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Windscreen Demister

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ghiggins(at)cirruscomms.c
Guest

Posted: Sat Feb 14, 2009 3:05 pm Post subject: Windscreen Demister

Hi Europaphiles,

 Has anyone felt the need for a demisting system in their Europa? If so, 

under what conditions?

Has anyone who has devised a cabin heating system included demisting as part 

of this?

Have you ever used it in anger?

I am considering my cabin heating system from the hot air at the back of the 

radiator, and wondering if I should include any demisting while on the job - 

don't want to have to come back later to do it.

             Regards   Graham Higgins,  #261 in Oz

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ghiggins(at)cirruscomms.c
Guest

Posted: Sat Feb 14, 2009 3:48 pm Post subject: Windscreen Demister

---

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paul.the.aviator(at)gmail
Guest

Posted: Sat Feb 14, 2009 3:53 pm Post subject: Windscreen Demister

Hi Graham,



I blow cold air onto my windscreen and it does a nice job of

defrosting.  If you take a took at

http://www.europa.net.nz/363/index.html under June 2002 you can see

the vents I made.



December 2003 shows the manifold for the ducts on the instrument panel.



You can see the SS heat box on the fire wall under January 2004.



The hose lay out can be seen under Friday 20th on February 2004.



If you click on the sidebar under flying experiences you will find a

link on how I did my cockpit heat.



Cheers,  Paul

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ptag.dev(at)tiscali.co.uk
Guest

Posted: Sat Feb 14, 2009 3:54 pm Post subject: Windscreen Demister

Hi! Graham,

Very occasionally on start up without the knee vents open and "TWO UP" I

have had misting up and once at 10,000ft without my hot air pick up

switched on when I had the screen begin to freeze over also "two up".

However my being in the UK and perhaps you being in OZ you my have

different considerations.

Regards

Bob Harrison. G-PTAG 



--

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budyerly(at)msn.com
Guest

Posted: Sat Feb 14, 2009 6:53 pm Post subject: Windscreen Demister

<?xml:namespace prefix="v" /><?xml:namespace prefix="o" /><![endif]-->  Graham,

 My website has a view of the method I use for my customers heaters.   Like most systems off the coolers, it varies the temp with the engine, outside  air and velocity.  Normally very good at 120 kias at 30 degrees F or  above.  

  

 As for demisting, most avionics put off enough heat that a small fan  blowing air from the passenger well and exiting through a hole above the  instruments (on top of the panel, in front of the pilot) works well for our  modest temps here in the SE US.  Jerry Hope said it best, "might as well  cool the instruments and keep the windscreen clear!"  He used a small  computer cooling fan of 12 volts sucking air from the curved portion on the  passenger side behind his radios and it blows across his stack, and it exits out  the top quite well.

  

 Bud Yerly

 Custom Flight Creations 

 Website:  customflightcreations.com

 [quote]   ---

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g-iani(at)ntlworld.com
Guest

Posted: Sun Feb 15, 2009 3:05 am Post subject: Windscreen Demister

A small computer fan  works well.  See attached,  The recessed aerial is for my Skymap   IIIc and mount is for my PCAS unit.

  

  

  

Ian Rickard G-IANI XS Trigear, 200 hours

Europa Club Mods Rep  (Trigear)

e-mail mods(at)europaclub.org.uk  

   or direct  g-iani(at)ntlworld.com

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air.guerner(at)orange.fr
Guest

Posted: Sun Feb 15, 2009 3:49 am Post subject: Windscreen Demister

Graham,

 I have installed a demisting system using a  glassfiber plenum under the top of panel module (see attached picture). Hot air  comes from the heating system  which takes air behind the radiator and  exits through 6 holes (7 millimeters diameter) at the bottom of the  windscreen. It works well in flight but is not very effective on the  ground were it is the most needed. A fan would certainly help for ground  use.  

 Hope that helps.

 Regards

 Remi Guerner

 F-PGKL

  

  

  

  

 >>>>>> Has anyone felt the need for a demisting  system in their Europa? If so, 

under what conditions?

Has anyone who has  devised a cabin heating system included demisting as part 

of this?

Have  you ever used it in anger?

I am considering my cabin heating system from the  hot air at the back of the 

radiator, and wondering if I should include any  demisting while on the job - 

don't want to have to come back later to do  it.

              Regards   Graham Higgins,  #261 in Oz  <<<<<<<<

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Trevpond(at)aol.com
Guest

Posted: Sun Feb 15, 2009 4:54 am Post subject: Windscreen Demister

Hi Graham,

  

 I put a large fan to the rear of my instrument panel so that air will be  drawn into the bottom and cool the avionics and Efis.  I cut 2 slots into  the instrument nacelle and the air exhausts nicely to the screen and keeps it  fog free.  Two for one!

  

 kind regards

  

  

  

  

 Trev Pond

 G-LINN

  

  

  [quote][b]

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loboloda(at)execulink.com
Guest

Posted: Sun Feb 15, 2009 6:41 am Post subject: Windscreen Demister

Graham,

I've used a small computer fan, cost about $4 as a surplus item. I fitted an on/off switch, but to date it has always been on.

I've had no misting problems with this in use, and it does get cold up here.



Dave C-FBZI



Do not archive 

On 14-Feb-09, at 9:46 PM, ALAN YERLY wrote:

[quote]   Graham,

 My website has a view of the method I use for my customers heaters.  Like most systems off the coolers, it varies the temp with the engine, outside air and velocity.  Normally very good at 120 kias at 30 degrees F or above.  

  

 As for demisting, most avionics put off enough heat that a small fan blowing air from the passenger well and exiting through a hole above the instruments (on top of the panel, in front of the pilot) works well for our modest temps here in the SE US.  Jerry Hope said it best, "might as well cool the instruments and keep the windscreen clear!"  He used a small computer cooling fan of 12 volts sucking air from the curved portion on the passenger side behind his radios and it blows across his stack, and it exits out the top quite well.

  

 Bud Yerly

 Custom Flight Creations 

 Website:  customflightcreations.com

 [quote]  ---

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