My only fear is finally getting the ambition to build one with a regular car engine we have laying around here.
A small tube frame with a cavalier 4 cyl would fly!!! Trust me, it's been discussed lol...

One of the guys at our shop did a custom framed go kart with a 1000cc yamaha engine. Had the 5 sp trans and it fucking screwed! Lasted a week until the service manager flipped it and hurt himself bad! Then it went bye bye! lol

no roll bar?

He had a roll bar but no seat belts! Got thrown out of it! Wasn't thinking when he built it!

Sorry I didnt make it but I forgot that I had to be in Ireland for the rain date when I posted. I meant to update but never got around to it. Oh well...