Most people ask me how fast he goes, not about the kart’s HP.
Running the KT100 with Jr Sportsman restricted intake (races against C-80) I’ve seen my son hit 60MPH on a long straight. We probably could have geared for more speed but had to balance gearing for corner exit power with straightaway speed.
Horsepower is relative, same dyno, same day different readings.
I’m guessing that 8HP is a tad high, but close to a max in this class (C-80)
Racestudio’s “engine analysis” says we’re making close to 6HP calculating from change in speed (Power = Work/Time)
Rotax, next year 🙂