Gippeto

This might offer some help... https://ronreil.abana.org/design1.shtml#Flame Regards, Al

Would an overly long tube create enough draft such that the burner would naturally run lean? Having some grief getting mine to run rich so I can even start trimming the mig tip back. Thanks, Al

Hello Frosty...or other interested folks. Just looking for your thoughts. Thinking I might need to extend the mig tip further toward the main pipe....it's still full length and at 1/2D currently. Started with the mig tip drilled to #54, and horribly lean. 1 1/4" pipe, 12.5" loa, standard 1 1/14" tee with one inlet plugged, mig tip drilled out to 1/16" and still full length. 5-20Psi propane On the bench; In the furnace; Thank you for any advice you have, Al