flyrotary@lancaironline.net Mailing List Archive

Although "radius" will get you most already, I found the "resonance"-fog interesting.

All but the ellipse form will have a cloud of mixture outside the bellmouth.

The Ellipse has only a very shallow cushion right on the bellmouth.

Interesting if you fire your injectors directly into the bellmouth....

On 10/17/07, wrjjrs@aol.com <wrjjrs@aol.com> wrote:

Robert,

Try TWM or Jenvey (Both British) or Summit Racing in the good 'ol USA.

Bill Jepson

-----Original Message-----
From: Rob <rob@mum.edu>
To: Rotary motors in aircraft < flyrotary@lancaironline.net>

Sent: Wed, 17 Oct 2007 12:56 pm
Subject: [FlyRotary] Re: BellMouth Article

Can anyone tell me where to get a bellmouth to attach to my intake manifold which I still have to make for my 20B.
Does someone make these ready made or do I have to machine it myself.
Robert

Robert Bollinger
FM1099 MUM
Fairfield, IA 52557
rob@mum.edu
Home (641)472-7000ex2068
Cell (641)919-3213
----- Original Message ----- From: "Ernest Christley" < echristley@nc.rr.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net >
Sent: Wednesday, October 17, 2007 2:49 PM
Subject: [FlyRotary] Re: BellMouth Article

> Dale Rogers wrote:
>> In our application, there is less attenuation, but a 1.5 hp increase -
>> for just changing a contour in the inlet - is almost "free" power..
>>
> I especially liked how the author characterized the different contours. > Just any ol' radius will get you most of the payback, but there are slight > incremental improvements to be had with more manufacturing effort. He > makes it very easy to decide how much work you're willing to invest.
>
> --
> Homepage: http://www.flyrotary.com/
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