Original sentence: Cessna produced a retractable-gear version of the 172 named the Cutlass 172RG and also produced versions on floats.The 172RG is further distinguished from the fixed-gear 172 by a variable pitch, constant speed propeller and more powerful stock engine
Edited sentence: Cessna produced a retractable-gear version of the 172 named the Cutlass RG (affectionaly known as the "Gutless Cutlass" as the extra weight of retractable gear results in performance penalties), and also produced versions on floats