---------------------------------------------------------- JabiruEngine-List Digest Archive --- Total Messages Posted Thu 05/10/07: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:00 AM - Re: cam shaft bearings (Lynn Matteson) ________________________________ Message 1 _____________________________________ Time: 04:00:09 AM PST US From: Lynn Matteson Subject: Re: JabiruEngine-List: cam shaft bearings I've just downloaded the 55 pages of the Designer's Handbook from Glacier Garlock Bearings, here in the USA. Even though the publication is written in my native English, it all looks like Greek to me. : ) But I'll study it and see if I can determine why my bushings might have failed so early. It seems to me on first look that there needs to be better lube, less mechanical pressure for the size of the bushing area, or different bushing material. I have already dreamed up a method for pressure-lubing the area, but so far that is just dreaming. It seems to me that an oscillating bushing of this size, under the load that a rocker arm endures, begs for the best possible lubrication versus materials compatibility. Lynn Matteson Grass Lake, Michigan Kitfox IV Speedster w/Jabiru 2200 flying w/275+ hrs On May 9, 2007, at 11:12 PM, JohnDRead@aol.com wrote: > Hello Listers: > The Glacier DU online catalog has all of the application and > spec info. In a past life I used a lot of these bearings with out > any problems. They are similar to an Oilite sintered bronze bearing > except the "spaces" on the DU are infiltrated with teflon which > should provide good boundary layer lubrication if there is brief > oil starvation. One problem with oscillating bearings is to get > adequate lubrication into the bearing, direct pressure feed is to > be preferred over splash lubrication. The latest Jabiru engines > have hydraulic lifters so I suppose there is a real need to examine > the engine oil for particles as there theoretically there will be > zero tappet clearance. > > Regards, John Read > > > See what's free at AOL.com. > http://www.matronics.com/Navigator?JabiruEngine-List _- > =========================================================== ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message jabiruengine-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/JabiruEngine-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/jabiruengine-list Browse Digests http://www.matronics.com/digest/jabiruengine-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.