[TheForge] Fw: forge blower, dimmers, etc.

[David E. Smucker]

Similar, but different.  A squirrel cage only has small "blades" on the 
outside of a cage.  A centrifugal has large blades usually mounted on a disk 
that extends from the hub all the way to the outside diameter.  Usually a 
squirrel cage is designed for high volume at lower pressure while 
centrifugal are usually designed for higher pressure at lower volume.  YMMV. 
There are many things that effect the design from the shape of the blade to 
the way the static parts of the blower are made.  Speed of the blower has 
major effects too.

I have seen squirrel cage blowers that can give quite a bit of pressure and 
centrifugals that are designed for high volume.

Dave

--------------------------------------------------
From: "Marc Godbout" <marc at ironringforge.com>
Sent: Monday, November 30, 2009 2:30 PM
To: "Blacksmithing List Sponsored by ABANA" <theforge at mailman.qth.net>
Subject: Re: [TheForge] forge blower, dimmers, etc.

> Isn't a squirrel-cage blower the same as a centrifugal?
>
> On Mon, Nov 30, 2009 at 9:22 AM, Bruce Freeman <freemab222 at gmail.com> 
> wrote:
>> A squirrel-cage blower might not provide enough pressure for a coal
>> forge. A centrifugal blower is better.
>>
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