Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com

EcoModder.com (https://ecomodder.com/forum/)

- Aerodynamics (https://ecomodder.com/forum/aerodynamics.html)

- - Magical Fuel Savers (https://ecomodder.com/forum/showthread.php/magical-fuel-savers-22112.html)

Magical Fuel Savers

Since it's easier to criticize than create, and reading comprehension seems not to be a strong suit around here, I hereby abandon this topic.

Cars are very different underneath.
And it's a bit involved to get it off the ground to work on it.

Being a bit too involved, it also doesn't really fit the no effort / magical benefit scheme.

Quote:

Originally Posted by shovel (Post 309919)

The Unicorn Corral is full of every sort of kit and gizmo overlooked by automotive manufacturers (somehow!) that can, with virtually no effort, improve power and fuel efficiency by ten billion percent for the low low cost of $159.95 and here are some testimonials! :thumbup:

But many of those products have been on the market for quite some time, implying that whether they work or not, they must be selling often enough to reward the people selling them... so why isn't anyone buying sheets of perforated polyethylene http://www.usplastic.com/catalog/ima...eet/46171p.jpg and cutting it into shapes that are likely to fit under the average car, and selling that as a fuel saving, performance enhancing kit?

It fits the qualifications of something fairly simple overlooked by manufacturers and possible to install on almost any existing car, reversibly without voiding warranty - only falling short of true unicorn status due to its probability of actually working.

I don't have the savvy to try my hand at business, but if I were the enterprising sort I'd be all over that, because there doesn't appear to be anything like it on the market thus far.

If used as a skin,Hucho will tell you that it won't work perform do to the holes,as air will not support any load and merely deflect away so as to attempt equilibrium from the stressor.
If it's used over a skin as a turbulator we fall into the one-size-fits-all conundrum,presuming that all vehicles,and all points on them have identical boundary layer thickness.Which also doesn't pass the smell test.
A good fast back or square back doesn't suffer separation,so this 'film' would be limited to notch backs which already have VGs engineered for and efficacy demonstrated.
So what did the manufacturer miss? And would Barbie and Ken want it on their Fashionista GT?

Quote:

Originally Posted by shovel (Post 310002)

The same part you did?

:D

Can you enlighten me? I've obviously missed the boat.
Okay! I re-read the part about being 'under' the car.
So you're advocating a perforated belly pan after the professional aerodynamicists with Ph.Ds in mechanical engineering who have spent a career around world-class wind tunnels exploring low drag and have published books that say 'don't use perforated panels anywhere,at anytime'?

I was reading through and right at the bottom of the original post was:

"improve fuel economy by 20%"
www.fuelxxxxx.ca

"more power less fuel"
?_?_??_? - ??

"$69 Kia optima chip, 60 hp +7mpg"
ccccc.com

see the adds are supporting your point!

Maybe this needs to go back to the Unicorn Corral?

Quote:

Originally Posted by kach22i (Post 310124)

Maybe this needs to go back to the Unicorn Corral?

quickly :turtle:

Quote:

Originally Posted by shovel (Post 310157)

Here's the part where I roll my eyes at your fixation on an auxilliary detail.

The reason I brought up perf was for ease of fitment as a "universal" kit. You don't like perf? screw perf then. Let's start over:

Belly pans actually address an aerodynamically dirty part of most cars on the road
No kit is currently marketed to address this

With me so far?

There are plenty of snake oil products, and always have been, and their continued existence implies that they sell well enough to make someone money.

Since a belly pan... of the NON PERFORATED KIND!!! http://img842.imageshack.us/img842/1...m182192322.png has a likelihood of improving aero performance on a typical car, it seems such a thing would sell well.

Or you can keep arguing about perforations and miss the point of the thread again.. whatever.

*perhaps,any consumer,savvy enough to envision the aerodynamic benefit of a DIY belly pan would also be savvy enough,and have researched enough to realize that any material which was a candidate for panel material would necessarily be non-aspirated in nature.
* the ease of fitment argument of the perforated material would be a non-starter as much as an argument that an empty plate of food would be easier and quicker to consume than a full plate of food.
*Quite literally,a would-be fabricator would 'see right through' the argument.
*That's not to say that you couldn't get rich selling the stuff.There's no shortage of fools.People are still buying uber-lubes with PTF and continue to attest to its benefit.
*You probably won't get much traction here at the 'Forum' though.There's just no 'science' to support any claims you could make as to efficacy.
*And you'd want to always watch your back.
PS,your 'NON-PERFORATED' technology has been superseded by coroplast.I have no idea how you could reverse the popularity of this material which has already made it under so many vehicles.

Quote:

Originally Posted by aerohead (Post 310409)

*And you'd want to always watch your back.

what does that even mean? :confused:

So you're saying belly pans don't work at all no matter what they're made of and that nobody should ever attempt to assemble & market any sort of kit with some/most of the work already done... or.. um.. they have to "watch their back" ?

No, I believe he said why mess with perforated material when you can use regular choroplast and get better results. Unless you have better, which seems unlikely.