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Greg and All thanks for the info. its carb heat in advance of power reduction from now on. I'm relieved that the carb ice was not a malfunction. Larry ----- Original Message ----- From: "Greg Bullough" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, December 03, 2001 9:24 PM Subject: Re: [COUPERS] carb ice > ----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- > > At 06:43 PM 12/1/01 -0600, L Friedman wrote: > >Thanks for the info. with 1200 hours behind Lycomings I never had any > >problem with carb ice. > > That is common experience. Lycomings have a different geometry for their > intake system that tends to discourage carb ice. For example, you'll note > that Piper POHs don't tell you to put carb heat on at reduced power settings > unless ice is suspected. > > Cessna manuals tell you to put it on automatically at low settings. I suspect > that this is really a carry-over from the times when the 150 and 172 were > both powered by 0-200s and O-300s respectively. I also suspect that > O-320 powered 172s really don't need the carb heat as a routine matter. > > If you look at the accident reports for Cessna 150s, you'll see TONS of > reports of them crapping out on poor students who forget the carb heat. > You'll not see this on the 152. > > On the baby Continentals, power reduction and carb heat application must > become coupled in the habit of the pilot. A65 through O-300, same story. > You must also be vigilant in ALL phases of flight. If the RPM falls off without > a change in pitch or throttle setting, you MUST believe it is carb ice and > you MUST respond with full carb heat without hesitation. You don't have > time to screw around wondering. > > I would estimate that I encounter ice carb ice in cruise on 20% of my > cross-countries here in the Northeast during the warmer months. This > is in a C85 (Stromberg) coupe and an O-200 (Marvel) coupe. > > I, too, had never encountered carb ice UNTIL I started flying behind little > Continentals. I thought it was a myth. No more. It's real. > > Greg > > ==^================================================================ This email was sent to: [EMAIL PROTECTED] EASY UNSUBSCRIBE click here: http://topica.com/u/?aVxiLm.aVzvvT Or send an email to: [EMAIL PROTECTED] T O P I C A -- Register now to manage your mail! http://www.topica.com/partner/tag02/register ==^================================================================
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