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Multiple contacts between the conrod and cam profile
Less contact stress & greater cam longevity
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Convex-concave contact b/w the conrod and cam profile
Further contact stress reductions & additional cam life
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Out-cylinder guidance of the pistons
Generous tolerances between piston & cylinder
Low sensitivity toward ambient temperatures
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Synchronously moving opposite pistons attached to different conrods
Vibration free operation
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Adjustable frame closure mechanism
Permanent contact between the conrod and cam profile
