Notable Features : Formerly owned and raced by Chuck Feken ( Chuck's Harley-Davidson, Bloomington, IL ) at tracks including Peoria and Houston's Astrodome. Purchased February 1982. Cycle chassis is an upgraded construction utilizing a 1970 Iron XR frame, Ceriani 35 mm fork, Kennedy front wheel, Harley R-model rear hub , Hurst-Airheart calipers and disc brakes ( dual front & single rear ), Mikuni 40 mm VM carb, Lipp Plastics fuel tank, Paint by Danny Erickson