[Elecraft] K3 KPA3 Fan Upgrade Question

[Guy Olinger, K2AV]

What would be the improvement over the original fans, based on the 
referenced specs below?  At high fan speeds, the airflow is limited by the 
intake grills on the case.  You can set the original fans on any level as a 
minimum flow using the configuration menu.

73, Guy

----- Original Message ----- 
From: "Brian Binkley" <kd8cpf at gmail.com>
To: <elecraft at mailman.qth.net>
Sent: Wednesday, May 13, 2009 8:11 AM
Subject: [Elecraft] K3 KPA3 Fan Upgrade Question


> Hello,
>
> I am currently in the process of upgrading the fans for the KPA3 100 Watt
> Amplifier module because the heatsink temperature gets too high for my
> liking. I am upgrading both fans to a fan with higher CFM output. Last 
> night
> I hooked both fans up to the KPAIO module to test and see if they will 
> work.
> When I am on fan power level one, the fans try to but are unable to start
> up. I have to bump them to start them spinning. Power level two has no
> problem spinning them up. When I went to power level four and then brought
> the power level to one, the fans did not have any problem continuing
> running. The fan specs can be found here
> http://www.sundialmicro.com/ipcqueen_dc_fan_606010_ball_bearing_3pin_2033_1199.html.
> Is there any components that I can add in line to provide the necessary
> power to start the fans up at power level one?
>
>
> Thanks
> Brian Binkley
> KD8CPF
> KD8CPF at gmail.com
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