measuring flywheeltaper

[ace75]

Where do I measure the crank to find out if its small or large taper flywheel? Also, Id like to replace this crank we have with a new one. Can someone explain what I need to measure as far as stroke, pin etc to get the right crank? Stock cylinder ported with stock piston. DRR 90 cc.

[wickestangwv]

Stock crank is large taper. I'd call Gary at G force he can tell you exactly what you have