RWYB Champ class?

[rainman]

Ted, jump ahead to 1:19:34

Nice video but terrible idea having Champ karts racing together with flat karts in some classes. Very dangerous.

 

[R Bahnsen]

Interesting, they put a 250cc limit on the OHV but nothing on the flatheads.

The rules also state (Any stock or modified single cylinder four stroke 200 cc stock style small block engine) this is limiting the flat heads to about 270cc if I'm not mistaken.