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Dirt Bike Brands - Other
help, stripped threads on oil drain plug
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[QUOTE="Jaybird, post: 1250544, member: 22283"] If there were no other hole in the case when you added air, the case would become pressurized. If a hole suddenly appeared in the pressurized case, the pressurized air inside would immediately seek the exit at that hole, and the exit speed of the air would be determined by the pressure that existed. If that pressure on the entrance side was maintained, then after the initial loss of pressure, the air flow would remain constant out of the orifice. And that flow would be determined by the incoming pressurized air and the size of the exit orifice itself. No air would be able to enter into the vessel, from the exit orifice, if the pressure from the air chuck is maintained, as the atmospheric pressure is lower than the inside of the case that is being pressurized on a continuous basis. And when you add the tap to the hole, you have effectively lessened the orifice area, which would cause the exiting air to escape at an even greater velocity than it was before, with even less chance of anything, including air and tapped metal chips, from entering into the pressurized vessel. This is a novice issue. And sometimes we need to humble ourselves, especially when we are just commenting on what we think, instead of what we know. Sometimes longtime mechanics, with decades of experience, are involved in these threads. That can be a humbling experience on occasion. I don't think you know nothing, but I do think you made a logical assumption by simply visualizing the concept. Trouble is your visualization forgot to include true physics, and replaced it with a "seems to me". [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
help, stripped threads on oil drain plug
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