Cycling Power and Speed Calculator: Difference between revisions
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=Notes= | =Notes= | ||
*Biggest gain is obtained from reducing coefficient of drag due to wind. Air foil (wing) has the lowest drag - less than 0.1 | *Biggest gain is obtained from reducing coefficient of drag due to wind. Air foil (wing) has the lowest drag - less than 0.1 | ||
*Best cars are at cd=0.22 - [https://www.motoringresearch.com/car-news-list/most-aerodynamic-new-cars-2018/] | *Best cars are at cd=0.22 - [https://www.motoringresearch.com/car-news-list/most-aerodynamic-new-cars-2018/], and VW XL1 cd=0.19 [http://motorburn.com/2014/01/12-of-the-most-aerodynamic-cars-in-production-right-now/]. Impractical cars can do better. | ||
*Aptera - lowest cd=0.15 in history for a production car[https://en.wikipedia.org/wiki/Aptera_2_Series], which is 850 mpg equivalent. | |||
*Stingray/Stealth bomber/airfoil mix type bodies can be around 0.1. | |||
Revision as of 17:41, 29 January 2019
Solar vehicle version, 8'x16' body - so 1000W of solar panels.
This would go at 25 mph with a 300 lb vehicle weight, 165 lb rider weight, with 5 square foot frontal area with 500W of power according to this calculator -
https://www.gribble.org/cycling/power_v_speed.html
Notes
- Biggest gain is obtained from reducing coefficient of drag due to wind. Air foil (wing) has the lowest drag - less than 0.1
- Best cars are at cd=0.22 - [1], and VW XL1 cd=0.19 [2]. Impractical cars can do better.
- Aptera - lowest cd=0.15 in history for a production car[3], which is 850 mpg equivalent.
- Stingray/Stealth bomber/airfoil mix type bodies can be around 0.1.