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| On the left, Patrick's piston design. On the right, my piston with modifications. It is my hope that these changes will make this piston perform better. |
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| There's a steel disk under the diaphragm. Side view |
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| On the left, Patrick's piston design. On the right, my piston with modifications. It is my hope that these changes will make this piston perform better. |
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| There's a steel disk under the diaphragm. Side view |
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