I was curious to compare how various kart classes compare to a spec miata adjusted for power/weight. It was interesting and lower than I expected… Could be my math as well.
Taking a Miata to be 2400 lbs (putting a 200lb driver in there) developing 125HP
Briggs 206 at 360lbs = Equivilant to a SM with 73HP
World Formula at 360 = Equivilant to a SM with 100hp
KT100 at 360lbs = Equivilant to a SM with 120 HP
TaG at 360lbs = Equivalent to a SM with 187hp
Shifter at 385 = Equivalent to a SM with 280HP
Superkart at 450lbs = Equivalent to a SM with 480HP
Well yeah, and the rate that turns “attack” you on a kart track.
lbs are the same both side of the pond. Tons/Tonnes and Gallons are different though. Often when karting is compared to spec miata (or vice versa), so I thought it would be interesting to through some numbers at it.
Briggs 206 (8.8hp) at 360lbs = 40.9 lbs/hp
World Formula (12hp) at 360 = 30 lbs/hp
KT100 can (15hp) at 360lbs = 24 lbs/hp
KT100 pipe (18hp) at 360lbs = 20 lbs/hp
TaG Leopard (27hp) at 360lbs = 13.3 lbs/hp
TaG X30 (30hp) at 360lbs = 12 lbs/hp
TaG Super X30 (43hp) at 360lbs = 8.37 lbs/hp
CR125 Shifter (40hp) at 385 = 9.6 lbs/hp
TM KZ10C Shifter (48hp) at 385 = 8.02 lbs/hp
Superkart (100hp?) at 450lbs = 4.5 lbs/hp
That’s where the fun and debate starts with dynos… I think 100HP or anything north of it is #FakeNews to be honest. Like the 36HP formula super A motors
Dynos vary so much, as well as operators and of course there’s always our friend the “trophy pull” where a motor makes great peak numbers and either would blow up, or be useless on the track.
Riley Will would be a good guy to ask. I trust his methods and judgement.