A unique idea that works well, but is very noisy, the wheels are set in a ball bearing race, and when you move it it sounds like a bunch of bb s rolling around!!
4250 Lamb motor dated 1952, the Strato was not introduced until 1953, the motor in it is unique , and was only used in the Strato Cleaner, all other Apexes, tanks, Dyno Cleaner and Aero Cleaner, used the Lamb motor.