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Re: [Amps] re specs on Rotron 110AS blower

To: "Paul Kelley N1BUG" <>,"Fern Rivard" <>
Subject: Re: [Amps] re specs on Rotron 110AS blower
From: "Dan Hearn" <>
Date: Sat, 18 Aug 2007 18:02:33 -0700
List-post: <>
Pauls numbers are the ones shown on my sheet for anode diss 1500w. 73, Dan,

-----Original Message-----
From: []On
Behalf Of Paul Kelley N1BUG
Sent: Saturday, August 18, 2007 5:54 PM
To: Fern Rivard
Subject: Re: [Amps] re specs on Rotron 110AS blower

I can't help you with specs for that Rotron, but high speed blowers
are often noisy. I have been happy with my Dayton 2C647 blowers on
two amps. They run at 1500 RPM, and while certainly not silent they
make a lot less noise than most 3000+ RPM blowers I have seen. My
8877 spec sheet says it needs 35 CFM at .41" back pressure. The
2C647 will deliver 96 CFM at .4" according to its spec sheet (and 79
CFM at .5"). There is no such thing as too much air unless you blow
the tube out of the socket. A Google search for 'Dayton 2C647'
should turn up a few places to buy them, and specifications.
Incidentally I bought mine from some company in Ontario (they had a
great price on them) but can't recall the name of the place now.

Paul N1BUG

Fern Rivard wrote:
> I have located a Rotron 110AS blower with following specs:  3450
> rpm, 115 vac @ 0.2 amps, requires 1 mfd starting capacitor. Now,
> I need to know the cfm rating of this blower and is it sufficient
> to cool an 8877 tube. I tried a google search for that model but
> since it dates back quite a few years, I couldn't find anything
> on it. Also, I could not find the amount of air (cfm) required to
> properly cool an 8877 tube. Thanks from Fern
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