The anemometer will add a little flow resistance. Charlie’s tuff test may be easier to visualize while trying different during vanes. The prop is rated for an IO540  or up to 300 HP. Surprisingly most constant speed props rated for 180 hp + weigh in at 34-36#.

 

Bobby

 

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]
Sent: Friday, January 29, 2021 11:02 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Ross Farnham - Cooling video

 

Bobby, I am going to bring down a leaf blower with my anemometer and take measurements. Will add some turning vanes and test on the ground. This is the tinkering I like to do, now that I have a flyable plane. Holly crap, 48lbs for electric prop?

Charlie, thank you for the pictures (and videos). I wonder with my digital electronics, if I can get accurate enough to measure the pluses. Place two pitot tubes facing front and back inside the ducting. Hmm interesting. I agree with you that the wedge in theory is different than in practice. My ducts are the same idea as yours, so will add the turning vanes.

Jeff, I wish we could exit out exhaust out the sides like in the Bull Moose. I think with our high velocity of exhaust exit speed, we must be able to harness that energy to help pull air out of the cowl. Just a trade off of having a short exhaust dumping out, or long exhaust under the cowl.

Le Roux, thank you for the pictures. Right now I'm trying to duct my side oil rad, down and out the cowl. If I need to get a bigger oil rad, I'll have to move things around and add side adjustable cowl louvers I think.

 

- Matt Boiteau

 

 

On Fri, Jan 29, 2021 at 3:26 PM Le Roux Breytenbach breytenbachleroux@gmail.com <flyrotary@lancaironline.net> wrote:

Here is a link to the old contact magazine on old installations.

You will see the side louvers on Ed Anderson RV6A

Maybe he has still photos of the side louvers in his engine cowl.

Think it is very effective if you install  it for a side mount radiator

 

https://issuu.com/contact.magazine/docs/contact_magazine_issue_87_rotary_is/41

 

Le Roux

 

 

Le Roux, I have talked with Alex a bunch over exit louvers on the side. We are hoping to tune the exhaust dumping better to help pull air out of the bottom of the cowl. I don't see too many exit louvers though on planes. Any reason for it?

 

 

--

Homepage:  http://www.flyrotary.com/

Archive and UnSub:   http://mail.lancaironline.net:81/lists/flyrotary/List.html

Disclaimer

The information contained in this communication from the sender is confidential. It is intended solely for use by the recipient and others authorized to receive it. If you are not the recipient, you are hereby notified that any disclosure, copying, distribution or taking action in relation of the contents of this information is strictly prohibited and may be unlawful.

This email has been scanned for viruses and malware, and may have been automatically archived by Mimecast Ltd, an innovator in Software as a Service (SaaS) for business. Providing a safer and more useful place for your human generated data. Specializing in; Security, archiving and compliance. To find out more Click Here.

Virus-free. www.avast.com