Most likely most of the noise is related to the "tip speed" of the fan. The
larger the diameter the higher the tip speed as related to a given RPM.
More blades and less RPM without sacrificing CFM is the item to watch for in
a replacement.
Case and point: I recall that the P-51 with its Rolls-Royce engine swinging
the 13 ft x 4 blade prop at take off RPM actually had the tips breaking
the sound barrier, although the plane was still on the ground. Now that's
noisy!
73
Bob, K4TAX
----- Original Message -----
From: "Marv Gonsior" <w6frmarv@dslextreme.com>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Tuesday, January 24, 2006 9:39 AM
Subject: Re: [TenTec] Titan 425 fan
At 07:04 AM 1/21/2006, you wrote:
Hi,
Have you tried replacing the fan mounting isolators they have probably
gone
hard by now.. My Titan was noisy from day one, and to reduce the noise
transfer to the chassis I loosened the mounting screws a little.
Tim
gm4lmh
===================================================================
Hello Tim,
THANKS for the tip and the next time I have it open I will sure see
how that works. That method has worked in the past with transformers
so I have no doubt that it could also help with the Titan fan.
73,
Marv, W6FR
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