REFLECTOR: Repairs

[Ron N VelocityXLFG]

Got pictures??
How far inside the cowling ?

Ron

Does sound scary  thou

Ron

On 9/21/2012 9:07 AM, Dave T Nelson wrote:
>
>
> Many EZ types have the exhaust end inside the cowl.  I've been doing 
> that for many years now on my Velocity.  It actually works quite well 
> and can increase overall cooling.  The exhaust gas is at such a 
> greater velocity than the air around it that  it actually acts as an 
> augmentation and "pulls" air out of the cowling.
>
> Because your exhaust exits through the bottom of the cowl directly 
> down tangentially into the slipstream instead of exiting aft in 
> parallel with  the slipstream, you probably are getting some of that 
> hot exhaust gas back into the cowl.
>
> One other factor to consider is the large drag you are creating 
> exiting your exhaust down instead of aft.  It's a very "draggy" 
> setup... I probably gained close to ten knots when I got rid of it.
>
> Dave
>
>
> ----- Message from Scott Derrick <scott at tnstaafl.net> on Fri, 21 Sep 
> 2012 07:18:20 -0600 -----
> *To:*
> 	
> Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
> *Subject:*
> 	
> Re: REFLECTOR: Repairs
>
> Wow, I've never heard of ending he exhaust "inside" the cowl! That 
> sounds bad,  I definitely want my exhaust outside my engine 
> compartment and away form the plane!
>
> here's a picture of my left stack.
>
> Scott
>
>
> I've linked 1 file to this email:
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> -------- Original Message --------
> Subject: REFLECTOR: Repairs
> From: Lou Stedman _<stedmanlou at roadrunner.com>_ 
> <mailto:stedmanlou at roadrunner.com>
> To: Velocity Reflector _<reflector at tvbf.org>_ <mailto:reflector at tvbf.org>
> Date: 09/20/2012 11:08 PM
>
>     I have two repairs to do to my bird.
>
>     First, while I was on a trip this week, I was forced to tie my
>     plane outside. There was a large storm with high winds that came
>     through and blew my right rudder so that the bell crank  is now
>     loose. What is the best way to repair this?
>
>     Second, I am getting severe bubbling on my lower cowl, around the
>     exhaust tube. I am running a straight pipe out both right and left
>     side. The end of my pipe is about 1" inside the cowl. There is a
>     metal heat shield applied to the cowl with high temp silicone. Do
>     your pipes extend out of the cowl and how much clearance around
>     the pipes do you have? If you have any pictures I would love to
>     see them.
>
>     Thanks for any advice you may have.
>
>     Lou Stedman
>     Velocity SEFG
>     N7044Q
>     Olean, NY
>
>
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> -- 
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