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brucepick · 10-03-2011, 10:42 PM

3dplane,
Thanks for posting that.

I'm not sure yet what went wrong with my spoiler. I suspect one or both of these are causing problems:

1) The side fins are causing turbulence, more than the intended benefit. They are supposed to help keep the air in the cavity above the spoiler panel. Very possibly their turbulence is defeating that gain, if they pressurize the cavity at all.

2) Even if I trim the fins down or eliminate them completely, it will still be a project with sharp angled edges. Supposedly not a good thing. The designs I've seen mostly start up front with a rounded rectangular cross section, and as the boat tail extends rearward the cross section becomes more like a circle or oval.

10-03-2011, 10:42 PM	#30 (permalink)
brucepick OCD Master EcoModder Join Date: Dec 2007 Location: Eastern CT, USA Posts: 1,936 Outasight - '00 Honda Insight Team Honda Gen-1 Insights 90 day: 54.18 mpg (US) Thanks: 431 Thanked 396 Times in 264 Posts	3dplane, Thanks for posting that. I'm not sure yet what went wrong with my spoiler. I suspect one or both of these are causing problems: 1) The side fins are causing turbulence, more than the intended benefit. They are supposed to help keep the air in the cavity above the spoiler panel. Very possibly their turbulence is defeating that gain, if they pressurize the cavity at all. 2) Even if I trim the fins down or eliminate them completely, it will still be a project with sharp angled edges. Supposedly not a good thing. The designs I've seen mostly start up front with a rounded rectangular cross section, and as the boat tail extends rearward the cross section becomes more like a circle or oval. __________________ Coast long and prosper. Driving '00 Honda Insight, acquired Feb 2016.