The American #17 Simplex Filled with Holes

Only the American 75-hp #17 Simplex driven and owned by Frank Croker, son of the Tammany Hall boss Richard Croker, approached the power of the European machines. During the pre-race weigh-in, the Simplex failed to meet the race weight limitation of 2,204 pounds. Croker reduced the weight by drilling holes throughout the chassis, which can be seen below the engine’s hood and on the mechanician’s seat.