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Forum: EcoModding Central 01-23-2018, 03:35 PM
Replies: 66
Views: 7,963
Posted By vortex
In addition to all the temperature dependent...

In addition to all the temperature dependent factors of efficiency and seasonal fuel blends, a large factor is simple air density increase. Aerodynamic drag force (F) = 1/2 Cd * rho * V^2 * Aref ....
Forum: Aerodynamics 01-23-2018, 12:55 PM
Replies: 4,211
Views: 1,321,771
Posted By samwichse
Some kind of Saab RV... wish I knew more about...

Some kind of Saab RV... wish I knew more about it. All I do know is it's from 1965 and based on a Saab car chassis with a 2-stroke engine.

The ultimate in faired-in wheels though.
...
Forum: General Efficiency Discussion 07-31-2017, 08:59 AM
Replies: 1,316
Views: 336,828
Posted By Fat Charlie
Had a good run yesterday for a Craigslist score. ...

Had a good run yesterday for a Craigslist score. Hooked the trailer up to the Fit (the wife wanted me to hook it up to the minivan and was worrying) and went 65 miles to get a washer and dryer. I...
Forum: General Efficiency Discussion 05-06-2017, 03:13 PM
Replies: 1,316
Views: 336,828
Posted By vskid3
Took a trip to Home Depot, am I doing it right? ...

Took a trip to Home Depot, am I doing it right?
http://i.imgur.com/LOQmKGRh.jpg
Forum: General Efficiency Discussion 02-02-2017, 09:58 PM
Replies: 1,473
Views: 522,404
Posted By cRiPpLe_rOoStEr
https://3.bp.blogspot.com/-zFz2IuISPsg/WHMBR1Ghc8I...

https://3.bp.blogspot.com/-zFz2IuISPsg/WHMBR1Ghc8I/AAAAAAAAJ-I/CfyXRSGBkiklXNZxaZbZ0IjUnmFUNy6ngCLcB/s1600/honda%2Bfit%2Bmk1%2Bpreto%2Brebaixado%2Bcom%2Brodas%2Br%25C3%25A9plica%2Bda%2Bbbs%2Bde%2Braio...
Forum: EcoModding Central 01-11-2017, 11:30 PM
Replies: 424
Views: 41,464
Posted By oil pan 4
The main thing they can build but not sell is...

The main thing they can build but not sell is lean burn engines because the Ethanol Production Agency (the EPA) decided NOx is the root of all evil and must be eliminated at all costs.
Lean burn...
Forum: EcoModding Central 12-20-2016, 01:42 PM
Replies: 424
Views: 41,464
Posted By RustyLugNut
I am willing to give you some real help, but you have to be willing to receive it.

I was hoping you would take to the discussion and not force your views and thus, keep this out of the Unicorn Sin Bin.

I have actually built vapor carbs, GEETs and HHO generators. I also went...
Forum: EcoModding Central 12-20-2016, 01:08 PM
Replies: 424
Views: 41,464
Posted By Frank Lee
Perhaps. I haven't looked into that. ...

Perhaps. I haven't looked into that.



Perhaps. I haven't looked into that. Then again, the cat isn't hurting fuel efficiency so meh.



A mixture of entertainment sensationalism and fact....
Forum: EcoModding Central 12-19-2016, 10:42 PM
Replies: 424
Views: 41,464
Posted By Hersbird
IF a motor is getting much better MPG with some...

IF a motor is getting much better MPG with some kind of vapor setup it is only because it is way outside emissions requirements and making a fraction of the power. Probably only enough to idle or...
Forum: Aerodynamics 12-19-2016, 12:16 PM
Replies: 205
Views: 90,121
Posted By Macskyver
Thanks, I am glad you like it. So far I have...

Thanks, I am glad you like it. So far I have gotten nearly two full tanks of gas through it. The first tank had a lot of highway and freeway miles and was 16.5 MPG. The current tank is pretty much...
Forum: Aerodynamics 11-07-2016, 02:24 PM
Replies: 205
Views: 90,121
Posted By Macskyver
This last weekend I finished up doing the...

This last weekend I finished up doing the exterior varnish. I was originally going to do 10ish coats, but after reading the varnish technical data sheet a little closer, I found that only 2-3 coats...
Forum: Aerodynamics 08-17-2016, 03:19 AM
Replies: 205
Views: 90,121
Posted By Macskyver
I finished up laying out the cedar tonight. Next...

