Peter If you wish, I can send you off-list a drawing (in .pdf format) of a multitube boiler for a meths fired loco. This has been designed by Martin Sheridan for his gauge one locos. I use the design, modified a little for 16mm scale locos and have no problem in raising enough steam. The boiler has four tubes, 10mm external diameter and boasts a wet backhead. There are also up to four cross tubes in the firebox. The drawing is for a loco with a shorter boiler than the project (I think) but can easily be built to a longer length.
Keith At 17:43 24/09/2005, you wrote: >I guess I haven't given much thought to the volume differance, good point >especially on such a small boiler. Even with the cross tubes the single >flue will have much less heating surface then the seven 1/4" flues, less >than half if I figured it correctly. Would it be worth the trade-off? I >don't mind the extra work, this is practice for the boiler I need to make >for the G1MRA Project which will likely be a JVR B style. > >Peter Harjung > >----- Original Message ----- >From: <[EMAIL PROTECTED]> >To: <[email protected]> >Sent: Saturday, September 24, 2005 11:18 AM >Subject: Re: [SSLiveSteam] Smoke-tube sizing for meths? > > > > Peter, > > Personally, I would probably just stick to one 1/2" flue. It will use up > > less volume in your boiler. If anything, put some cross tubes in it, you > > will > > get more benifit. > > Bob S > >_______________________________________________ >SSLiveSteam mailing list >Send messages: [email protected] >Cancel subscription: http://postfix.45mm.com/mailman/listinfo/sslivesteam >Rules: http://www.45mm.com/sslivesteam_guide.html > > > > >-- >No virus found in this incoming message. >Checked by AVG Anti-Virus. >Version: 7.0.344 / Virus Database: 267.11.6/111 - Release Date: 23/09/2005 _______________________________________________ SSLiveSteam mailing list Send messages: [email protected] Cancel subscription: http://postfix.45mm.com/mailman/listinfo/sslivesteam Rules: http://www.45mm.com/sslivesteam_guide.html
