On Fri, 15 Dec 2017 17:46:23 -0000 (UTC), Arthur Wood
> wrote:

>trader_4 wrote:
>
>>> https://www.amazon.com/gp/product/B01N2XYORX
>> That's what I was telling him about in the other thread here, that I've
>> heard people have used one of those disco smoke gizmos. Seems you
>> should be able to rig up something to pipe it in. Plus, with a boom box
>> and some songs, you can have a business at parties and weddings as a DJ.
>
>I thank you for coming to my aid, and I apologize for not having "believed"
>in your previous suggestion. (See below why.)
>
>For some reason, I had thought that the "party foggers" had a big opening
>at low pressure (like the size you can put your hand through) but this one
>in the Amazon picture seems to have a one-inch opening with a tiny 1/4-inch
>nozzle.
>
>Is that right?
>
>If so, I don't see why it's not perfect for the task - if it generates the
>smoke at enough of a pressure to get us a couple of psi for a long period
>of time. It has to be in the goldilocks range of a few psi (maybe 2 to 4
>psi?).
>
>The output is 2000 CFM, which seems like a lot.
>Is there a way to *convert* that to PSI?
>
>The "wired control" might even be useful for one-man operation while
>debugging a vaccum leak on an engine.
>
>The machine holds 0.5 liters (1/8 gallon) where a gallon of the fog juice
>(propylene glycol perhaps?) is $20 which means the machine, over time, is
>cheaper than the fluid used to make the smoke!
><https://www.amazon.com/Gallon-Great-Party-Fog-Machines/dp/B005UQPPK4/ref=pd_sim_267_1/135-2052768-3676406>
>
>So I do agree, for forty something bucks, it's about the same cost as what
>it cost me to make that tin-can smoke machine that didn't work.
>https://www.turboimagehost.com/p/368...moke1.jpg.html
>
>Any idea how to calculate the PSI out from the 2000CFM spec?
You can calculate the PSI if you know the viscosity of the fluid and
the size of the orifice the fluid has to pass through. So you will
need to guess at the size of the orifice on the party smoke machine
and then look online for about 5 minutes to find a page that will let
you just plug the numbers in. I am pretty sure that searching for a
"conversions" web site will provide you with a solution. Why do you
need 2 to 4 PSI?
Eric