Loop the Loop, Bicycle Daredevil 

O.V. Babcock. Looping death trap loop. Ontario Beach Park, N.Y. The loop the loop stunt was created the bicycle daredevil Allo Diavolo. To perform the loop the loop stunt a rider would ride a bicycle around a large wooden loop to loop apparatus. From the top; a short arc, to ease the downward momentum for the climb, long, gradual rise, so designed to minimize the outward pressure greatest in this arc, half circle, made small so that the wheel may get past the apex with the least possible expenditure of force, wide downward art giving the least possible momentum on leaving the loop, gentle slope to the ground. No photographer credited, undated.