WHIZZER Pacemaker Models/Series Timeline, Specifications & Photos

The Pacemaker Model was first introduced in 1948 and continued through 1952, being unique in its time. It had a Schwinn-built chassis, with a new telescoping front fork with dual coil springs. It had Lobdell wheels with a Sturmey-Archer expanding front-wheel brake, a coaster brake on the rear and automatic clutch.