Ian (G3SEK) asked:
>Who are the makers of good, low-cost, amateur-size blowers in the USA,
>please? The only firm I've heard of are Dayton, but do the amplifier
>manufacturers have other sources?
>
>Any contact addresses, or better still, web sites? (Routine web searches
>only produce info on blowers for HVAC or K5PRO-size tubes, or more info
>than anybody ever wanted to know about Dayton, Ohio :-)
HEY, I don't use big blowers! I use water cooling. The blower on the
filament and seals on the thing I'm working on is only a Rotron, one of
their little regenerative blowers, like a turbine. Sounds like a turboprop
jet engine. We fired it up today with the tube in socket, and the back
pressure was 6.4 inches of water across the socket, which is exactly what
we calculated. So it works well.
I did work on a 30 KW FM xmtr design that had a 3-4 hp Cincinatti blower in
it once. It was sort of loud.
It was a cast centrifugal blower, that supplied into 6 inches pressure with
many CFM, for a 4CX20,000A.
Sources of scroll, squirel cage, centrifugal blowers:
McLean Engineering, Princeton, NJ (609) 799 0100
NMB Technologies (mostly Muffin style fans)
Rotron (they have divisions, like Comair) check web site
Fasco fraction hp blowers, St Louis, MO
Torin
Sorry I don't have numbers and addresses for all, but my catalogs are quite
old. They should be searchable on the web, now that you have the names.
Rotron has a big product line, as I mentioned above. You have to get the
correct division for the fans you want from them. They are high quality if
you stay away from the all plastic units. Fasco is sortof the cheapie, thin
sheet metal housings. I believe that they supply folks like Granger/Dayton
etc.
John
K5PRO
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