I built an Aster Sterling Single kit for a friend a while back that had the same setup. The draft was so strong it pulled the flame well into the boiler tubes and almost sounded like a gas burner! Sorry but I don't remember what distance the wick tubes are from the boiler but I think too close is much more of a problem then too far away.
Kindest Regards, PeteH ----- Original Message ----- From: "Steve Shyvers" <[EMAIL PROTECTED]> To: "Small-scale live steam discussions" <[email protected]> Sent: Monday, April 23, 2007 4:27 PM Subject: Re: [SSLiveSteam] Alcohol Firing a Standard Roundhouse Butane Boiler > Kevin and Lord Geoff, > > This is only the Mark 1 model! Doesn't even have wheels fitted! Still > some > work to do before it rolls under its own steam. > > Lord Geoff: can you tell me what the clearance should be between the top > of > the wick tubes and the boiler or crown sheet in a typical gauge 1 boiler? > Right now I think I have to much clearance - perhaps 25mm - between the > wick > tubes and the bottom of the boiler. > > Steve > > > On 4/23/07, Kevin Schindler <[EMAIL PROTECTED]> wrote: >> >> Steve, >> Well done! I too have been thinking about this for a few years, but like >> Vance, I never did anything about it. I have 4 RH gas fired jobs plus one >> Lady Anne Chassis and Boiler Kit in the waiting. That kit project maybe a >> good place to apply your new found technology. I would love to have at >> least >> alcohol fired locomotive. Variety is the spice, don't cha know. >> >> Please bring your work down to Sacramento this July, I want to give it a >> good look. Thanks in advance. >> >> Cheers, >> Kevin >> Estancia Fortuna >> www.narrowescape.com >> >> >> ----- Original Message ----- >> From: "Steve Shyvers" <[EMAIL PROTECTED]> >> To: "Small-scale live steam discussions" <[email protected]> >> Sent: Monday, April 23, 2007 7:23 AM >> Subject: [SSLiveSteam] Alcohol Firing a Standard Roundhouse Butane Boiler >> >> >> > Succeeded yesterday with a successful experiment to alcohol-fire a >> > Roundhouse single-flue butane boiler. It was a bench test using a >> > simple >> > add-on firebox and a two-wick burner. No fancy calculations involved. >> Most >> > dimensions guesstimated. This first test with little more than a >> > mock-up >> > of >> > an external firebox blew the safety after not too many minutes and >> simply >> > amazed me. My last two loco projects were not brilliant in the firing >> > department until after a lot of experimentation and rebuilding. >> > >> > The firebox was fabricated from olive oil can sheet metal and >> > silver-brazed. >> > It fits under the aft 50mm of the boiler, and an extension wraps up >> around >> > the back of the boiler to connect the firebox to the existing single >> flue. >> > The wicks are positioned below the boiler's aft end, which makes the >> > boiler >> > a C-type. Right now the boiler wrapper is holding the firebox onto the >> > boiler by means of flanges along the upper edges of the firebox that >> > are >> > slipped under the wrapper before it's cinched tight. Properly it should >> > have >> > a more secure method of mounting, and there should be some sort of >> sealant >> > to prevent leaks that might interfere with the draft. >> > >> > The burner's two wick holders are each 11mm inside dia and 20mm deep >> > inside >> > (fabricated from std copper pipe and pipe caps.) The wick holders are >> > spaced >> > 20mm apart. I did a proper job and silver-brazed the burner and fuel >> sump >> > assemblies. The idea was that if the experiment were a success, then >> > these >> > parts would be good for the final version and not need to be made >> > again. >> > Otherwise they could be re-used in some other project. >> > >> > To create a draft for the fire I rigged a blast nozzle in the smokebox >> > (standard Roundhouse) and fed it with an air jet from a garden sprayer >> > that's been setup as a low-pressure compressed air supply. The blast >> > nozzle >> > was positioned below the narrowest part of the stack a distance equal >> > to >> > the >> > three times the stack's narrowest inside diameter. The nozzle height is >> > adjustable, and some experimentation must be done for the optimal blast >> > nozzle oriface size and position. Blast nozzle (a piece of K&S 1/8 inch >> > brass tubing) oriface was 3/32 inch for the test. Probably bigger than >> > necessary. >> > >> > In a few days I will try to post a photo or two of the bench test >> > setup, >> > the >> > burner assembly, and the firebox. >> > >> > Steve >> > Duke of Spam >> > -------------- next part -------------- >> > An HTML attachment was scrubbed... >> > URL: >> > >> http://postfix.45mm.com/pipermail/sslivesteam/attachments/20070423/0d70843a/attachment.html >> > _______________________________________________ >> > SSLiveSteam mailing list >> > Send messages: [email protected] >> > Cancel subscription: >> http://postfix.45mm.com/mailman/listinfo/sslivesteam >> > Rules: http://www.45mm.com/sslivesteam_guide.html >> > >> >> _______________________________________________ >> SSLiveSteam mailing list >> Send messages: [email protected] >> Cancel subscription: http://postfix.45mm.com/mailman/listinfo/sslivesteam >> Rules: http://www.45mm.com/sslivesteam_guide.html >> >> > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > http://postfix.45mm.com/pipermail/sslivesteam/attachments/20070423/b3964519/attachment.html > _______________________________________________ > SSLiveSteam mailing list > Send messages: [email protected] > Cancel subscription: http://postfix.45mm.com/mailman/listinfo/sslivesteam > Rules: http://www.45mm.com/sslivesteam_guide.html > > > _______________________________________________ SSLiveSteam mailing list Send messages: [email protected] Cancel subscription: http://postfix.45mm.com/mailman/listinfo/sslivesteam Rules: http://www.45mm.com/sslivesteam_guide.html
