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From: "Jeffrey Liegner, MD" <liegner@embarqmail.com>
Subject: Re: IVP De-ice (W&B Question)
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Dan...what is the revised Weight and Balance (W&B) for the plane with 
A/C, Hot Wings with BBQ Sauce (glycol) now installed?

Jeff L
LIVP in New Jersey


>I estimate I lost around 8 knots air speed with the ThermX and prop 
>heat.  This is with a 4 blade prop. I figure the de-ice lets me fly 
>3 months of the year that I would not normally fly, so 8 knots is 
>not a big penalty for me to pay.  I always try to leave myself an 
>out so if the de-ice fails.
>
>Yesterday while descending through a layer from 5500 ft down to 3000 
>ft, ATC had me stay in this layer for about 10 minutes.  Ice would 
>build  and the heaters would cycle and the ice would shed in about 2 
>seconds.  Before the deice install I would have never made this trip.
>
>Having watched the de-ice installation, I believe the install would 
>be a challenge for someone who did not build the plane.
>
>To make room for the dedicated alternator, my batteries were moved 
>to behind the spar.  This did not take up any useable space.
>
>With the engine driven air conditioner, the compressor had to be 
>moved about an inch to make room for the prop heat slip ring.  This 
>meant a new compressor bracket and baffling mod.
>
>My wind screen glycol spray bar is about 10" long and 1/8 in 
>diameter and barely sticks up above the cowling.  I had no room on 
>the firewall (FADEC) for the glycol reservoir so the 48 oz. 
>container and pump went in the baggage compartment.  (not where I 
>wanted it but I had no choice.)  This gives about 60, three second 
>bursts of fluid.  If I need more than that, seeing out the front 
>probably won't be my greatest concern.
>
>Since the last part of December I have had occasion to use the 
>system about 4 times.  One time was for about an hour. (I had an out)
>
>So far I am pleased with the performance of the system and the 
>quality of RDD's work.
>
>Dan Reagan
>IVP 500+ hours