'One knuckle owner told us why of H D quit making that masterful mill. In his opinion (and he's been riding the steelheaded monsters for over twenty years), Harley discovered and built an engine so strong it would run forever with only minor rebuilds. That, my friends, Is bad for business. Competing in the business community during the Knuckle Era, even though the community was still small and amounted to fewer than six major motorcycle manufacturers, Harley still had to remedy the situation. They had to build parts that sooner or later would wear out. So they built the panhead.'
pic comes from my desktop - so therefore from someone elses blog - so thanks