---------------------------------------------------------- Kolb-List Digest Archive --- Total Messages Posted Sat 06/06/09: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:24 AM - Re: Rotax Operating Parameters (lucien) 2. 10:14 AM - Re: WEATHER REPORT AND MICHIGAN FLY IN SUNDAY (Arksey@aol.com) 3. 10:43 AM - Re: WEATHER REPORT AND MICHIGAN FLY IN SUNDAY (ces308) 4. 07:25 PM - Corrosion in 912 engines (jvanlaak@aol.com) ________________________________ Message 1 _____________________________________ Time: 07:24:28 AM PST US Subject: Kolb-List: Re: Rotax Operating Parameters From: "lucien" aoldman(at)xtra.co.nz wrote: > 350 hrs at 6100 to 6200 and engine still running well, good compresions > ,starts well and passes all tests . I did an overhaul on a 503 a number of > years ago that included breaking the crank replacing the main bearings with > proper rotax ones and re ringing the engine then flew about 200 hrs on it > before selling the Thruster Gemini{ Australian kit} Last time I spoke to the > new owner he had flown it past 800hrs and on sold the engine that was then > put on another project and still running fine. This engine was a single > points ignition T/C and always ran well, checked points and ring tensions > about every 100hrs, other than that carbs cleaned and checked at 50hrs. > Never found anything that would indicate that they needed looked at this > often. The only problem that I ever had was some times it would idale a bit > rough, every time this happened it was a bit of something{ fibreglass from > the fuel tank }cought up in the fuel air mixing part of the carb . Very fine > glass strands and hard to see for the first time > > Downunder > MK111c 503 > > --- As I said, when you run the engine continuously that hard, you're taking your chances. Those of us with years and many hours of experience with this engine know this. Advice on the operation of this engine (or any engine) from those who do _not_ have that experience should only be taken with a lot of cross-checking with experienced operators. Your plane and your motor is on the line - be careful... Make lots of phone calls and ask questions of experienced persons first before you commit to that advice. The 503 is probably the toughest 2-stroke available. Even at $4k it's probably still the best deal available in aviation for 50bhp. It gives long life and very reliable operation as long as it's run the way we know how to run it. The only problem I ever had with a 503 was taking off once with one of the chokes stuck partially open - stumbled pretty bad as I approached full throttle. Shut the choke and installed a primer system and that was cured.... LS -------- LS Titan II SS Read this topic online here: http://forums.matronics.com/viewtopic.php?p=247081#247081 ________________________________ Message 2 _____________________________________ Time: 10:14:18 AM PST US From: Arksey@aol.com Subject: Kolb-List: RE: WEATHER REPORT AND MICHIGAN FLY IN SUNDAY weather forecast for tomorrow, Sunday is for showers and thunderstorms here in southern michigan so I am not planning on going to Coldwater Mi fly in...darn it wanted to meet up with some of the Kolb guys there....we will plan another get together, so will be in contact...Jim Swan do not archive JIM SWAN firestar ll, 503, N663S Eaton Rapids, Mi. 48827 PH 517-663-8488 runway 2300' E & W (42-28.58N 084-44.69 W ) **************Stay connected and tighten your budget with a great mobile device for under $50. Take a Peek! ________________________________ Message 3 _____________________________________ Time: 10:43:26 AM PST US Subject: Kolb-List: Re: WEATHER REPORT AND MICHIGAN FLY IN SUNDAY From: "ces308" Hello Gang, Ditto for northern Mi too.... chris ambrose m3x/jab 20.7hrs N327CS Read this topic online here: http://forums.matronics.com/viewtopic.php?p=247100#247100 ________________________________ Message 4 _____________________________________ Time: 07:25:30 PM PST US Subject: Kolb-List: Corrosion in 912 engines From: jvanlaak@aol.com All, I have been considering buying a Mk III Extra that I like but which currently has a 582 on it and then converting it to a 912.? There are a number of mid time engines for sale but I wonder how long they can sit without starting to?corrode.? I have had to replace cams and lifters on Lycomings that sat too long and would like to avoid it. Does anyone on the list have experience with this?? Or with signs that corrosion might be starting before the engine gets to the stage of "making metal?"? What does a repair/overhaul for something like this run? Thanks for any insight you can offer. Jim Van Laak ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message kolb-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Kolb-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/kolb-list Browse Digests http://www.matronics.com/digest/kolb-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.