In alt.home.repair, on Fri, 15 Dec 2017 17:00:37 -0800 (PST), trader_4
wrote:

On Friday, December 15, 2017 at 7:51:31 PM UTC-5, Clare Snyder wrote:
On Fri, 15 Dec 2017 17:17:05 -0500, micky
wrote:

In alt.home.repair, 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?

Why are you concerned with PSI. AIUI, you only need enough pressure to
get the smoke out of the machine, or out of the hose**. Plainly it has
that much pressure, or the machine wouldn't function for its original
purpose.

After that the smoke just has to float around near the vacuum leak and
the vacuum will suck it into the engine.

Again, you have NO IDEA what you are talking about, Micky. The smoke
is pumped INTO the system, with the engine not running - under a low
pressure to force it OUT through the leak.

If anything too much pressure would make the smoke zoom by the leak
without stopping. LOL Well, not unless it was r eally fast, you'd
still probably see some of it get waylaid and sucked into the engine

Gettin in deeper, Micky

**Or are you saying it needs enough pressure to get through the hose?
The pictures don't show it being used with a hose, but if it doesn't
have enough pressure to get it through the hose, then skip the hose and
just blow from the machine to the engine. You can put the machine on a
chair or stepladder if need be. You can hold it closer to the engine
if need be.

The pictures show the smoke going out 3 feet or more. That seems like
enough pressure to me, and a bigger problem is likely that there is too
much smoke. Is that why you want to use a hose? If there's too much,
cut a hole in a big piece of paper near the engine so that only so much
can get through the hole. It's not like you have to do this for 50,000
miles, only long enough to find the vacuum leak.

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?

No.


Typically, fog is created by vaporizing proprietary water and
glycol-based or glycerin-based fluids or through the atomization of
mineral oil. This fluid (often referred to colloquially as fog juice)
vaporizes or atomizes inside the fog machine.
https://en.wikipedia.org/wiki/Fog_machine

Uh oh, Micky, I don't think Clare likes you.....

He and I have been over that, remember? But at least he pointed out
that the engine wasn't running. Neither you nor the video I watched a
couple months ago about how to built one's own mentioned that.

Watch out, he'll have you in his blocked bucket next.