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
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
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