Re: Dynamic Air Pressure Filter Housing

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Subject:		Re: Dynamic Air Pressure Filter Housing
From:		Jack B. Hart (jbhart@onlyinternet.net)
Date:		Wed Jan 07 - 6:21 PM

At 05:21 PM 1/7/09 -0500, you wrote:
>
>About 0.14 inches of mercury (1.9 inches of water) at 55 knots, or less 
>than 1% of 1 atmosphere; 1/2HP for a 50HP engine (since output power is 
>roughly proportional to intake air pressure)... seems unlikely it'd be 
>noticeable.
>
>Can't hurt though, unless it comes loose and goes through the prop...
>

Dana,

I believe the pressure change will be greater than 1.5 inches of water, as 
the air is passing through the propeller is much greater than IAS.  I won't 
know what it is until I measure it, but if air velocity past the carburetor 
has to be much higher than 55 knots IAS.

Jack B. Hart FF004
Winchester, IN