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Ringed
Engines
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There
are two basic ring types, DYKE'S and CONVENTIONAL
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A
DYKE'S type ring is a "L" shaped ring that fits
at the very top edge of the piston. Many people can not even
see it as there is no piston material above it. Dyke's rings
do not feel like they are working (no compression) when the
engine is turned over by hand. A dyke's type ring is pressure
activated, (it is like a dyke) when pressure pushes against
the inner side of the ring it is pushed out tightly to the
cylinder wall. When it is running past the ports no pressure
is pushing it so there is less friction. This is why dyke's
rings produce more power than conventional type rings.
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A
conventional ring is just that. It has a rectangular profile
and fits into a groove usually about a 1/16" down from
the top of the piston. Conventional rings, when broken in
properly, provide a good seal at any speed. Conventional rings
have constant tension that force them against the cylinder.
When you flip a good conventional ringed engine over it feels
great with snappy compression.
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The
above information is provided as a guide. Since MECOA/K&B has
no way of determining the ability of the individual using and understanding
this information, we assume absolutely NO RESPONSIBILITY for any
damage to person or property from the use of this information.
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©
Model Engine Corporation of America, All rights reserved.
MECOA
and K&B are Registered Trademarks of Model Engine Corp. of
America
Registered U.S. Patent Office
Linking
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without written permission from
MECOA -- P.O. Box 5 -- Sierra Madre, CA 91025 U.S.A.
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