Yes, the air will come in from the nostril, make a 180 degree turn, go through the radiator, make a 180 = degree turn, and exit the cowl…after that I don’t know what it will = do….but I am sure it will be dizzy!!!

Bill B

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ed Anderson
Sent: Saturday, October = 06, 2007 7:30 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Duct?[FlyRotary] Re: Coolant Water Pressure

Bill, do I interpret your explanation of your duct = below correctly. You pull your air in from up front of the cowl and then = route it via the duct to the firewall side of the radiator (the side not shown = in the photo) and then have it flow through the core and exit up into the = cowl?

----- Original Message ----- =

From: Bill Bradburry

To: Rotary motors in aircraft

Sent: = Saturday, October 06, 2007 7:10 PM

Subject: = [FlyRotary] Re: Coolant Water Pressure

Yes, = Kelly.

There is a duct that brings air = from the left nostril back to the rear of the radiator. You can just see it = as it comes around the corner at the lower right side of the picture. = There is a plenum that diffuses this air to cover the radiator core and forces = all the air that comes into the nostril to go through the radiator. When I = did a tuft test on the face of the radiator, I got a pretty good flow over the = entire face of the radiator. However, I had a stronger flow at the = bottom. That is part of what caused me to try the fan. That and I felt = that I would need more air flow than was provided through the nostril by prop = blast when ground running. I do not think the fan will be needed at = speed in flight and in fact, may be an impediment at that = time.

Bill B

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Kelly Troyer
Sent: Saturday, October = 06, 2007 1:01 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = Coolant Water Pressure

Bill,

I do not see any sign of ducting to force air through the radiator instead of around

it........Do you have ducting that is not in the photo = ??

--
Kelly Troyer
"Dyke Delta"_13B ROTARY Engine
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold

-------------- = Original message from "Bill Bradburry" = <bbradburry@bellsouth.net>: --------------

Ok, I recently upgraded my computer = to Vista and had to download some = software to get my camera to talk to it…So here are some pictures of my cooling = install

Notice the bypass hole that you = guys are talking about needing to plug. This hole is in the housing which = has been removed, so it is not a player.

The little rag you see on the oil = line is a high tech way of checking for a leak. (I have = one!)

The red wire is the air temp sensor = for the air after the radiator. It is on top of the = fan.

Hoses are 1 =BC” The = temperature sensor was moved from the left side of the inlet to the = top

But is reading temperature as it = enters the engine after the radiator. (coolest = place)

My overflow catch can. I will = be replacing this with a pressurized on as per Lynn’s suggestions in a previous post in order to introduce =

An air cushion above the liquid = under pressure so it will not be = “locked”.

I am planning to try and put = suction on the cowling at the exit with a leaf blower in addition to the prop blast = and the small fan to see if an increase in

Air flowing will help. I haven’t checked the sides of the radiator yet as I have been alone = when running the engine….

All inputs appreciated. I = already know some things should be changed, so don’t hold back with the suggestions.

Thanks,
=
Bill B