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jerryrosie Certificates/Ratings/Crew Stations: 1. "RE: Carb Ice" 05-24-02, 13:37z  . If I am in a long descent > at 2000 I will use it, and on down wind I pull it on before I get abeam > the numbers and the power reduction. Though I practice power off I > generally carry 1500 rpm on approach as I feel the extra heat is good > (I've heard the 200A Cont doesn't make enough heat at idle to prevent > ice). You are probably right about this issue generating a lot of comment and here is the first of the untutored and unknowledgeable comments that will be posted here But - here it is anyway.... Formation of carb ice is the result of the normal cooling that occurs as a gas(or a gas and atomized liquid mixture in this case) is speeded up and compressed as it is when passing through the throat of a carburetor. Whether or not this ice causes problems is determined by whether of not the formation of the ice restricts the flow of fuel through the . It is more likely to restrict the flow if the valve is closed, partially closed as in idling. So, keeping the RPMs up, ie. the valve more open, will help defeat the bad stuff from carb ice. One caution, I have heard, with excessive use of carb heat is that it introduces unfiltered air into the fuel intake system and the more pollutants you ingest into your engine the greater the chance of engine problems. Awaiting comments from others more knowledgeable...... ***Reality - The refuge of those who can't handle simulation*** Cheers, Jerry (N94) **** VPC OffLine Reader Version 1.0.0.0 **** ++++ Registered to: Gerald J. Rosie ++++ **** OLR.PL Build 1.73 **** Remove | Alert Edit | Reply | Reply With Quote | Top

Table of Contents

Subject      Author      Message Date     ID      Carb Ice    DHamblin       05-23-02              RE: Carb Ice    jerryrosie       05-24-02       1            RE: Carb Ice    DHamblin       05-24-02       2         RE: Carb Ice    Ben Chiu       05-24-02       3         RE: Carb Ice    avbug       05-26-02       4            RE: Carb Ice    DHamblin       05-27-02       5

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