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Date: Mon, 29 Jul 2013 12:24:23 -0400
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From: "pete@leapfrogventures.com" <pete@leapfrogventures.com>
Subject: RE: IVP Pressurized Door Seal and A/C Fans
Thread-Topic: IVP Pressurized Door Seal and A/C Fans
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My door seal cycles every 3-5 minutes.  I had a pinhole leak at the seam wh=
ere the seal is glued together.  You could also have a leak at the switch o=
n the door sill.

Pete

-----Original Message-----
From: Denis Conkey [mailto:dconkey@roadrunner.com]=20
Sent: Sunday, July 28, 2013 7:57 PM
To: lml@lancaironline.net
Subject: IVP Pressurized Door Seal and A/C Fans

I know many of you have experience flying with the pressurized IV.  How oft=
en should the door seal pump engage after the pressure is up on the Seal?
Ours seems to have a very short cycle "on" about every 5-8 second.  The pum=
p runs a second or less when it cycles on.  Not having experience with the =
pump, seems like the cycle time should be a bit more than that which might =
be indicative of a slow leak.  We have checked for leaks in all our tube co=
nnections using soap bubbles and could not identify any leaks.  What is a g=
ood way to check for leaks?  Is it possible for the pump to be leaking inte=
rnally?  Any advice on this topic would be much appreciated. =20

We have an air conditioner unit and the fans in the cabin that draw in the =
air are very noisy.  They are 4 inch Attwood Turbo 4000 fans.  These fans a=
re estimated to be more than 5-6 years old but used very little.  I noticed=
 that Attwood has a Series II fan that might be quieter.  Are there other o=
ptions for fans that are not quite so noisy.  These will drive any backseat=
 passenger crazy and I fear will be quite noisy in the front as well.  If y=
ou know of any other 4 inch fans that would be well suited for this purpose=
 or if the Series II fans are better, please let us know.

Thanks,

Denis Conkey/Jim Thompson
Lancair IVPT - N750PJ
805-402-6197