A flywheel has a plurality of lobes, each lobe being disposed generally in alignment with an area where {HEAD ~ the cam surface} undulates closest to {TAIL ~ the open end} of a cylinder 
undulates closest to
A flywheel has a plurality of lobes , each lobe being disposed generally in alignment with an area where { HEAD ~ the cam surface } undulates closest to { TAIL ~ the open end } of a cylinder
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH