I have been working on fairings for upright bikes for several years. It is worth the effort as I get a 4 mph improvement at 10 mph. The method is to get fitted on the bike for your comfortable position. Have someone take a side view picture to get a profile. The idea is to get a 3D body that goes from your shoulders to just below your knees. You will need to measure the width of your hips and shoulders.
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