All About Not So Plain Bearings

Savvy maintenance expert Mike Busch talks all about plain bearings, also known as sleeve bearings or bushings, used in piston aircraft engines. Savvy Aviation offers Professional Maintenance Services to owners of General Aviation aircraft, such as: Savvy Mx (Professional Maintenance Management), Savvy QA (Expert Consulting), Savvy Prebuy, SavvyAnalysis (Engine Data Analysis) and Savvy Breakdown Assistance. For more info see savvyaviation.com and www.sportys.com.... This channel offers videos about those services, and webinars hosted by Mike Busch which were produced by the Experimental Aircraft Association (EAA) and sponsored by Aircraft Spruce and Specialty.

[@bryanaveri6816]

If I am replacing the pistons and cylinders at 1500 hours and oil analysis information tells me nothing is wrong with the Rod Bearing, shouldn't I just change the Rod bearing anyway because I have easy access to the bearings? ... I never hear of mechanics changing these bearings.

[@capagustinmex8872]

Podrías hablar más sobre el turbo y como funciona más explicado el wastegate, como se acciona y los tipos que hay por favor

[@firstielasty1162]

If you look closely at that "lycoming crankcase", you can see where, in the upper left corner, the distributor goes in.
The transaxle bolts to the other end.
Hey....what the...?

[@blairkrukowski3806]

The photos that are described as "Lycoming crankcase halves" are actually Volkswagen "air-cooled" Beetle crankcase halves. Just so ya know !!! But of course they are somewhat similar and all comments do apply.

[@chippyjohn1]

With regards to roller bearings, it is more a matter of cost and now oils are so good it is less beneficial. Historically engines such as the DB601 and HL230 were large V12's that used roller bearings on the crank and even on the conrods. Most motorcycles and small engines use roller bearings also. Some companies have wanted to reintroduce roller bearings as the fuel efficiency is beneficial, and it will probably happen soon enough but the need for a split case bearing, or multi piece crank make it much more complicated and expensive. Adding thousands of dollars to the manufacturing cost of a common engine today is a large expense for the end user.