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Search took 0.03 seconds. Search: Posts Made By: wyatt
Forum: Aerodynamics 01-23-2020, 09:59 AM
Replies: 1,084
Views: 256,947
Posted By wyatt
I went 70 with mine routinely. 12 inch tires...

I went 70 with mine routinely. 12 inch tires rated for 55.
Forum: Aerodynamics 01-16-2020, 06:18 PM
Replies: 1,084
Views: 256,947
Posted By wyatt
Non-articulating trailers fall under a different...

Non-articulating trailers fall under a different category, and are treated as a part of the vehicle frame.
Also, even if it were articulated, some states do not require a tag for light trailers,...
Forum: Aerodynamics 01-15-2020, 07:56 AM
Replies: 1,084
Views: 256,947
Posted By wyatt
Do you have a picture of your setup? Everybody...

Do you have a picture of your setup? Everybody likes pictures :-)
Forum: Aerodynamics 06-15-2018, 07:39 AM
Replies: 71
Views: 9,425
Posted By wyatt
It’s the smallest trailer that Harbor Freight...

It’s the smallest trailer that Harbor Freight sells, but the one with the bigger 1080 pound axle and 13” tires. No issues yet, and at least 5000 miles on it. Most of those miles were significantly...
Forum: Aerodynamics 12-15-2017, 11:40 AM
Replies: 276
Views: 39,153
Posted By wyatt
Prius Aero Trailer

This setup was good for just over 44MPG at 70 mph for over 800 miles in ideal 70 degree conditions (still had to run AC because of all the glass a Prius has...).

Just a side note, the friends E150...
Forum: Aerodynamics 12-13-2017, 05:21 PM
Replies: 276
Views: 39,153
Posted By wyatt
I nominate SedanKamm. If you have interest in...

I nominate SedanKamm. If you have interest in aerodynamic trailers, my buddy and I have built a couple. One actually improved the fuel efficiency of a Ford E150 on the highway, the other minimally...
Forum: Hybrids 03-03-2016, 09:01 AM
Replies: 843
Views: 328,700
Posted By wyatt
I had never thought of a Prius body as a base for...

I had never thought of a Prius body as a base for a kit car, but that looks like what you are doing :). Looks like you might want to beef up the floor, since I suspect the original shell got a lot of...
Forum: Aerodynamics 09-07-2015, 05:43 PM
Replies: 776
Views: 284,334
Posted By wyatt
Shelby Cobra Daytona

I read an article about the Cobra Daytona. There were restrictions on what they could do as far as modifying a stock car went. They could either alter the drivetrain, or alter the body. Altering the...
Forum: Aerodynamics 06-09-2015, 12:36 PM
Replies: 1,084
Views: 256,947
Posted By wyatt
I'll assume your math is correct. It's nice to...

I'll assume your math is correct. It's nice to have the peace of mind (I would test it out to verify). If I was putting on a decent sized boat tail, I would do the same analysis.

I looked into a...
Forum: Aerodynamics 10-22-2014, 09:20 AM
Replies: 1,084
Views: 256,947
Posted By wyatt
How do you compress the shock to it's midpoint so...

How do you compress the shock to it's midpoint so you can attach it to your vehicle?
Forum: Aerodynamics 03-07-2014, 02:12 PM
Replies: 1,084
Views: 256,947
Posted By wyatt
You may want to give some thought to moving the...

You may want to give some thought to moving the gap covers to the inside. I see those getting caught by the wind, and at best, causing drag, and at worst, being ripped off. The "Open" picture shows...
Forum: Aerodynamics 03-06-2014, 05:12 PM
Replies: 1,084
Views: 256,947
Posted By wyatt
I can't tell if that's a joke or not, but it...

I can't tell if that's a joke or not, but it won't work. The alternator is belt driven, and has a power draw from the engine. Your concept would be wheel driven, and have the same (if not more) power...
Forum: Aerodynamics 01-17-2014, 03:59 PM
Replies: 1,084
Views: 256,947
Posted By wyatt
Make sure to do some tuft testing to make sure...

Make sure to do some tuft testing to make sure your slope is good all the way back. I think it should be, but it never hurts to check.

