Hi Peter.

I have a question about the timing wheel disk (on page 14)
http://home.planet.nl/~sintt000/Overlap.jpg

I can understand that John says 50-50 switching is important. But unless it is some kind of mistake I do not really understand why the top part of the switching disk is in fact overlapping, and the lower part is not?
Any ideas?

Thanks and Kind regards,
Steven