Received-SPF: none
 receiver=logan.com; client-ip=68.230.240.35; envelope-from=candtmallory@cox.net
Message-ID: <005e01c646b2$5e5af4a0$335c0144@mallorydesktop>
From: "the mallorys" <candtmallory@cox.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-1031899@logan.com>
Subject: Re: [FlyRotary] Re: finding a radiator
Date: Mon, 13 Mar 2006 09:25:32 -0600
MIME-Version: 1.0
Content-Type: text/plain;
	format=flowed;
	charset="iso-8859-1";
	reply-type=response
Content-Transfer-Encoding: 7bit

Dennis,

You seem to be at the same point in installation as I.  I'm putting the 
Renesis in an RV-8 using the James cowl.  I'm trying to fit the radiator 
verticaly under the engine mount.  That gives me space of about 8 1/2 by 19 
1/2.  Make the radiator 3.75 to 4 inches thick, and I should have enough 
cooling.  Since I don't have about 50 inches in front of the radiator for 
the perfect streamlined diffuser, the question for me is which will be less 
drag, a shorter (about 20 inches) streamline, or tipping the radiator at an 
angle and using a wedge shape diffuser?  In any case, I plan on having an 
exit duct also with a controllable exit.

Does anyone know the answer?

Chris
----- Original Message ----- 
From: "Ernest Christley" <echristley@nc.rr.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Sunday, March 12, 2006 10:37 PM
Subject: [FlyRotary] Re: finding a radiator


> Dennis Haverlah wrote:
>
>> My question is - will the air make the 75 degree turn and flow through 
>> the fins?  If not - would turning vanes below the radiator make this 
>> configuration possible?
>
> Dennis, a section in K&W book discusses this very issue.  The short answer 
> is "Yes".  The long answer is that you have to be very careful how you 
> design the duct face in front of the radiator.  If you have their book, 
> it's figure 12-12 on page 277.
>
> -- 
> This is by far the hardest lesson about freedom. It goes against
> instinct, and morality, to just sit back and watch people make
> mistakes. We want to help them, which means control them and their
> decisions, but in doing so we actually hurt them (and ourselves)."
>
>
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:   http://mail.lancaironline.net/lists/flyrotary/