Also if you have a smart phone, you can download a level app...
Forum: Aerodynamics 12-09-2013, 04:59 PM
Replies: 1,084
Views: 256,947
Posted By wyatt
Non-attached flow was seen when the front end was...

Non-attached flow was seen when the front end was too small, and then it picked up further back. It was just too steep of an angle (we knew it would be at the time, but we liked testing). We didn't...
Forum: Aerodynamics 12-09-2013, 02:48 PM
Replies: 1,084
Views: 256,947
Posted By wyatt
We did some testing on various sized (strategicly...

We did some testing on various sized (strategicly sized) trailers a couple years ago. We found that as long as there was attached flow along the entire top length of the trailer, that there was a...
Forum: Aerodynamics 10-03-2013, 07:24 PM
Replies: 1,084
Views: 256,947
Posted By wyatt
If you can reattach flow onto the trailer you...

If you can reattach flow onto the trailer you have the opportunity to see gains, at least relative to with no attachment. On a non-articulating trailer, you could just seal the gaps and go that way. ...
Forum: Aerodynamics 07-10-2013, 11:28 AM
Replies: 37
Views: 12,265
Posted By wyatt
I didn't remember seeing that one in your trailer...

I didn't remember seeing that one in your trailer thread (http://ecomodder.com/forum/showthread.php/full-boat-tail-trailer-gap-fillers-toyota-t-7839-25.html#post294074), but they were right where you...
Forum: Aerodynamics 06-21-2013, 01:10 AM
Replies: 37
Views: 12,265
Posted By wyatt
I saw in Hucho's book, that a Sedan had some...

I saw in Hucho's book, that a Sedan had some nominal Cd number, and a SUV type vehicle had a higher Cd. But when both were paired with a trailer with a large leading front end, the SUV-Trailer had a...
Forum: The Lounge 03-28-2013, 12:48 PM
Replies: 2
Views: 1,399
Posted By wyatt
Cliff Swallows Evolve to Avoid Traffic

Ok, it's not really "ecomodder discussion", but I thought a lot of people would find it interesting. It seemed like posting it in "Off-Topic Tech" fit best, but I had considered Aero since it's about...
Forum: Aerodynamics 02-11-2013, 11:15 AM
Replies: 189
Views: 108,869
Posted By wyatt
That's the way I understand it. We had a thread a...

That's the way I understand it. We had a thread a while back about Railroad Train Aerodynamics (http://ecomodder.com/forum/showthread.php/railroad-train-aerodynamics-7466.html), and that's what I...
Forum: Aerodynamics 02-10-2013, 11:55 PM
Replies: 189
Views: 108,869
Posted By wyatt
The long nose on the bullet trains is there to...

The long nose on the bullet trains is there to help reduce the shock load when they enter a tunnel.
Trains are very long when compared to road-going vehicle. Even double semis don't hold a candle to...
Forum: Aerodynamics 02-04-2013, 01:49 PM
Replies: 189
Views: 108,869
Posted By wyatt
I remember reading that as long as the extension...

I remember reading that as long as the extension is not increasing cargo volume, that on semis and the like, a 4' extension is allowed for aerodynamic pruposes. I have seen a number of extensions on...
Forum: Aerodynamics 01-06-2013, 06:56 PM
Replies: 189
Views: 108,869
Posted By wyatt
I have seen where the optimal shape has a cavity...

I have seen where the optimal shape has a cavity at the back end that is ~12% the depth of the opening's minimal width. I think for our purposes, either is acceptable, but the closed back end keeps...
Forum: Success Stories 11-21-2012, 12:55 PM
Replies: 107
Views: 72,752
Posted By wyatt
Sorry for the delay. I have remembered to do this...

Sorry for the delay. I have remembered to do this at the least opportune times :).
https://lh4.googleusercontent.com/-ApQMkfGsI3s/UK0QwoNEpVI/AAAAAAAACHQ/19FU9PwIoEU/s1104/IMG_20121121_083546.jpg...
Forum: Success Stories 10-05-2012, 12:24 PM
Replies: 107
Views: 72,752
Posted By wyatt
Fixed that for ya.

Fixed that for ya.
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