2x45 vs 90 degree elbow air resistance

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Comparing air flow resistance of two 45 degree elbows vs. one 90 degree elbow on my dust collector, using the motor's power consumption to gauge airflow. Surprisingly, the two 45 degree elbows together only have 2/3 the air resistance. • More about dust collection at: • http://woodgears.ca/dust_collector

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