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| Building a 31/2" Gauge Locomotive Engine |
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| Divided he ad:
Nicely thought out and executed Stew :thumbup: I have just two questions.(same answer I suppose?) possibly general knowledge to those of you who revere the locos? But anyway.... here goes, why does the chimney get a copper liner? And, What would happen just leaving the brass chimney without the liner? :scratch: Ralph. |
| Stilldrillin:
--- Quote from: Divided he ad on March 25, 2010, 02:13:56 PM ---Nicely thought out and executed Stew :thumbup: I have just two questions.(same answer I suppose?) possibly general knowledge to those of you who revere the locos? But anyway.... here goes, why does the chimney get a copper liner? And, What would happen just leaving the brass chimney without the liner? :scratch: Ralph. --- End quote --- I thought that! ::) But didn`t like to ask........ David D |
| sbwhart:
--- Quote from: Stilldrillin on March 25, 2010, 02:42:26 PM --- --- Quote from: Divided he ad on March 25, 2010, 02:13:56 PM ---Nicely thought out and executed Stew :thumbup: I have just two questions.(same answer I suppose?) possibly general knowledge to those of you who revere the locos? But anyway.... here goes, why does the chimney get a copper liner? And, What would happen just leaving the brass chimney without the liner? :scratch: Ralph. --- End quote --- I thought that! ::) But didn`t like to ask........ David D --- End quote --- MMMMMMMMMMMMMMMMMMMMMMMMMM Good question :scratch: I think it has something to do with the fact that the chimney extends down into the smoke box, bit like an Iceberg under the water, you can see it her the drawing on the right, the copper liner is an easy way to do this. This is so it can catch the exhausted steam which creates a draft drawing the air through grate and improving the combustion of the coal getting the firebox good and hot and making steam. Also I don't think the brass will like the corrosive effects from the flue gases, the zinc may react to them. Hope this makes sense Stew |
| John Hill:
Great project Stew, I really enjoy following your progress on this one and every part is more impressive than the previous! |
| Divided he ad:
--- Quote ---Hope this makes sense --- End quote --- Fair enough Stew, decipher the drawing properly the first time! Thanks for the answer.... Now, as you were :thumbup: :) Ralph. |
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