Quote:
Originally Posted by alex.s
wouldn't they both be stamped the same way? just with a different die shape?
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I don't think so, I'm pretty sure they are spring steel and are formed in one continuous circle and then cut into a single ring. Heat treated, tempered and hardened... I've put new ones in, never seen them made. But that's how I'd make them a lot less waste that way.
but the rings are supposed to press out against the cylinder wall. I have a ring compressor that squeezes them into the piston groves so the piston can be fit into the cylinder. I'm just one guy with no degree in mech e... but it would seem to be insanely difficult to make a ring that presses out against the oval cylinder wall equally or efficiently. The circle works, that flat spot in the oval, seems to me to be the place that the ring would be pressed against the cylinder the softest/least
I've read some stuff by Motoman... and it seem from his stand point, rings sealing is #1, #3, and #4 on the important things an engine must do. HIs break in on a rebuild engine flies in the face of everyone else, but it is designed to seat the rings, max seal, max compression, max horse power for the fuel burned.
his ideas make sense, maybe i'm being taken for a ride. Interesting concept, dual rods looks robust...
if it was a major advancement... It would be in the bikes today.