Mark: What kind of set up are you using to measure the mixture? The reason I ask is that if the engine misfires, it will actually produce a rich condition in the exhaust pipes due to unburned fuel entering them.
As I read your description, I get an image of a mixture meter reading backwards. If you richen it until in stumbles, it then reads lean....this is backward of what I understand. Is this mixture meter an exhaust temp gauge, or an O2 gauge? Why did you choose one over the other? Just curious. Thanks Scott --- Mark Langford <[email protected]> wrote: > NetHeads, > > I flew for 1.5 hours today, and figured out what my > "miss" was. It was > simply running too rich! Recall that I spent > several hours over the weekend > draining and flushing the fuel system, but didn't > find a single drop of > water. Today I watched the mixture meter carefully > and discovered that the > stumble is at full rich. The misfire then makes the > meter drop into the > lean zone, which is when I'd glance at it during the > last flight, so that > was somewhat confusing. Now I know that I need to > adjust my mixture cable a > little so that I can't get it that far into the rich > range. I'll do that > and do another test flight tomorrow if the winds > aren't too high. The thing > I've learned about winter flying is that the > acceptable mixture range is > reduced considerably over summertime temps. Well, > at least I took the > opportunity to clean out the fuel and air filters, > which was overdue. > > I did 10 landings at three different airports today, > and I'd have to call > every one of them a greaser! Even the last two at > my home field (40' wide, > 2600' long) were excellent, and on the last one I > deliberately tried to stop > as quick as I could and still had half the runway > left! The weather is > supposed to stink from tomorrow night forward for > the next 7 days, so maybe > I'll do some work behind the panel until then. I > want to install a > different (rectangular) mixture meter into the hole > where my useless Tiny > Tach was, add a fuel transfer timer, and add a > starter relay that will allow > my backup battery to help out when starting. I may > also remove my VSI and > do some testing on it to see why it's so worthless. > > Life is good... > > Mark Langford, Harvest, AL > see homebuilt airplane at http://www.N56ML.com > email to N56ML "at" hiwaay.net > > > > > _______________________________________ > Search the KRnet Archives at > http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to > [email protected] > please see other KRnet info at > http://www.krnet.org/info.html > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
