Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Tuft Test YouTube Civic Kamm Roof Extension

California98Civic · 09-15-2012, 10:51 PM

Way, way-cool. When I look at the way the tufts behave at the trailing edge of the kam, I wonder if the flow is worse than stock. I ask because of this image:

This is a pic of tufts as they stuck to my car's dewy surface one morning last year, peak speed was about 45mph, maybe 50mph. The rear window seems much cleaner than I thought it would be. Not very good data, but something to think about.

Could you do a test with more of the rear of the car covered and with the kamm and no kamm. (Probably not, that's a tall order!)

Thanks, man!!

09-15-2012, 10:51 PM	#2 (permalink)
California98Civic Cyborg ECU Join Date: Mar 2011 Location: Coastal Southern California Posts: 6,299 Black and Green - '98 Honda Civic DX Coupe Team Honda 90 day: 66.42 mpg (US) Black and Red - '00 Nashbar Custom built eBike 90 day: 3671.43 mpg (US) Thanks: 2,373 Thanked 2,174 Times in 1,470 Posts	Way, way-cool. When I look at the way the tufts behave at the trailing edge of the kam, I wonder if the flow is worse than stock. I ask because of this image: This is a pic of tufts as they stuck to my car's dewy surface one morning last year, peak speed was about 45mph, maybe 50mph. The rear window seems much cleaner than I thought it would be. Not very good data, but something to think about. Could you do a test with more of the rear of the car covered and with the kamm and no kamm. (Probably not, that's a tall order!) Thanks, man!! __________________ See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.