X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 29 Jun 2007 23:13:03 -0400 Message-ID: X-Original-Return-Path: Received: from [70.62.14.124] (HELO server1.USTEK) by logan.com (CommuniGate Pro SMTP 5.1.10) with ESMTP id 2147588 for lml@lancaironline.net; Fri, 29 Jun 2007 08:40:03 -0400 Received-SPF: none receiver=logan.com; client-ip=70.62.14.124; envelope-from=r.simon@ustek.com Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C7BA4A.E65686C8" Subject: RE: To de-ice, or not to de-ice, and if so, how? X-MimeOLE: Produced By Microsoft Exchange V6.5 X-Original-Date: Fri, 29 Jun 2007 08:42:03 -0400 X-Original-Message-ID: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: To de-ice, or not to de-ice, and if so, how? Thread-Index: Ace6SuURgB3sqDeIQxaUbNq3ZP1KMg== From: "Lancair" X-Original-Sender: "Robert Simon" X-Original-To: "John Hafen" , This is a multi-part message in MIME format. ------_=_NextPart_001_01C7BA4A.E65686C8 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable John, =20 Virtually all these systems when applied to experimental aircraft are - well - experimental. I have opted for the RDD/Kelly Aerospace heated leading edge because 1.) it will not run out of electrons: the system is always primed and full, and 2.) I can use the power that runs it, a 100a 70vDC alternator, to run my A/C. The heated boots are now applied and the alternator is in place. During the next few months I hope to get the control installation de-bugged and operational. =20 =20 Robert M. Simon ES-P N301ES ________________________________ From: John Hafen [mailto:j.hafen@comcast.net]=20 Sent: Thursday, June 28, 2007 7:22 PM To: lml@lancaironline.net Subject: To de-ice, or not to de-ice, and if so, how? Gents: =20 This is a philosophical question as well as a technical recommendation question. =20 A) would you consider a de-ice system for the IV-P? =20 B) if so, which technology would you use? =20 In general, I don't believe in flying small planes anywhere near icing conditions (been there done that - sinking feeling when you are at full throttle and unable to maintain level flight - then your prop heat throws off a chunk of ice that hits the windshield like a brick.... Just to keep your heart rate and blood pressure way high off the chart.) =20 And, having said the above, after you have done everything possible to avoid icing conditions, and you still find yourself icing up, it would be nice to be able to do something about it other than pray, which I have done ("I promise to mend all my evil ways if you just help me out of this one..."). =20 So, philosophically, would you recommend a de-ice system? =20 If so, would you lean toward: =20 Heated Leading Edge Electro Expulsive Glycol Rubber Boot Other? =20 As always, your thoughts/recommendations are welcome. Thanks in advance. =20 John Hafen Lancair IV-P N413AJ=20 2/3rds done (I pray) =20 PS - I LIVE IN SEATTLE - THE WEATHER IS ALWAYS SH1TTY, HERE. =20 =20 ------_=_NextPart_001_01C7BA4A.E65686C8 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
John,
 
Virtually all these systems when applied to = experimental=20 aircraft are - well - experimental.  I have opted for the RDD/Kelly = Aerospace heated leading edge because 1.) it will not run out of = electrons: the=20 system is always primed and full, and 2.) I can use the power that runs = it, a=20 100a 70vDC alternator, to run my A/C.  The heated boots are now = applied and=20 the alternator is in place.  During the next few months I hope to = get the=20 control installation de-bugged and operational.  =
 
Robert M. Simon
ES-P N301ES

From: John Hafen = [mailto:j.hafen@comcast.net]=20
Sent: Thursday, June 28, 2007 7:22 PM
To:=20 lml@lancaironline.net
Subject: To de-ice, or not to de-ice, = and if so,=20 how?

Gents:

 

This is a philosophical = question as=20 well as a technical recommendation question.

 

A) would you consider a = de-ice=20 system for the IV-P?

 

B) if so, which technology = would you=20 use?

 

In general, I don’t = believe in=20 flying small planes anywhere near icing conditions (been there done that = –=20 sinking feeling when you are at full throttle and unable to maintain = level=20 flight – then your prop heat throws off a chunk of ice that hits = the windshield=20 like a brick…. Just to keep your heart rate and blood pressure way = high off the=20 chart.)

 

And, having said the = above, after=20 you have done everything possible to avoid icing conditions, and you = still find=20 yourself icing up, it would be nice to be able to do something about it = other=20 than pray, which I have done (“I promise to mend all my evil ways = if you just=20 help me out of this one…”).

 

So, philosophically, would = you=20 recommend a de-ice system?

 

If so, would you lean=20 toward:

 

           = =20 Heated Leading Edge

           = =20 Electro Expulsive

           = =20 Glycol

           = =20 Rubber Boot

           = =20 Other?

 

As always, your=20 thoughts/recommendations are welcome.  Thanks in = advance.

 

John = Hafen

Lancair IV-P N413AJ=20

2/3rds done (I=20 pray)

 

PS – I LIVE IN = SEATTLE – THE WEATHER=20 IS ALWAYS SH1TTY, HERE.

 

 

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