I finished up laying out the cedar tonight. Next up will be trimming the excess and lots of sanding.
...
Forum: Aerodynamics 05-09-2016, 05:24 PM
Replies: 68
Views: 15,940
Posted By aerohead
solar aerodynamics

Here is a road load horsepower curve Honda published for one of the WSC -winning solar racers.You can see that at highway velocity,the majority of power is going to overcome aero drag.And this is a...
Forum: General Efficiency Discussion 04-25-2016, 10:33 AM
Replies: 1,316
Views: 336,828
Posted By redpoint5
I finally assembled the folding HF trailer. It...

I finally assembled the folding HF trailer. It came with everything needed except for decking and the sides.

For the decking, I used cheap 19/32" CDX plywood and stained it with leftover...
Forum: Aerodynamics 04-16-2016, 02:46 PM
Replies: 68
Views: 15,940
Posted By slipknotsv
aerohead my friend here you go ;) Hucho BEST...

aerohead my friend here you go ;)

Hucho BEST 0,14
http://i65.tinypic.com/29krgit.jpg

AST-2
http://i66.tinypic.com/vnz1xt.jpg

Hucho VS. AST-2
http://i64.tinypic.com/4jvxwz.jpg
Forum: Fossil Fuel Free 04-14-2016, 01:55 PM
Replies: 20
Views: 3,416
Posted By botsapper
Crossover e-velomobile, PodRide

A tidy fossil fuel-free and urban conveyance, the Pod Ride. Swedish inventor Mikael Kjellman created a one-person four-wheeled pedal/e-motor velomobile that has the thoughtful combination of...
Forum: General Efficiency Discussion 04-04-2016, 12:09 PM
Replies: 1,316
Views: 336,828
Posted By Xist
http://ecomodder.com/forum/attachment.php?attachme...

http://ecomodder.com/forum/attachment.php?attachmentid=19870&stc=1&d=1459786407
A 'wagon' trailer...... | Station Wagon Forums...
Forum: Aerodynamics 12-17-2015, 01:18 AM
Replies: 55
Views: 14,628
Posted By bluebunny
leading edge slots and slotted flaps are...

leading edge slots and slotted flaps are explained in this ancient film from the 30's. the canard slot follows the principle. starts 7:30 into the film...
...
Forum: Aerodynamics 12-16-2015, 05:54 PM
Replies: 55
Views: 14,628
Posted By aerohead
pressure

I used a VW Westfalia Campmobile electric heater booster fan for my boattail project.It worked perfectly.
Here's the bean bag chair-derived prototype...
Forum: Aerodynamics 12-16-2015, 05:16 PM
Replies: 55
Views: 14,628
Posted By bluebunny
not recommended

OK, I did not give much support for the not recommended rooftop spoiler, so here is my reasonable speculation:
1. The trailer gap is very high, which significantly reduces (or eliminates) the...
Forum: Aerodynamics 12-16-2015, 03:24 PM
Replies: 55
Views: 14,628
Posted By aerohead
truck spoilers

From what I've seen,it takes a wind tunnel to figure out a proper geometry for a truck spoiler.
The following is a set of very degraded TV images I photographed on pause,from a VHS recording of a...
Forum: General Efficiency Discussion 12-14-2015, 01:47 PM
Replies: 1,316
Views: 336,828
Posted By freebeard
With the possible exception of bikini bottoms. ...

With the possible exception of bikini bottoms.

Edit: Oops, off-topic. Here's a 1953 Vagabond
...
Forum: Aerodynamics 11-21-2015, 08:40 AM
Replies: 55
Views: 14,628
Posted By Ecky
http://i1072.photobucket.com/albums/w366/aperduefi...

http://i1072.photobucket.com/albums/w366/aperduefit/IMG_20150411_154431531_HDR_zpslhk0twwv.jpg
Forum: Aerodynamics 11-20-2015, 04:13 PM
Replies: 55
Views: 14,628
Posted By aerohead
gap

http://i1271.photobucket.com/albums/jj622/aerohead2/Gaps.jpg (http://s1271.photobucket.com/user/aerohead2/media/Gaps.jpg.html)
http://i1271.photobucket.com/albums/jj622/aerohead2/Untitled-1.jpg...
Forum: Aerodynamics 11-17-2015, 02:30 PM
Replies: 55
Views: 14,628
Posted By freebeard
Two posts 12 minutes apart? If no-one else has...

Two posts 12 minutes apart? If no-one else has posted, just click Edit and add to the first one.



I was hoping someone else would chime in, but since you ask I made the effort. Searching on...
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