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Tonight I've been researching a new burner for my Rob Roy based on an article "Gas Firing for William" C H Hopkins (Oz) in Model Engineer 18 July 1986 and "Propane Burner" Lindsay McDonnell Modeltec Magazine June 1989. These articles were the basis of successful burners being used on model locos in NZ for some time.
The idea is to get more gas an air into the system and better combustion. I've just spent a number of hours trying to find out what drill sizes relate to gas jet sizes numbers so I can quantify the #15 jet in my ceramic burner. A bigger number is larger hole but a bigger drill number is a smaller hole, so its not that. I've found a web page that gives the BTU/hr for various hole sizes vs PSI.
http://www.joppaglass.com/burner/lowp_chrt.html
http://www.joppaglass.com/burner/highp_chart.html
Anybody got any clues please?
While we are on the subject, if you are into this you may find this useful
www.eclipsenet.com/catalog/contents/Documents/EngGd/efe825tn.pdf
Pete
The idea is to get more gas an air into the system and better combustion. I've just spent a number of hours trying to find out what drill sizes relate to gas jet sizes numbers so I can quantify the #15 jet in my ceramic burner. A bigger number is larger hole but a bigger drill number is a smaller hole, so its not that. I've found a web page that gives the BTU/hr for various hole sizes vs PSI.
http://www.joppaglass.com/burner/lowp_chrt.html
http://www.joppaglass.com/burner/highp_chart.html
Anybody got any clues please?
While we are on the subject, if you are into this you may find this useful
www.eclipsenet.com/catalog/contents/Documents/EngGd/efe825tn.pdf
Pete