Looking for suggestions and part numbers to replace dual Seuthe units in a brass Weaver T-1 with either a Lionel or MTH fan driven smoke unit that will fit in this engine and also work with an ERR TMCC upgrade.
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Funny thing, I have done that exact upgrade. I use the MTH fan driven smoke unit. Here's how I mount them, this is a different brass locomotive, but the process is exactly the same for your T1. I JB-Weld a spring on the bottom, then I solder a properly sized and length stack extension to the screw-in funnel for the smoke unit. You then slide the smoke unit in, and screw the stack extension in from the top after it's positioned. This allows for easy removal of the smoke unit for the inevitable maintenance later. 
If you want to have the dual smoke stacks both active, I make a little funnel out of brass and shape it to the shell curve. I seal it with some sticky backed foam sheet cut to size.
Of course, for TMCC, I remove the stock resistors and use one 20 ohm resistor nearest the stack position. For the fan power, I use the Super-Chuffer II, and for the chuff generation I use the Chuff-Generator. This combo gives you four chuffs/rev, great looking chuffing, smoke at idle, Rule-17 lighting control, and automatic cab light control. You can also wire in ground lights as the Chuff-Generator has provision for automatically switching them. Ground lights are on until about 10 scale-MPH, then they go off.
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Thanks for all the good tips Gunner. Really like the concept of mounting the spring on the smoke unit sure makes for easy installation and removal. What is the part number of the MTH smoke unit you have pictured? This is a project for a friend on a tight budget so no Super Chuffer/Chuff Generator this time just a reed switch.
Well, you'll have to provide a 5VDC power supply for the smoke motor in that case, I obviously power it using the Super-Chuffer. The part number for the steam smoke unit I'm using is: AA-0000070.
