Sport touring motorcycle Sport touring motorcycle A sport touring motorcycle (sometime a "sports-tourer") is a type of motorcycle that combines the performance of a sport bike with the long-distance capabilities and comfort of a touring motorcycle. The first sport-tourer is said to be the fully faired 1977 BMW R100RS. Journalist Peter Egan defines the sport-tourer as a "café racer that doesn't hurt your wrists and a touring bike that doesn't feel like a tank," and identified the R100RS as the first example he owned. Unlike a sport model, a sport touring model will typically have more wind protection with larger fairings and an
Constant-speed propeller frequently throughout flight. Virtually all high-performance propeller-driven aircraft have constant-speed propellers, as they greatly improve fuel efficiency and performance, especially at high altitude. A constant-speed unit (CSU) or propeller governor is the device fitted to one of these propellers to automatically change its pitch so as to attempt to keep engine speed constant. Most engines produce their maximum power in a narrow speed band. The CSU can be said to be to an aircraft what the CVT is to the motorcar: the engine can be kept running at its optimum speed, no matter at what speed the aircraft is flying