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Off-Topic Discussion
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Mirrors removed and bar end mirrors installed
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<blockquote data-quote="RichDoyle" data-source="post: 1403593" data-attributes="member: 84694"><p>Actually there is an additional factor known as Density Altitude to pilots that's applicable to winter vs. summer mileage. At an altitude of 3000 ft MSL the "normal" temperature is 47 degrees. Here our average wintertime temperature is more like 40 degrees. In summer, 80 degrees is more typical, though we've seen lots of 90+ degree highs this summer. (FWIW, Density Altitude at my 3250 ft elevation home airport in the heat of day has surpassed 6000 ft. numerous times this summer.)</p><p></p><p>The difference in air density between 40 degrees and 80 degrees at 3000 ft. is about a 7 percent reduction. So air drag is lower by 7% at any given speed. The typical temperature variation I dealt with at sea level in years past had a similar seasonal differential.</p><p></p><p>The difference in air density between sea level at 40 deg and 3000 ft. at the same temperature is about 10%. That jives with the improvement I've seen in mileage for all three of my vehicles in similar temperatures since moving from Puget Sound 3 years ago.</p></blockquote><p></p>
[QUOTE="RichDoyle, post: 1403593, member: 84694"] Actually there is an additional factor known as Density Altitude to pilots that's applicable to winter vs. summer mileage. At an altitude of 3000 ft MSL the "normal" temperature is 47 degrees. Here our average wintertime temperature is more like 40 degrees. In summer, 80 degrees is more typical, though we've seen lots of 90+ degree highs this summer. (FWIW, Density Altitude at my 3250 ft elevation home airport in the heat of day has surpassed 6000 ft. numerous times this summer.) The difference in air density between 40 degrees and 80 degrees at 3000 ft. is about a 7 percent reduction. So air drag is lower by 7% at any given speed. The typical temperature variation I dealt with at sea level in years past had a similar seasonal differential. The difference in air density between sea level at 40 deg and 3000 ft. at the same temperature is about 10%. That jives with the improvement I've seen in mileage for all three of my vehicles in similar temperatures since moving from Puget Sound 3 years ago. [/QUOTE]
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Off-Topic Discussion
Off-Topic Discussion
Mirrors removed and bar end mirrors installed
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