|
|
Hi Bill,
Here is one shot of the air intake. There are some more at
http://www.bob-white.com/album/main.php?g2_itemId=532
There is one piece missing from the photos. I didn't connect the air
filter directly to the throttle body. There was an alternate air
source that added several inches to the length. The last photo is a
picture of the box the alternate air device came in with the P/N. It
was broken, and I threw it away. I attached a picture of a similar unit
that I found on ebay (item 160048910751). I never tested this to see
how effective it would work.
Bob W.
On Fri, 01 Jun 2007 08:16:10 -0400
Bill Bradburry <bbradburry@allvantage.com> wrote:
> Thanks Bob and Ed.
>
> I would appreciate the pictures, Bob.
>
> Ed, I expected a much higher flow. I thought that it would be in the
> neighborhood of 600-800 CFM! I guess I have been spending too much time
> reading the carburetor adds for V8s....
> I think that the 278 CFM would translate to an air velocity of about
> 48.25 MPH going through my 3 inch throttle body. That seems like a
> gentle breeze! Maybe I am spending too much time trying to remove
> restrictions to the air flow in the inlet?? :<)
>
> Bill B
>
>
>
> Subject:
> Re: [FlyRotary] Intake CFM air flow
> From:
> Bob White <rlwhite@comcast.net>
> Date:
> Thu, 31 May 2007 18:48:02 -0600
>
> 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.
>
>
> > Subject:
> > Re: [FlyRotary] Intake CFM air flow
> > From:
> > "Ed Anderson" <eanderson@carolina.rr.com>
> > Date:
> > Thu, 31 May 2007 19:22:24 -0400
> >
> >
> > Bill, at 6000 rpm the airflow is 277 CFM assuming 100% Ve. Here is a
> > formula
> > for calculating airflow for the rotary.
> >
> > Air Flow (CFM) = (40 cubic inches per face)*2(number rotors) * 3(faces
> > per rotor)*rpm of rotors(= E shaft rpm/3) /1728 (conversion to CF) =
> > 40*2*3 *(6000/3)/1728 = 240*2000/1728 = 277.77 CFM
> >
> > Or simplifying Air Flow (CFM) = 80*RPM/1728 = 277.77 CFM air flow at
> > 6000 rpm for a 2 rotor.
> >
> > Ed
>
> --
> Homepage: http://www.flyrotary.com/
> Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html
--
N93BD - Rotary Powered BD-4 - http://www.bob-white.com
3.8 Hours Total Time and holding
Cables for your rotary installation - http://www.roblinphoto.com/shop/
|
|