In effort to explain what it is that my son is doing racing ‘go karts’, can anyone provide a general range of what horsepower different motors make? He is in a Rotax jr, having been running a Comer 80 last year and it is hard to describe to people that it is real racing, not just cruising around.
Specifically a Rotax in both Jr and Sr formats. I’d also be curious to confirm that a Comer 80 makes about 8hp.
Often times when talking to people, most think of a go-kart as the 5hp type you find at the mini-golf range. A few think of what you can rent at some indoor places, which albeit fun and give you a work out are not as fast as a Rotax jr. I am just looking for reference points to provide as an explanation of the sport.
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)