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Forum: Aerodynamics 03-24-2023, 05:46 AM
Replies: 22
Views: 1,861
Posted By t vago
Here's another idea for a truck aerocap - very...

Here's another idea for a truck aerocap - very little roof/sail interaction.



And it did take some fair amount of work.
Forum: Aerodynamics 03-23-2023, 10:58 AM
Replies: 22
Views: 1,861
Posted By aerohead
'referring to?'

Yes, exactly. It's the Bournoulli Theorem at play.
Air over the truck is taking a longer path than along the side, yet arriving at the same time; requiring a higher velocity to compensate.
There's...
Forum: Aerodynamics 03-20-2023, 11:24 AM
Replies: 22
Views: 1,861
Posted By aerohead
'tuft testing'

Flow looks good!
It does indicate the formation of attached longitudinal vortices, along the roof / sail panel intersection of the cap, which carry relatively high drag.
A solution would be either...
Forum: Aerodynamics 03-16-2023, 02:16 PM
Replies: 16
Views: 1,217
Posted By freebeard
There will be a future review that compares the...

There will be a future review that compares the (in alphabetical order) Aptera, Arcimoto and [stretched] Solo.
Forum: Aerodynamics 02-08-2023, 12:48 PM
Replies: 17
Views: 2,126
Posted By freebeard
That's a tough one. It has to accomodate movement...

That's a tough one. It has to accomodate movement in three dimensions (pitch roll and yaw). A flexible solution would have to resist flutter.

Shorten the gap as much as possible.
...
Forum: Aerodynamics 02-03-2023, 12:39 PM
Replies: 188
Views: 251,880
Posted By aerohead
' TESLA Model X & AST-III'

here's my 'two-cents' :
1) While all streamlined profiles originate from bodies of revolution, their performance is NOT strictly limited to bodies of 'circular' cross-section.
2) Streamline...
Forum: Aerodynamics 05-30-2013, 03:03 PM
Replies: 172
Views: 58,570
Posted By redneck
Boat tail - Redneck style...

Well, I couldn't stand it anymore. After seeing the results of the other boat tailed vehicles here on the site, I decided it was time to jump in the pool and join the party...:)

It may not be as...
Forum: Aerodynamics 10-26-2011, 08:29 PM
Replies: 82
Views: 28,557
Posted By Daox
Foam in a can is 3-4 dollars around here I think....

Foam in a can is 3-4 dollars around here I think. As I mentioned I used a great stuff gun, it gives much better control and is reusable unlike a normal can of great stuff. I have a picture of it...
Forum: Aerodynamics 08-19-2011, 05:18 PM
Replies: 169
Views: 60,995
Posted By CigaR007
http://img545.imageshack.us/img545/5808/sideviewr....

http://img545.imageshack.us/img545/5808/sideviewr.jpg (http://imageshack.us/photo/my-images/545/sideviewr.jpg/)


http://img845.imageshack.us/img845/3777/front1q.jpg...
Forum: Aerodynamics 11-07-2010, 09:12 PM
Replies: 540
Views: 260,462
Posted By 3-Wheeler
This is an early picture of the LED lights on the...

This is an early picture of the LED lights on the side of the extension.

http://ecomodder.com/forum/attachment.php?attachmentid=7301&stc=1&d=1289180994

Here is a closeup of the of LED cluster...
Forum: General Efficiency Discussion 10-01-2010, 02:16 AM
Replies: 68
Views: 31,149
Posted By Nels
Talking Finally got it!

At long last, after spending 93 days in transit beyond the build date, we took delivery of the Fiesta this week:

Just off the transport:
http://members.lsol.net/gop4evr/unlinked/100_4310.jpg...
Forum: Aerodynamics 07-25-2010, 10:23 PM
Replies: 540
Views: 260,462
Posted By 3-Wheeler
A vise and several pieces of wood are adjusted to...

A vise and several pieces of wood are adjusted to an angle of 13° in preparation of glueing the underside foam at this angle.
...
Forum: Aerodynamics 07-16-2010, 10:03 PM
Replies: 540
Views: 260,462
Posted By 3-Wheeler
The two tail light mounting brackets are getting...

