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I will look for the dates for you.
I do not recall the words "cylinder failure" anywhere, just that there was major engine work, top overhauls, and fears of needing rebuilds in the near future. I see someone "Mike Murdock" wrote in message ... Dude, I am a COPA member, and I read the members forum regularly, and I don't remember seeing anything about premature cylinder failure. However, since there are over 50,000 posts there, I'm willing to admit that I might have missed one or two ![]() Do you still have the COPA posts you were forwarded? If you can give me the date they were posted, or the name of the person who posted them, or any unique keywords from the post, I'd be happy to look them up and post a synopsis here. I've already searched for "shock cooling" without finding the posts you mentioned. I'm sincerely interested since I own an SR22, and if the engine is going to go Tango Uniform at 700 hours, I'd like to know. I do know that several have flown past that mark with no problem, although the sample size is still small since the fleet is still young. Thanks, -Mike "Dude" wrote in message ... Are you a COPA member Peter? I was forwarded some rather ugly COPA posts (I think its funny that all the bad news is in the "members only" section as if it won't get out, and then you let anyone buy a membership). The root of the problem is suspected to be that pilots are killing the throttle to descend. They give the reason for having to kill the throttle as not having the option to reduce power sufficiently because of the limited settings available to them. I am not trying to claim that anyone has been advertising the Cirrus prop controls as FADEC or even FADEC like. However, they have commented on how "simple" the operation of this system is for the pilot. The unintended consequence of this system is that the pilots are not able to let the engine and prop combo run in its sweet spot, and vertical planning becomes more problematic. Of course, no one forwards me notes from happy Cirrus customers. If your level of positive thinking and optimism is bothered by the subject, you should not log on. Even I quit watching the local news, and I suggest you do the same. "Peter Duniho" wrote in message ... "Dude" wrote in message ... I reduce throttle in my plane, and I can increase rpm. The combination will slow my plane Reducing throttle in a Cirrus slows the plane down too. without over cooling the engine. I DO NOT want to get into an argument about shock cooling. Then stop making statements that rely on the assumption that shock cooling exists. Whether shock cooling occurs or not does not change the fact that many pilots fly in ways to avoid it. So what? First of all, your assumption that high RPM, low throttle power settings avoid shock cooling is simply wrong. If there is such a thing as shock cooling, then reducing power will cause shock cooling, regardless of what mix of RPM and MP you use. Additionally, at low throttle, high RPM settings, the engine is windmilling, being driven by the airflow through the prop, and is considered by many to be at least as damaging to an engine as shock cooling, if not more so. Secondly, the fact that "many pilots" fly in a way to try to avoid something that does not happen isn't relevant to any rational discussion. Why would an aircraft designer install speed brakes just to address some psychological need for a pilot to use them, even if there is no practical advantage to doing so? In other words, if you want to play the "avoid shock cooling card", you'd better darn well be prepared to argue that "shock cooling" is real. The Cirrus does not allow full control over prop and throttle (aka phony fadec) It's not a FADEC. It's not advertised as a FADEC. It cannot possibly be a "phony fadec [sic]", since no one's called it a FADEC in the first place. Well, the ones that have engines dying at 700 hours are a lot frigging louder than the ones that think it works just fine. I haven't seen any evidence to even buttress that statement. But even if it's true, how's that anything other than basic human nature? Why would someone for whom everything's going fine invest a huge effort complaining about that? Who do you expect to hear from, if not from the few folks who have had engine problems? Pete |
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