I have read several articles on the Gami and they are pretty insistant that you can do it with theirs. They even have a class on the proper way to lean them. There are very different opinions on this and I don't have an opinion other than passing on what they say. For 99% of us I definitely agree that rich of peak is much safer. Let the computer controlled engines with a bunch of sensor inputs manage the engines in the lean of peak netherworld.
Brian Kraut Engineering Alternatives, Inc. www.engalt.com -----Original Message----- From: krnet-bounces+brian.kraut=engalt....@mylist.net [mailto:krnet-bounces+brian.kraut=engalt....@mylist.net]On Behalf Of Jim Sent: Saturday, November 26, 2005 3:10 AM To: KRnet Subject: Re: KR> Engine heat No problem with most of what you said 'however if you run the engine lean of peak you will be replacing cylinders'no matter who,s injecters you have. ----- Original Message ----- From: "Brian Kraut" <brian.kr...@engalt.com> To: "KRnet" <kr...@mylist.net> Sent: Friday, November 25, 2005 6:10 PM Subject: RE: KR> Engine heat >I have seen published EGT never to exceed temps before, but only on factory > planes that have the probe in the same place. What your maximum is will > depend on where the probe is and a little bit on how the air flow is over > the exhaust. > > When you are leaning the engine you are looking for what the peak EGT is > as > you pull the mixture back. The actual number is not really that > important. > > When you are at your cruise power setting you want to slowly pull the > mixture back a little at a time. Let the EGT settle for 5 to 10 seconds > each time you pull back a little. You will eventually reach a point where > you get a peak temperature and pulling back the mixture any more will > cause > the temp to decrease. Once you have found the peak you want to push the > mixture in where it is 25 - 50 degrees rich of peak for a good economy > cruise. Your best power setting will be about 100 degrees rich of peak. > You will find that your peak temp wil vary some depending on your power > setting, altitude, and outside air temp, but you can still find the peak > at > any setting. > > I have found that with exhaust wrap that it is much easier to find the > peak > on my Midget Mustang than it was without it. > > You will get some differences of opinion on weather you should run rich of > peak, lean of peak, or at peak. If you have a good matched set of fuel > injectors like the Gami ones you can safely run best a little lean of > peak. > When you are using a carburated engine or regular injectors that are not > matched and you only have one EGT you need to err on the rich side because > you might have one or more other cylinders that are leaner than the one > you > have the EGT on and you can damage them. > > Brian Kraut > Engineering Alternatives, Inc. > www.engalt.com > > -----Original Message----- > From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net]On > Behalf Of Robert L. Stone > Sent: Friday, November 25, 2005 1:14 PM > To: KR Builders Pilots > Subject: KR> Engine heat > > > Netters, > I hope one of you is knowledgeable enough to provide me with > information I need to use my EGT gauge. I need facts rather than > opinions. > I am running a 110 horse Lycoming > engine and just had an EGT gauge installed. The gauge is set to alarm at > 1500 degrees and this seems high to me. Can anyone tell me when climing > to > altitude and thining the mixture what would be the best temperature for > maximum fuel economy and engine health. I would also like to know what > the > never exceed temperature would be. > > Bob Stone > > > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html > > > > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html > _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html
