When I was a kid.....W8! I still am!!! Lol!!!
When I started riding, I had like a '73 or so Enticer 250. It was a good sled to start on but I remember at least one going up in flames and plenty of break downs. Good thing my parents rode Polaris
I didn't get to take my own sled out all day until I was 8. I rode around fields and Crystal Lake before then or when my parents stopped in a field for lunch. When I was ten (and my brother 12) my parents upgraded to XLT's and we got their '91 Indy 400 and '92 Indy 440. They would do 80-90mph on a straight away
I don't know how, but I usually lucked out and rode the 440
It was a great sled for a youngster. It had what Polaris called an E-Z Throttle. It had a bit more of a reach to it but the main trail usage amount of throttle was extremely easy. If you gave it the onion, it was about the same as a normal one. My mom hated it though. I guess I always had big hands
If you could find one of those laying around, it would be a great find. It was a 121' and we put 1" traction scoops on it which really helped. If a guy could get the 133" SKS track, it would be perfect, but you would have to put smaller drivers on it and rail/tunnel extension on too. Oh and it landed jumps good too. Then I got a modded out Ultra RMK when i was 14 or so. Had to have horsepower since so watch out!