09-01-2010, 09:09 PM
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#38
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Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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Quote:
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Originally Posted by Reveeen
Usually you only see roller bearings in the bottom ends of 2 cycle engines, how else would the fuel-oil mix suspended in air lube the bearings? (*think* roller bearings, or ball bearings, will not hold oil under pressure worth crap, to lube the rest of the engine)
The "Usual" for 4 stroke engines is a a "plain" bearing, or a "babbitt" bearing:
http://en.wikipedia.org/wiki/Babbitt_%28metal%29
The main feature is this bearing will hold oil pressure and allows the entire engine to be lubricated with a single, simple, oil pump.
Some hybrids do exist, but they are few, and far between, and certainly not in most of our price range. |
It would seem that the engine I'm working on is unusual; check out item #5: http://www.cmsnl.com/suzuki-ts100-19...ist/85706.html
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Weldangrind
"I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
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