I can't give the web-site reference, but boiler lagging tests by Chuck Hackett in the larger scales showed the following -
adding a jacket, giving a trapped air gap, made a difference adding insulation ie. lagging, produced NO additional benefit. better however to have something to provide a hard foundation for the jacket & to minimize denting. With our sizes ie 1/20 & 1/32 I have used thin cork & thin card, & also the thin ceramic stuff. Theoretically, cork might stink, card disintegrate & certainly with the ceramic you will spend a bit of time getting the little shards out of your fingers. Corrosion should not be a problem. I have had a loco with thin tinplate jacketting which has not corroded after many years. Art Walker ----- Original Message ----- From: "Z.R. Struzik" <[EMAIL PROTECTED]> To: "Multiple recipients of sslivesteam" <[EMAIL PROTECTED]> Sent: Wednesday, October 02, 2002 12:21 PM Subject: boiler insulation > > Dear Friends, > I have about 2.0-2.5mm space between the boiler and the > jacket and I wonder whether insulating the boiler would > be a good idea and what the best material for this would be. > I am considering ceramic sheet like the one used for the > smokebox insulation or mineral or glass wool. > The only thing that I am concerned with would be possible > moisture accumulation and corrosion to the boiler. > Many thanks for any advice! > Happy steaming, > Zbigniew >
