Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Making a more efficient, aerodynamic soapbox gravity race car

orengomotors · 07-24-2015, 04:43 PM

Hi Darcane!
Well, in spain we do the soapbox racing in public streets ( closed during the event) and the track is pretty long, watch this video:
---https://youtu.be/nTqPZygdRRU---
My soapbox is unfinished yet, the max speed that i reached is about 60 km/h ( about 40 mph), but the top level ones reach 95 kmh (near 62 mph).

i'm not sure too about how to calculate the cd, it exists some empirical method?
some advice?

some drawings of the body shape:

07-24-2015, 04:43 PM	#3 (permalink)
orengomotors EcoModding Apprentice Join Date: Jul 2015 Location: Barcelona Posts: 104 Thanks: 75 Thanked 63 Times in 37 Posts	Hi Darcane! Well, in spain we do the soapbox racing in public streets ( closed during the event) and the track is pretty long, watch this video: ---https://youtu.be/nTqPZygdRRU--- My soapbox is unfinished yet, the max speed that i reached is about 60 km/h ( about 40 mph), but the top level ones reach 95 kmh (near 62 mph). i'm not sure too about how to calculate the cd, it exists some empirical method? some advice? some drawings of the body shape: Last edited by orengomotors; 02-03-2017 at 02:23 PM..