At 02:59 PM 2/22/06 -0500, you wrote: >Sounds like you already "know the drill" for doing a jacketed rim. - Jeff Jeff, Yes, but sometimes one needs a gentle reminder that there was/is a "drill." In this case, since the flywheel is 9"+ in diameter, the slices would have to be of quite large pipe. If anyone would like to have a look at a built example of the engine (with red brass castings) go to <http://community.webshots.com/photo/547881417/2035951370034675872TqdXbS# Regards, Harry MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.