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Two Blocked
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 | | 09/07/2008 3:06 PM |
| This morning I received an interrogatory e-mail about an article that I had written ten years ago in SitG. It was about getting Aster's B-1 Baldwin (0-4-2T) off the mantle and on to the mainline. I inadvertently deleted the message before I could answer it, and I can't find it in my deleted e-mail file. I did not recognize the e-mail's author, nor do I remember the gentleman's name.
I am posting my answer here, and hoping that he will see it, or that someone that knows him will steer him in this direction. My apologizes to everyone.
He had two questions: one was about the by-pass loop in the alcohol fuel supply tube, and the other asked my opinion of wire mesh (stainless steel cloth) as a wicking material in round wick tube burners.
The last is the easiest to answer. I have no first hand experience with wire cloth as a alcohol wick medium. I secured a lifetime supply of a$b&$t0$ (mystery material) packing from Aster Hobby Company back in 1995. This is the only stuff that I have had any real experience with in my own locomotives.
The B-1 alcohol burner that I depicted in the ancient article had a looooong "U" shaped bypass tube that allowed fuel to exit the central supply tube and route fuel around all three (used to be four) wick cups to the extreme end of the center supply tube. Im practice the modified fuel supply setup looked like a minature bugle. The theory was that the center supply tube could be fed from either end, and so there would be no chance of the foward wick starving for fuel. The approach works, others have duplicated it, and I only moved on to a "better" design several years later when I developed the present two, unequally sized, burner cup design.
The gentleman's first question was about a "U" tube bypass that became part of the fuel starvation solution for the stock burner. "Would it be all right to end the "U" tube bypass short of the end of the third wick cup"? "Say in the space between the two wick cups farthest from the fuel supply tank"? I don't see why not. but I don't see any advantage either. Please, if you try your approach, let me know the outcome.
Best regards,
Kevin | | | |
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