---------------------------------------------------------- Kolb-List Digest Archive --- Total Messages Posted Tue 03/17/09: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:23 AM - Re: Re: How many gallons per hour with VW Redrive (Richard Girard) 2. 06:16 AM - Re: Repairmen Inspection (ropermike) 3. 06:29 AM - Re: Repairmen Inspection (cristalclear13) 4. 09:42 AM - Re: Re: How many gallons per hour with VW Redrive (Dana Hague) 5. 05:00 PM - Re: Repairmen Inspection (Beauford T) ________________________________ Message 1 _____________________________________ Time: 04:23:55 AM PST US Subject: Re: Kolb-List: Re: How many gallons per hour with VW Redrive From: Richard Girard The answer is weight. A built up crankshaft weighs less. It also allows the use of a "folded" (Eric Tucker's terminology) design of the crank throws, which makes the crank shorter, which makes a smaller, shorter crankcase which also reduces weight. Incidentally, the folded crank throw doesn't allow room for rod bolts, so no after market rods are likely.Okay, Dana, jump in and tell every one weight has absolutely nothing to do with it. :-} Rick On Mon, Mar 16, 2009 at 4:15 PM, John Hauck wrote: > > > > Interesting concept...not sure that I have seen that > >> before? Makes me think that at 4k or so for the assy the after market >> could make money rebuilding them with different rods with split big >> ends.. Herb >> > > > Does anyone know why Rotax when the same route with cranks for 4 strokes as > they did for 2 strokes? > > Not being an engineer, I have to rely on what little bit of good ole common > sense I inherited. A cursory glance at the crank tells me it may be lighter > and cleaner for turning higher speeds. Might reduce drag, increase > performance. > > Just guessing. I don't know. > > I do know that the only problem Rotax has experienced with a 912 crank was > oil starvation. A few seconds of oil starvation and the engine is toast. > What is the primary cause of oil starvation? Losing an oil line. Jim Lee, > Sharon, PA, lost his life near Lakeland, FL, when he was flying a Kolb MKIII > with floats. Lost an oil line on a 912, stalled and crashed. > > Losing an oil line on a 912 should not happen. The intake line is under > vacuum, pump is pulling oil. The outlet line is under 3 to 5 psi (crankcase > pressure) to push oil out of the crankcase, back to the oil tank. > > > john h > mkIII > > ________________________________ Message 2 _____________________________________ Time: 06:16:59 AM PST US Subject: Kolb-List: Re: Repairmen Inspection From: "ropermike" Thanks Cristal and Scott. My instructors will be Carol and Brian Carpenter. I am looking forward to the class. -------- The next best thing to playing and winning is playing and losing!...Mike Hillger Read this topic online here: http://forums.matronics.com/viewtopic.php?p=234961#234961 ________________________________ Message 3 _____________________________________ Time: 06:29:59 AM PST US Subject: Kolb-List: Re: Repairmen Inspection From: "cristalclear13" ropermike wrote: > Thanks Cristal and Scott. My instructors will be Carol and Brian Carpenter. I am looking forward to the class. Oops, sorry Mike. I was thinking Sport Aviation Specialties, not Rainbow Aviation. Hopefully it'll be as good. :) -------- Cristal Waters Kolb Mark II Twinstar Rotax 503 DCSI Read this topic online here: http://forums.matronics.com/viewtopic.php?p=234962#234962 ________________________________ Message 4 _____________________________________ Time: 09:42:31 AM PST US From: Dana Hague Subject: Re: Kolb-List: Re: How many gallons per hour with VW Redrive At 07:23 AM 3/17/2009, Richard Girard wrote: >Okay, Dana, jump in and tell every one weight has absolutely nothing to do >with it. :-} Are you kidding? Weight is EVERYTHING! :) -Dana -- The first rule of intelligent tinkering is to save all the parts. ________________________________ Message 5 _____________________________________ Time: 05:00:02 PM PST US From: "Beauford T" Subject: Kolb-List: Re: Repairmen Inspection I thought the Carpenters were very good indeed... I won't dare to speak for Mr. George T. Alexander, eminent member of this list, who sat next to me and managed to keep me conscious for most of the class, (and allowed me to copy from his final exam paper to prevent my total humiliation) but I thought they were competent and skilled presenters. Time well spent. beauford FF-076 Brandon, FL ----- Original Message ----- From: "cristalclear13" Sent: Tuesday, March 17, 2009 9:29 AM Subject: Kolb-List: Re: Repairmen Inspection ropermike wrote: > Thanks Cristal and Scott. My instructors will be Carol and Brian Carpenter. I am > looking forward to the class. Oops, sorry Mike. I was thinking Sport Aviation Specialties, not Rainbow Aviation. Hopefully it'll be as good. :) -------- Cristal Waters Kolb Mark II Twinstar Rotax 503 DCSI Read this topic online here: http://forums.matronics.com/viewtopic.php?p=234962#234962 ------------------------------------------------------------------------------------- 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.