No one's given a real-world example of what .25mm is. It's less than .010" or ten one-thousandths of an inch. That's equivelent to the thickness of about 3 sheets of nice copy paper and smaller than the ball in a ball-point pen. That's thinner than the reported boundary layer of combustion gasses in a typical engine and therefore the lip could be considered virtually insignificant.
Just another perspective on your .25mm lip:
1% more pressure pushing down on sleeve for a split second's pretty insignificant in my book. I'm about done here since I'm not really trying to change opinions and it seems most people are reluctant to experiment and formulate their own opinions. Afterall, the definition of insanity's repeating the same behaviour over and over and expecting a different result and I've got other things I should do with my time.
It's been fun, my 2¢ are spent.
-P
Just another perspective on your .25mm lip:
1% more pressure pushing down on sleeve for a split second's pretty insignificant in my book. I'm about done here since I'm not really trying to change opinions and it seems most people are reluctant to experiment and formulate their own opinions. Afterall, the definition of insanity's repeating the same behaviour over and over and expecting a different result and I've got other things I should do with my time.
It's been fun, my 2¢ are spent.
-P
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