The Convertible worked like a cylinder cleaner, with a powerful motor which sucked dirt straight into the bag, instead of the dust passing through the motor as on traditional uprights. This lessened the chance of motor failure due to dust building up, and also meant that the cleaner had all the power of a cylinder for above-floor cleaning. Few changes were made to it in is lifetime, although a power-driven model the U6033 was sold in the 1970s - testament to the weight of the thing! Incidentally, if you have a Powerdrive U6033 you'd like to sell, please email me.

The Convertible on this page is a very late model 1124a from November 1974, and was found dumped on a street with a broken wheel but little other damage.