Tel, the reason I went for the maximum speed is that, at 1.5 bore and 2.25 stroke it may well be a working, as opposed to display, engine. It could generate a reasonable power. I agree that for best viewing, a nice slow speed is best. Alan ----- Original Message ----- From: "Terry Lane" <tel@xxxxxxxxxxx> To: <modeleng@xxxxxxxxxxxxx> Sent: Wednesday, September 07, 2005 2:24 AM Subject: [modeleng] Re: Tr: Re: Steam engine RPM ? You sure don't Al, if it was mine I'd be aiming for perhaps half of AJ's suggested figures > If this is a working display model, you don't want it > operating so fast that the workings of the motion are > blurred, do you? > > Al Messer 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.