Smoke unit

Many times.  Is this a brass or diecast locomotive?

Here's how I've mounted them in brass locomotives, this happens to be a picture from GGG for one of his upgrades.

https://ogrforum.com/...n-williams-berkshire

Thank you for your help.

What manufacturer / part number do you recommend as a good smoke unit for a one-size-fits-most application? 

I use the MTH AA-0000070 steam smoke unit for a majority of my upgrades.  In special cases I also use the smaller MTH single resistor smoke unit.

Thank you for the information!

Pine Run RR posted:

Thank you for the information!

Ditto!

I am starting a similar upgrade a Weaver GS-2 with sleuth smoke unit. Do I need to change the voltage going to smoke unit (are they a standard voltage)?

Nothing really "standard" about the voltage to smoke units, it depends on which one you're using.  If you use the MTH smoke unit for a TMCC upgrade, you need to change the resistors for a single resistor of no less than 20 ohms, and you can obviously go higher to the 27 ohm value that's standard for TMCC locomotives without voltage regulators.

John, are you just using a spring to hold it up, I use an MTH mounting bracket on my Williams J , I had to modify it a little but worked really well. The spring looks much simpler 

The spring is more than sufficient.  I JB-Weld them to the bottom of the smoke unit, and they hold just fine.  With the MTH smoke units, I can solder the stack extension brass tube to the threaded ferrule and remove that for easy removal of the smoke unit for service.