Drawbacks of single-cylinder engines include a more pulsating power delivery through each cycle and higher levels of vibration.
To reduce the vibration level, they often make greater use of balance shafts than multi-cylinder engines,[3] as well as more extreme methods such as a dummy connecting rod (for example the Ducati Supermono).
[9] Single cylinder engines also remain in widespread use in motorcycles, motor scooters, go-karts, auto rickshaws, and radio-controlled models.
The Honda Super Cub (the motor vehicle with the highest overall sales since its introduction in 1958) uses a 49 cc (3.0 cu in) four-stroke single-cylinder engine.
There are also several single-cylinder sportbikes (such as the KTM 690 Duke R), dual-sport motorcycles (such as the BMW G650GS) and the classic-styled Royal Enfield 500 Bullet.