That works pretty good.
or you can do it the old fashioned way.... bore X bore X stroke x .7854
74.00mm piston 57.3mm stroke (250X)
you move the decimal left one number.
7.4 X 7.4 X 5.73 X .7854 = 246.4387 CCs
Welcome to the forums.... CHeck for anything that may have came unplugged. or a blown fuse. a coild could quit without warning but generally they will work when cold and when they get hot they start to fade away.
Yea I know I dont understand that lol why call it a 250? call it a 230cc... but using that calculation with my stroke, 62.2 mm i believe, and the bore size 69.4 (biggest piston i found on bike bandit) it came out to be 235. but while typing this message it occured to me that that is just the piston size not the bore, but bore wont be far off lol