I remember seeing a schematics for a dongle somewhere on the net. Unfortunately I cant find it now but I found something better; A whole tutorial regarding Cyclone! It deals how to use the Cyclone software, which version to use and how to make a dongle. It also talks about the difference in disk rotation speed. Pretty good! Unfortunately the tutorial is written in German. I ran it through Google Translate and it seems to translate it ok.
http://www.mingos-commodorepage.com/tutorials/amigadiskcopy.phpTo be honest, I've never used Cyclone. I have some original that I want to create backups of, such as Turrican II and Pinball Dreams and Fantasies. However, I don't know if Cyclone will beat the copy protection. And for that matter, even if the disk is copied correctly, how will I know if the copy protection is defeated unless I play through the game? I'm starting to drift off topic. I hope this link helps!