MOTORIZED BICYCLE PERFORMANCE MODIFICATIONS FOR GRUBEE ENGINE
Should you modify your engine? Two main options for engine modification Advice for racers and speed freaks Ignition Timing and Spark Strength Improvement by CDI Porting and other power-enhancing engine changes Increasing Cylinder Compression Formulas determining peak rpm of ports Intake Extension for More Low RPM Power Exhaust Extension for More Low RPM Power Modify Any Pipe For More Torque Stealth Silencer construction plans Improving Crankcase Compression my motorized bicycling experience
Suggested reading: Two Stroke Performance Tuning Two Stroke Tuners Handbook
1000cc motorized bicycle:
George Wyman and the first motored vehicle to cross the USA (yr 1902):
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