The two tail light mounting brackets are getting "angled" blocks attached to allow through bolts to rest at these angles.
...
Forum: Hypermiling / EcoDriver's Ed 06-23-2010, 12:59 PM
Replies: 1
Views: 1,315
Posted By wagonman76
Don't Exhaust Charlevoix

Petoskey News-Review - Don't 'exhaust' Charlevoix (http://www.petoskeynews.com/news/article_167dfa7e-7ec5-11df-9e06-001cc4c03286.html)

While many of us agree that there are better ways to help...
Forum: Success Stories 03-10-2010, 08:16 PM
Replies: 28
Views: 18,833
Posted By Bajascoob
Light Weight AeroCap F-250

Light Weight AeroCap F-250
Near Final result
Forum: Aerodynamics 03-02-2010, 03:18 PM
Replies: 27
Views: 8,338
Posted By ccrider
here is a couple of pictures of the cap where it...

here is a couple of pictures of the cap where it meets the cab


http://i964.photobucket.com/albums/ae130/carmine580/DSCF0899.jpg


...
Forum: Aerodynamics 03-01-2010, 04:01 PM
Replies: 27
Views: 8,338
Posted By ccrider
tacoma aerocap ABA test

here is the ABA test on my Tacoma aerocap.

my truck is a 2002 Toyota Tacoma regular cab with a 2.4 4 cylinder engine 5 speed transmission with 206,000 miles on it. the truck has no mechanical...
Forum: Aerodynamics 02-22-2010, 09:33 PM
Replies: 6
Views: 4,108
Posted By bondo
Aerolid Flow Visualization Test (video of F150 aero shell tuft testing)

Finally got this to download onto youtube after literally months of trying. This test was done in May of 2007. The video has some bumpy camera shots but luckily there is some smooth video too.
...
Forum: Aerodynamics 02-22-2010, 04:40 PM
Replies: 28
Views: 4,744
Posted By MetroMPG
Hi Brett - First: let me say I have huge...

Hi Brett -

First: let me say I have huge respect for what you're doing and I hope you become a zillionaire because of your cap. I praise it to everyone I talk to about pickup truck aero.

The...
Forum: Aerodynamics 02-20-2010, 01:12 PM
Replies: 91
Views: 42,160
Posted By MetroMPG
This notion seems to come up frequently, and I...

This notion seems to come up frequently, and I want to make sure it's not misinterpreted.

Aero mods on their own aren't less effective in cold weather.

But the overall efficiency of the truck...
Forum: Alternative Transportation 02-06-2010, 03:47 AM
Replies: 74
Views: 13,293
Posted By Bicycle Bob
It usually takes quite a bit more oil energy to...

It usually takes quite a bit more oil energy to produce a calorie of food energy, even as grain. And steady bicycling will reduce your weight if you don't modify your diet or other exercise...
Forum: Aerodynamics 02-04-2010, 01:38 PM
Replies: 91
Views: 42,160
Posted By ChazInMT
Thumbs up It is Done, Pics to Prove it

Well, It is Finished. The result is not too bad. I now know exactly what Fubeca is speaking of when he says, "It looks better in Pictures than it does in reality", the heatshrink is a pain to work...
Forum: Aerodynamics 02-01-2010, 10:51 AM
Replies: 91
Views: 42,160
Posted By moorecomp
Maybe you guys doing this should look at radius...

Maybe you guys doing this should look at radius chine plywood boat builders. This is from one of the sites I follow:

August 2005 Build Photos...
Forum: Aerodynamics 01-31-2010, 11:25 PM
Replies: 91
Views: 42,160
Posted By ChazInMT
Progress Update w/ Photos

Progress Report for ya. I got the skin on. What a pain, I think this now qualifies me as an Assistant to the Helper of a Novice Shipwright Apprentice.

Each of those 1" corner strips are quite...
Forum: Aerodynamics 01-26-2010, 06:50 PM
Replies: 91
Views: 42,160
Posted By ChazInMT
Progress Update

Today I finally got a part of the "Skin" made to put on the rib frame....and naturally the first thing one must do at this point is chuck it on the back of the ol rig and see if I've made any...
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