Here are a couple of tips....First regulate your air at the blaster to about
90 psi, any more just wastes air and shatters the sand on impact making it
less effective and not as sharp second time around if you recycle. Second,
check your tank for condensation, you could have a couple of gallons of
water in the tank and not know it, which will reduce your reserve. Third,
replace the tip when it gets to warn out. I can tell when the compressor
can't keep up and I go through the sand real fast. Forth, if the sand seems
to "pulse" out of the tip, close the metering valve, you are blowing to much
sand and it is not efficient.
I just have a 5hp 1750 rpm 220v single stage, twin cylinder Quincy on a 60
gal tank and when using a 1/8" tip on my TIP 99 (holds about 40 lbs)
pressure blaster my compressor will cut off while I am blasting. I can get
about 20 min of straight blast time before needing to refilling the hopper.
Works for me!
Mike Boteler
'56 8400 Wrecker
Hughesville, Maryland
----- Original Message -----
From: "Deve Krehbiel" <dkrehbiel@kscable.com>
To: "OleTrucks" <oletrucks@autox.team.net>
Sent: Saturday, May 20, 2000 8:37 AM
Subject: [oletrucks] Air Compressor Update
> I have some pretty good news for those of you who are thinking about more
> compressor power. I have a 6-1/2 horse, 120 psi, 10CFM compressor and it
is
> simply not enough. When using the blast cabinet I can maintain 60 psi max
> with the compressor running non-stop. Worse trying to use a DA Sander. It
> stops completely after about 20 seconds unless I hover very lightly over
the
> work. Die grinders, air drills, etc.. same story. I siphon sandblasted my
> entire cab and sheet metal with 60 psi and it took me 6 days on the cab
and
> another 7 days or so on all the rest of the sheet metal. It was annoying
to
> say the very least.
>
> I got input from some of you and researched a bit further and decided to
> DOUBLE the output (the CFM I was getting was closer to 6 than 10) to about
> 12-16 CFM at 120 PSI by simply adding another like compressor into the
mix.
> I purchased a nice Campbell/Hausfeld compressor (same specs as the other
> one) and simply added it into the existing air line. Since the specs are
the
> same, there is no adjustment necessary. It doesnt matter which one comes
on
> first (in this case the new one is set slightly higher than the old one)
> because its highly improbable that they will ever come on at the exact
same
> time. With two compressor pumps pumping the pressure up, the very minimum
I
> now get when doing my best (using the blast cabinet or the DA Sander) is
100
> PSI and as a norm about 110. It completely solved my problem. It will use
> less electricity than before since the motors dont stop and start nearly
as
> much and the only drawback is the space needed for two compressors.
>
> Another advantage is the cost. I can purchase these floor models at $397
> each from Harbor Freight and they are the good Campbell/Hausfelds. So,
> another $400 solved the problem. The other solution was a $1300 15 horse
two
> stage so I saved a lot of money. I figure I can run almost anything now.
If
> only I would have done this a few months ago but isnt that how it works?
>
> Deve Krehbiel
> Hesston, Kansas
> 1950 3100 * 1949 3600
> www.speedprint.com/Deves50/index.html
>
>
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
|