Getting more smoke from a postwar question

A resistor will NOT work.  The widely varying loads of the open frame Pulmore would cause performance to be abysmal if you could get it working at all.  Diode pairs are the right way to do the job, for a Pulmore motor, I'd probably be thinking 6A diodes.  You can do the exact same thing with a can motor, there you can use 3A diodes.

Do you know what the wattage rating of your 18 ohm resistor is? A 2 watt resistor will get hotter than a 5 watt resistor.

Original post war smoke elements were between 16 and 18 ohms. If the old smoke residue is cleaned out and using a fresh felt washer they will smoke well, especially if you use a good smoke fluid.

Pete

Had a 2020 with a burned out smoke unit.When Iinstalled the new one I unwound

one coil of wire off the new smoke unit. Cleaned the old  smoke pellet residue and installed a new pad.I use smoke fluid now instead of pellets and it smokes like a champ.l have been told that doing this may decrease the lift of the smoke element but so far so good.Have also bent the arm that actuates the piston in the smoke unit for a longer stroke that helped a little as well.

John K