January 22, 2010 at 3:29 pm
#24144
IBA270
Participant
Two strokes, (very) generally speaking have power output similar to four stroke machines of twice their displacement. Additionally, they are comparatively lighter. While a 4 stroke motor has only one power stroke in every four strokes, a two stroke has one power stroke in every two.
For example, and certainly depending on track and rider, 250cc bikes can give 600cc bikes fits as they carry much great cornering speeds. On longer tracks, the 600 will have their way, but the 250’s are really a neat package.
125’s work the same way, but are of course smaller…A 125 puts out something like 35hp, and a 250 might be close to 80hp. Both guesses might be a bit high, but remember that the Aprilia only weighs like 280lbs.