Welcome to ModelEngineMaker !If you have problems registering or logging in, please use the contact menu option to request assistance.
Dave,Good article, thanks.Bob, the article uses the Bilgram diagram. If you have any trouble with that diagram simply ask. It is my favorite of the valve gear graphic calculators and I can explain how it works. It is the simplest at least for me to visualize how changes affect the slide valve dimensions.Cheers Dan