09-17-2012, 03:40 PM
|
#11 (permalink)
|
|
Master EcoModder
Join Date: Feb 2012
Location: Ontario, Canada
Posts: 596
Thanks: 133
Thanked 89 Times in 66 Posts
|
To make rounded corners on my kamm on my Neon I used 1/8" x 1" aluminum flat bar bent to shape, then riveted the coroplast to it. Made it pretty easy to get a nice round transition.
__________________
|
|
|
|
 Today
|
|
|
|
Other popular topics in this forum...
|
|
|
|
|
09-22-2012, 06:23 PM
|
#12 (permalink)
|
|
OCD Master EcoModder
Join Date: Dec 2007
Location: Eastern CT, USA
Posts: 1,936
Thanks: 431
Thanked 396 Times in 264 Posts
|
I received this pm from aerohead (Phil Knox) today. I just have to post it here.
Quote:
|
Originally Posted by aerohead
. Man,it looks great to me! The side flow it attempting to flow up into the lower pressure on top of the roof, which careful radiusing might cure, but all of Kamm's cars did this and I don't think your looking at attached vortices at all,Just a little trembling. I think you're there!
And your 'camerman' did an excellent job on the video. I've got to get into this. HD digital video cams are just too cheap now not to!
Thanks for the look,'n congrats on the Kamm!
|
__________________
Coast long and prosper.
Driving '00 Honda Insight, acquired Feb 2016.
|
|
|
|
|
09-22-2012, 09:07 PM
|
#13 (permalink)
|
|
Cyborg ECU
Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,299
Thanks: 2,373
Thanked 2,174 Times in 1,470 Posts
|
Quote:
Originally Posted by brucepick
I received this pm from aerohead (Phil Knox) today. I just have to post it here.
|
That's good news. How will you do the radii? Why not try sheet aluminum? It's better looking and probably more easily rolled into shape.
__________________
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.
|
|
|
|
|
09-27-2012, 09:08 AM
|
#14 (permalink)
|
|
OCD Master EcoModder
Join Date: Dec 2007
Location: Eastern CT, USA
Posts: 1,936
Thanks: 431
Thanked 396 Times in 264 Posts
|
For edge radiusing, 1"-2" PVC pipe looked like a good idea. But this morning I looked at a Prius and a new Insight in parking lot at work. The radius is more like 10"-12" to me eye. I might just go with a hard straight edge and gain the benefits of simpler sturdy construction.
__________________
Coast long and prosper.
Driving '00 Honda Insight, acquired Feb 2016.
|
|
|
|
|
09-27-2012, 12:14 PM
|
#15 (permalink)
|
|
Aero Deshi
Join Date: Jan 2010
Location: Vero Beach, FL
Posts: 1,065
Thanks: 430
Thanked 669 Times in 358 Posts
|
When you finish your new mod, try to find a nice hill to coast down and track your speed & times to go between 2 points the faster the better (50-60mph). Then go down it several times with the mod on & mod off. This will be a sure indicator of how it works. Tuft testing while fun & somewhat informative really is not a true test of effectiveness.
|
|
|
|
|
09-30-2012, 04:18 PM
|
#16 (permalink)
|
|
Master EcoModder
Join Date: Sep 2012
Location: Texas
Posts: 252
Thanks: 18
Thanked 43 Times in 23 Posts
|
Do you think if I made one of these out of a trunk spoiler (trying to make something that looks cool/ not out of signs) would it be at all beneficial? Mine would only be like 8 inches long but maybe if I use this data (13 degrees) it would be just a little bit better than stock? I like this idea and I feel like I can make a really nice looking one.
I have a picture but photo bucket is being stupid
|
|
|
|
|
09-30-2012, 06:34 PM
|
#17 (permalink)
|
|
Cyborg ECU
Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,299
Thanks: 2,373
Thanked 2,174 Times in 1,470 Posts
|
Quote:
Originally Posted by Jakins
Do you think if I made one of these out of a trunk spoiler (trying to make something that looks cool/ not out of signs) would it be at all beneficial? Mine would only be like 8 inches long but maybe if I use this data (13 degrees) it would be just a little bit better than stock? I like this idea and I feel like I can make a really nice looking one.
I have a picture but photo bucket is being stupid
|
Let's see the pics. I would bet most people would agree the results are dependent on details we don't know yet. It is possible that you might remake the spoiler as a trunk spoiler and do better than with the roof extension/wing.
__________________
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.
|
|
|
|
|
10-02-2012, 02:09 PM
|
#18 (permalink)
|
|
Master EcoModder
Join Date: Sep 2012
Location: Texas
Posts: 252
Thanks: 18
Thanked 43 Times in 23 Posts
|
sorry for the late response! i finally got photo bucket to work. this is my idea. just an idea right now. ive seen other roof wings you can buy but they arnt designed for aero dynamis, just show. this is a wing from my nissan 240sx. obviously the ends stick out to far and will need to be delt with.
 |
|
|
|
|
10-02-2012, 04:42 PM
|
#19 (permalink)
|
|
OCD Master EcoModder
Join Date: Dec 2007
Location: Eastern CT, USA
Posts: 1,936
Thanks: 431
Thanked 396 Times in 264 Posts
|
I'm not sure how important it is to close the gap between roof and start of spoiler.
In studying the template,
( see these links: http://ecomodder.com/forum/showthrea...tml#post266562
and http://ecomodder.com/forum/showthrea...tml#post116820 )
I found that ideally, the roof extension for this generation Civic coupe needs to begin several inches forward of the rear window's top edge. So I wanted a thin material that could hug the roofline.
If I had fiberglassing skills I could build this project that way. I just happen to be partial to 2.7 mm. lauan plywood, primed with oil base primer. I thin the paint a bit so it's not too goopy.
The first link above was my attempt at a cooler looking design. However it wasn't very successful when I did coastdown tests. And the panels wanted to move a lot under the pressure of air flow. The design in this thread is stable at highway speeds.
__________________
Coast long and prosper.
Driving '00 Honda Insight, acquired Feb 2016.
Last edited by brucepick; 10-02-2012 at 06:25 PM..
|
|
|
|
|
10-02-2012, 05:46 PM
|
#20 (permalink)
|
|
Cyborg ECU
Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,299
Thanks: 2,373
Thanked 2,174 Times in 1,470 Posts
|
Quote:
Originally Posted by Jakins
sorry for the late response! i finally got photo bucket to work. this is my idea. just an idea right now. ive seen other roof wings you can buy but they arnt designed for aero dynamis, just show. this is a wing from my nissan 240sx. obviously the ends stick out to far and will need to be delt with.
|
I think it sticks too far out on the sides, no? I can't imagine that it won't produce more trouble than its worth, aerodynamically. Perhaps you could cut it, but that would probably defeat the OEM look. I think you'll want something else, closer to what brucepick tried, I suppose.
__________________
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.
|
|
|
|
|
