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Hi John,
1st off..... thanks for showing concern with regard the new engine, most appreciated, however, I would say just go ahead and do your own as you had planned. Mine will not be a standard production item (not really cost effective) but I would be prepared to build one for anyone if they really wanted one.
CERAMIC BURNERS and GAS JETS....
I find the vertical ones work ok, but they do need to be driven a little bit harder than the horizontal ones.
This is mainly due to the somewhat reduced surface area available and the effects of flue gas flow is more pronounced...... the use of secondary air intake (around the periphery of the burner mount) is also very helpfull in getting a cleaner burn and gas flow through the horizontal flue.
Once the engine is attached and running, then by directing the exhaust steam (via an oil separator) up the inside of the funnel this works just like a blower and vastly improves combustion gas flow.
I have not found it necessary to fit, or use, a separate blower for raising steam.
The vertical boiler design I will post soon, whilst only 3" dia, can be built with 3 1/2" dia barrel if desired.
This boiler uses a horizontal 2" dia ceramic burner.
As for GAS JETS...... these used to be manufactured by CALORGAS.... but no longer.
TAYMAR took the range over from them and they, in turn, were then taken over by COLEMAN, however, they dropped the jet type in favour of their own products....and they wont supply them seperately.
I made my own for quite a while, however, the sizes I use (numbers 8, 12 and 16...these being 0.25mm, 0.3mm and 0.35mm dia respectively) are now available from
www.forest-classics.co.uk which saves me the bother of making them.
They also do a number 5 size (0.2mm) but as far as I know, nothing smaller.
I think the sizes you are looking for would be number 1 and number 3.
You could try 'ROUNDHOUSE ENGINEERING' since they make a lot of small scale live steam loco's and may well have the smaller sizes.
For Ceramic material go to
www.pollymodelengineering.co.uk and then look under 'BRUCE ENGINEERING' they have a downloadable catalogue which includes the ceramic plates (7" x 5") of the same material type I use..... I believe they may also stock some jets sizes..... not sure which ones though.
Hope this helps a bit.
Best regards.
Sandy ;D ;D
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