Not so much as a lot like as too much like Charles! I do have access to a scub divers' bottle for a quick top up of a low pressure tank from thathigh pressure one, but I still hope to build the steamplant though. Tony. ----- Original Message ----- From: "Charles & Dorothy Brumbelow" <cbrumbelow@xxxxxxxxxxx> To: <modeleng@xxxxxxxxxxxxx> Sent: Sunday, September 11, 2005 9:47 PM Subject: [modeleng] Re: Steam engine RPM? > Actually, Tony, you COULD replace one of the spark plugs in your > automobile > with a check valve and use that cylinder as a compressor. That was a tip > in > one of the early (prewar?) DIY magazines here in the states. Might have > been fine to fill up a tire after repairing a flat, but it sounds a lot > like > a potential bomb if you filled up a metal tank with the mixture of > gasoline > and air under pressure. Charles > 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.