Everything you ever wanted to know about how a 2 Stroke Motor Works and may not have been afraid to ask - just never got the right answer.  Watching the motor above go through the "events" you can tell al lot of things happen in those the simple strokes.

Two stroke motors depend on a series of events that are inter-dependent on each other.  Top motor builders know how to make big horsepower numbers by getting the most out of each of the events.  Now you can do the same.

Three chapters have been written in MS Word each having several illustrations.  Chapter 2 works hand-in-hand with the Port Timing Worksheet that calculates the port opening timing from distance to degrees.  You will need to know the length of the Connecting Rod as this affects the relative timing on a piston motor.

Chapter 3 connects the all of events together - internal and Pipe.  The Event Worksheet has several complex Macros programmed to provide a graphical illustration of the timing for all the critical events.

This Web site has over 500 links from 2 stroke users among Karting, Motocross and Radio Controlled 2 strokes users.  Enjoy.

Chapter 1 - Boot Camp

Chapter 2 - Port Timing  - Port Timing Worksheet

Chapter 3 - Pipes - Pipe Calculator Worksheet  -  Event Worksheet