SYCARMS, interesting point of view. After driving the kart the whole mile (maybe?) that I did, it was on some pretty varied asphalt and gravel steep and flat, and it ran great, I'm also used to my electric scooter that tops out around 20, so you know how it goes...
And it's not like my parents want me any faster... "Hey mom, dad? Can I get a few parts for my CVT and get a new Racing CDI so I can go faster on that tight, skinny trail we have? It'll only cost $100!" Not gonna happen.
I just want to get the frame in "trail worthy" condition before I even THINK about touching that engine.