A/F vs A/FS (Class "A"/ Furnace vs Class "A"/ Furnace Supercharged as we used to say)
----- Original Message -----
From: "Clint D" <driggars@...>
> I still run the forced air burner with mine, I kind of like it because I
> feel that I can have a little more adjustment when needed.
=== Exactly my point. With infinite control over both air and gas by
twisting a knob and idiot can get it to burn however he thinks is right.
Few, if any, skills or knowledge required and very little common sense. It
is just my style: have no idea what you are doing but build in enough
adjustment range that you may get it to work :o)
> But I was impressed with the unforced air burner, I tried one before and
could not get
> it to work half as good.
=== My experience exactly. I probably should qualify that by saying I was
experimenting with unproven designs, techniques and conditions, little
knowledge and slightly less research.... What we professionals call "a wild
> I am building a couple of more furnaces, the next burner will be with out
> blower, this way I have my choice of both worlds.
=== Once again: Me too!
I have a very small burner which, IIUC, was made by the illustrious Dr.
Frankenburner. I am reluctant to use it in a furnace because it serves so
many other functions so well. It was last seen clamped to a pistol grip and
being used in lieu of a rosebud torch tip on my O/A rig. Forget comparing
the efficiency of a blown propane furnace vs unblown. Try comparing the cost
of operating a propane burner vs the cost of operating an O/A torch with a
HUGE tip instead. You will quickly see what I mean.
When you get through with that exercise, run some motion and time studies on
converting a NA burner to a different application vs doing the same with a
forced air burner. I can have the NA burner in a foundry furnace or heating
a pot of soup in less than a minute.
Don't tell Mike I sais this but the forced air burner only has two
conditional advantages: (a) The parts list may favor some junk piles more
than others. (b) No talent required. :o)