On 8/11/2020 3:12 PM, Chris Kinnaman via KRnet wrote:
Kawasaki went to plain bearings on their 4 strokes after that due to
the greatly reduced internal friction and reduced rotating mass, which
would seem to be the advantage exploited by (most of?) the airplane
engine folks so many years before.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
I'm not an engine guru but I was wondering why you would want roller
bearings, which I assume would be much more expensive and, as you
stated, less adventurous. then plain bearings. The "plain" bearings in
my 0-200 went 2400 hours and 40 years and would have gone another 500
hours easy if I had left them alone. They left not a single mark on my
crank anywhere and my crank measured very usable by two different shops,
better than minimum service limits and nothing out of round. I let no
one touch it to screw it up and reassembled using new bearings. I'm
guessing it will perform longer than I will.
Larry Flesner
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