Go Back   EcoModder Forum > EcoModding > Aerodynamics
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 11-15-2020, 10:42 AM   #81 (permalink)
In the fasting lane
 
RedDevil's Avatar
 
Join Date: Dec 2012
Location: Nieuwegein, the Netherlands
Posts: 3,781

Red Devil - '11 Honda Insight Elegance
Team Honda
90 day: 53.55 mpg (US)

It - '09 Hyundai I10 Active Cool
Team Hyundai
90 day: 29.76 mpg (US)
Thanks: 1,548
Thanked 2,086 Times in 1,341 Posts
I wasn't happy with the aero part either as he calculates the effect of the extra surface against the Cd of the car. Of course, wider tires would most likely affect the Cd of the car...
Yet, the area increase isn't entirely fair either as it happens underneath the car. That area should be counted in with the total area in the first place, though maybe less so when a car has a flat bottom like the Tesla he uses for his calculation.

All in all the aero effect is not that big.

I thought the coast down values are weighed in with the ABC formula he was talking about? Each car has its own formula, hence the differences in the effect a size change has - and maybe that the actual sidewall height and stiffness were not provided.

__________________
2011 Honda Insight + HID, LEDs, tiny PV panel, extra brake pad return springs, neutral wheel alignment, 44/42 PSI (air), PHEV light (inop), tightened wheel nut.
lifetime FE over 0.17 Gmeter or 0.1 Mmile.



It always takes longer than you expect, even when you take into account Hofstadter's Law.

When I drive a car I'm a driver. When I'm sitting on my couch I'm a biker.
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com