AW: REFLECTOR: Pat Shea's Air filter

[Scott Derrick]

Ueli,

Nice filter box.  Is you alternate air flap spring loaded?

Scott

Ueli Christen wrote:

>Keith,
>
>pictures from the Airfilter witch I made on the lower Cowling.
>
>It works since 150 h, with no problem.
>
>Ueli
>
>www.christen-air.ch
>
>sorry, written only in German
>
>-----Ursprüngliche Nachricht-----
>Von: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] Im
>Auftrag von Pat Shea
>Gesendet: Mittwoch, 13. Juli 2005 09:03
>An: Velocity Aircraft Owners and Builders list
>Betreff: Re: REFLECTOR: Pat Shea's Air filter
>
>Keith,
>
>It's custom, but more like a three-off as in it took
>three tries to get it right. The filter box design is
>similar to Jean Prudhomme's on TVBF:
>
>http://www.tvbf.org/gallery/?dir=engines%2Fplenum_jean_prudhomme
>
>I didn't use his diaphragm design opting for a short
>run of scat to the servo from the filter box instead.
>Also, I'm pulling my induction air from the side of
>one of my runners using scat again to connect to the
>air filter box. Here's some good basic filter/plenum
>box design info provided by Ellison:
>
>http://www.ellison-fluid-systems.com/FAQS/inlet.htm
>
>At first, I only had the induction flange (essentially
>a fiberglass tube) sticking into the runner about
>1/2". This didn't provide any ram at Vne (at least it
>was neutral - no loss). Now I've got it sticking in
>about 3" and I'm getting about 1" ram at Vne. That's
>w/ a filter. I'm going to pull the filter out and see
>how much of a ram penalty I'm paying for filtration.  
>
>Hope that helps, Pat
>
>--- Keith Hallsten <KeithHallsten at quiknet.com> wrote:
>
>  
>
>>Pat Shea,
>>
>>I see in that same set of photos that you have an
>>air filter mounted low on
>>the firewall.  I'm looking for something similar. 
>>Is that some sort of
>>reproducible product or a custom one-off?
>>
>>Keith Hallsten, XLFG
>>    
>>
>
>  
>
>
>
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