Date: Tue Apr 8 09:20:42 2008

Author: Paul Nord

Subject: Re: air tracks and air sources

We run 6 from a single 6.5 HP Shop Vac in an adjoining large closet.
There is a system of 4" PVC pipes connecting in the lab.

The great thing about this model is that it has a separate fan cooling
the motor. So even if you block off all of the primary air flow, the
motor won't overheat.

We've been running this for about 10 years now. I have a spare shop
vac sitting right next to it in case of failure. In the fall
semester, it probably runs ~20 hours a week, for 4 weeks.

Other hint: I mounted them up on a high shelf to prevent anyone from
getting the idea that they might be useful for vacuuming.

Bonus hint: You can also get a HEPA filter for these. That might be
useful for keeping very fine dust out of the air tracks. I've not
done that.


On Apr 7, 2008, at 11:30 PM, Bernard Cleyet wrote:

> If you have the room, use a shop vac. in another room, e.g. the
> stock or storage room and pipe in w/ pvc pipe*. Berkeley used Sears
> in the basement vacuums (have a low potential remote relay) in boxes
> w/ sound absorbent blanket. I think each "powered" four of their
> machine shop constructed tracks**. This is practical only if you
> have student workers or a subsidized shop.
> * UCSC has a powerful blower in the mechanical room that powers
> about 20X. IIRC, 6 inch pipe to the manifolds (two classrooms).
> **The best design ever; a U w/ the holes in flat bottom. Not
> sensitive to dings or warping. If any are interested, I'll send a
> photo'.
> bc
> On 2008, Apr 07, , at 10:38, wrote:
>> Any recommendations on good quality air track/blower systems? I'm
>> particularly
>> interested in finding a quiet air source. We have a couple of Pasco
>> tracks and variable
>> air sources. The catalog copy says the air source is "exceptionally
>> quiet", but that term,
>> I do not think it means what they think it means. (To be fair, our
>> sources are probably
>> about 15 years old, so maybe they've improved since then. The
>> picture in the catalog
>> looks the same, though.) I just can't imagine spending an afternoon
>> in a lab with 4 or 5
>> of them running.
>> Any experience with the Cenco "Quiet Air Source"?
>> Thanks!
>> Mary Ann
>> ***********************************************
>> Mary Ann Hickman Klassen
>> Lecturer
>> Dept. of Physics & Astronomy
>> Swarthmore College
>> 500 College Ave.
>> Swarthmore, PA 19081
>> phone: 610-328-8384 fax: 610-328-7895
>> **********************************************