soil. Tracks are not known for their even weight distribution, and instead provide high pressure spots under the idlers or dollies that cause what is known as deep compaction and assist in the creation of hard pan deep under the surface. Since their spike in popularity, tracks have been researched extensively to try to better understand what actually happens under them in relation to that of a tire. One of the driving forces in Alliance's R&D program is creating tires that can tackle any challenge — creating the right tire for the job. Tracks are basically a one-solution www.vipal-usa.com www.vipal-usa.com Facebook: Vipal Rubber Corp Facebook: Vipal Rubber Corp Facebook: Vipal Rubber Corp

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