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Date: Thu, 31 May 2007 18:48:02 -0600
From: Bob White <rlwhite@comcast.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Intake CFM air flow
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Hi Bill,

I built a can around it out of aluminum.  The can clamped on at the
same place as the filter and it was about 6" dia or maybe a little
larger.  I then made a fiberglass air inlet that sealed to the can with
a strip of red silicon engine baffle.  I was hoping to generate some
ram air pressure, but didn't get a chance to measure it to see how good
it worked.  I'll take some pictures next time I get to the airport.

Bob W.

On Thu, 31 May 2007 17:24:39 -0400
Bill Bradburry <bbradburry@allvantage.com> wrote:

> Thanks, Bob.
> Did you enclose it or did you take the air from inside the cowl?  I am 
> wanting to put the filter inside the ram air tube from the front of the 
> cowl to the throttle body.  Building an enclosure around it makes it get 
> pretty large and that makes me need to move it to a location inside the 
> cowl that causes a fairly convoluted run of tubing.....sigh...
> 
> I am really open to suggestions...
> 
> Bill B
> 
> Hi Bill,
> 
> I used the K&N RR-2803 because it fit my throttle body and allowed air
> in thru the sides and center. I don't see anything on K&N's site that
> tells me it's area, but it seemed to work OK. I had it pointing
> straight to the front. It's 5.875" OD at the base, 5.25" OD at the top,
> and 5" high and fits a 2.75" throttle body.
> 
> Bob W.
> 
> On Thu, 31 May 2007 16:16:32 -0400
> Bill Bradburry <bbradburry@allvantage.com> wrote:
> 
>  > Does anybody know what the CFM intake air flow is on the rotary? I am
>  > thinking about the size of air filter I would need. For instance, what
>  > size K&N filter would I use? I would like to provide ram air thru the
>  > filter.
>  >
>  > I was considering the conical type filter, but it looks like the size of
>  > it may be a show stopper. I am pretty limited in the space available
>  > for a filter and do not want to make too convoluted a path to the
>  > throttle body. What is the best guess on the number of square inches of
>  > filter required?
>  >
>  > Any help would be appreciated.
>  >
>  > Thanks,
>  > Bill B
> 
> 
> --
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