That sounds about right, but you cannot compare that to flat karts , BIG difference.When we use to switch between Sr Champ (clone 425) And Teen Champ (Clone Blue plate 390) I swear we added a tooth to the front and rear.
17/62 (sr) to a 18/63 (teen)- teen champs would be at least a .1 faster than the Sr's.
I realize this is 30# difference- so take that into account.
I was wrong. The sr class is 13/63If 13/60 is indeed correct for Sr Class, start 13/59 for Blue plate, you'll probably need to pull 1 more to 58 to race.
then you start on 13/62I was wrong. The sr class is 13/63
So the plate engines are geared higherthen you start on 13/62