Re: Making a smoke machine forcefully blast out the smoke.
 

Try mounting an 80mm PC case fan inline with an air duct (PVC or aluminum duct pipe works well, and a larger diameter pipe is perfect for placing over the nozzle of your fog machine) before "Valve A"

That might be able to push enough fog into the system as you need, and requires little re-working.

Re: Making a smoke machine forcefully blast out the smoke.
 

I know its pretty late now but i just checked CD for the first time in almost a month but...

I work with fog machines pretty much every day, not the crappy 20 dollar ones you get at spencers either. The good quality fog machines put out alot of thick smoke. The average machine run for a few seconds and fills the room to a point that you cant see infront of you! And thats not even one of the big dogs.

The biggest problem i see with the cheap ones and thier poor output is a few things. First off the fluid. There are many kinds of fluid, some based off of oil some off of water and some super secret versions. The next thing is the pump. Inside of a basic fog machine you have a pump, and heater coil. If your heater coil gets hot enough, you could try running a higher flow pump. We have some machines that use compressed air to actually force the fluid through the core and out the end for really powerful shots.

Once i saw it was for a dragon head moving, and i know this is late, but really you shoulda just gotten a can of Dust-off or whatever brand of compressed air, turned them upside down and let them do thier thing, you get a nice 4 foot blast out the end on a good day. Too late i guess though.