[Cob] spray gun, hopper gun, texture sprayer, tirolessa

[Amanda Peck]

Just in case Bill sent this just to me instead of the list (I've never done 
that, not since the last time anyway).

It's not what the sales site says, and it's possible that the manufacturer 
is being extremely conservative, but apparently these figures are from the 
horse's mouth.   I had thought that the CFM/horsepower numbers looked odd, 
but just checked some random compressor specs and that is about right.

What is possible is that even (especially?) with a good compressor you'd 
spend more time mixing and loading than spraying.  Something that might also 
be true with the manual job--if your arms didn't give out first.



----Original Message Follows----
From: "Bill&Julie" <wkbjkb3 at mn.rr.com>

Subject: Re: [Cob] spray gun, hopper gun, texture sprayer, tirolessa
Date: Wed, 22 Mar 2006 11:56:42 -0600

OOps..   Heads up....   Sorry to jump in,, I belong to the Ferro-Cement
List.
And that is the question that I ask the maker of the Tirolessa sprayer..

the tirolessa Sprayer needs at least an air compressor of (5HP, 40 gal tank,
7cfm)...

The problem of air, is not the pressure,,, But the volume of air that is
needed..
While a small compressor will fill the tank for a few seconds of trigger
time,
pfft,,, it takes many horses to keep the tank full if you hold the trigger
down.
The closer you come to having a compressor big enough to maintain a constant
flow at the right psi and volume,, the smaller tank you need...

Conversly,,,  if the trigger time Can be spread out,, you can get by with a
small compressor,, but you will need a large tank to store enough air to
supply for the trigger time.. And the little compresssor will have to run
longer to fill the big tank...

Also,, not all small compressors are designed to run continiously,
they need to cycle off to cool down...

lots-a-info bill  ~¿~