The idler pulleys look to be too close to the drive pulley. It takes a lot of force to make a big belt like that twist 90 degrees in that short of a run between pulleys. Makes sense that it would not stay true very long after it flips, it was just barely hanging on before, and running upside down would rub the supporting corners round. I would use as long a belt as those slots would allow, and still be able to tighten the belt. A longer span will require less twisting force to make the belt change direction.
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Today's Featured Article - Sunday Drives - by Cowboy. Summer was finally upon us here in Northern Maine. We have two types of industry up here, one being "Forestry" (Wood Products) and the other "Farming" (Potatoes). There is no shortage of farm tractors and equipment around here! I have been restoring old Farm Tractors for the past 6 years, and have found it easier and less expensive to hit all the auctions and purchase whole tractors for parts needed. My wife who works at a local school, and only has weekends and summers off, while on t
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