----- 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

 

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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 ¼”  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