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Now for the fun with those big cylinders trying to saturate your fire with lots of condensate
It sounds as if you have the same problem as my FWRR 'Ruby' and other similar locos. We found that the bore of the stack was critical. One of our burned-finger brethren drilled out a standard 'Ruby' stack and found it improved the fire situation. Using that info, I replaced mine (long tall FWRR stack, 1/4" ID - a bit tough to bore out.) with a 7/16th" ID stack from Trackside Details. It solved the problem.
The issue seems to be that the fire needs a through-flow of air. When a big glob of condensate comes out of the chuff pipe in the stack, it blocks the flow and the fire goes out. A wider stack enables it to breath around the blobs. [Maybe the locos need a good hearty st4eam blower under the stack to disperse the blobs!]
http://www.mylargescale.com/Community/Forums/tabid/56/forumid/11/tpage/1/view/topic/postid/12583/Default.aspx#12583
It sounds as if you have the same problem as my FWRR 'Ruby' and other similar locos. We found that the bore of the stack was critical. One of our burned-finger brethren drilled out a standard 'Ruby' stack and found it improved the fire situation. Using that info, I replaced mine (long tall FWRR stack, 1/4" ID - a bit tough to bore out.) with a 7/16th" ID stack from Trackside Details. It solved the problem.
The issue seems to be that the fire needs a through-flow of air. When a big glob of condensate comes out of the chuff pipe in the stack, it blocks the flow and the fire goes out. A wider stack enables it to breath around the blobs. [Maybe the locos need a good hearty st4eam blower under the stack to disperse the blobs!]
http://www.mylargescale.com/Community/Forums/tabid/56/forumid/11/tpage/1/view/topic/postid/12583/Default.aspx#12583