One of the most important aspects of aerodynamic efficiency is frontal area. Some trailer manufacturers make an attempt at reducing drag by simply angling the nose of their trailers into a V shape or incorporating a slope nose. Those tricks don’t reduce frontal area however. It’s an uneducated guess, or at best an attempt in reducing the CD (co-efficient of drag), but, believe me… sharp angles don’t help much.
If you’ve ever towed a trailer in the rain you may have noticed the rain doesn’t hit the front of a trailer straight on. It’s actually deflected towards the sides… the reason being that the trailer is always being towed behind something. The air that hits the trailer has to go around the towing vehicle first. It is only when the air finally clears the tow vehicle and starts to fill in the void just behind it, that it hits the trailer. Unless you have a 10 foot tongue, the air won’t fill in around your tow vehicle efficiently enough to even hit the center of a V-nose trailer.
More important to reducing frontal area than a V-shape is the height and shape of the nose of a trailer. If a trailer’s nose is higher than your tow vehicle it’s sticking up into the oncoming flow of air like a huge air brake. Even if it’s lower than your tow vehicle’s cab, the air is still hitting the top forward edge of the trailer. Designing the whole trailer as low and smoothly shaped as possible, so the air can flow over the
Aerovault’s Reduced Frontal Area
A rounded roof, from all sides, makes for a great handling trailer. Here’s why…
The front of the Aerovault is rounded and smooth so wherever the air comes in contact with it, it stays attached and follows the shape of the trailer. Smooth air flow (boundary layer), as opposed to turbulent air flow, is what contributes to a vehicle’s efficiency. You might also notice that this reduced frontal area flows back along the top and sides of the trailer. When air comes over the top of the tow vehicle it strikes the trailer in such a way that it flows smoothly over and around the top and upper sides. It’s the angled sides of the roof that really help reduce frontal area while greatly increasing stability in crosswinds.
With the Aerovault’s low profile it naturally does well in cross flows. Another factor is the angled sides of the roof. In addition to significantly improving air flow from the front, they give a gusty crosswind another way to easily make its way over the top of the trailer from the side.
Better handling and that lack of turbulence is also what minimizes fuel consumption.
Flush Mounted Side Doors Everything on the front and sides of the Aerovault is as flush as possible. That beautiful curved nose at the front dictates custom made, curved aluminum side doors, formed in place on the trailer to be the perfect shape, including high quality flush mounted locking handles with great looking keys.
Making the underside of a vehicle aerodynamically efficient is an integral component of successful racing. With trailers however it appears a seldom given thought. Objects dangling down or exposed below the structure make it difficult for air to make its way to the rear.
The Aerovault has a semi-monocoque chassis and body so the structure is its own frame. This eliminates the need for the numerous and heavy, internal braces and framing systems typically seen on other trailers. The construction methods of other trailers are the same as used with mobile homes. That’s why when you see a typical trailer crashed on the highway, the debris resembles a mobile home that’s been hit by a tornado.
In addition to eliminating a lot of weight, our semi-monocoque design gives the interior as much headroom as possible with no obstructions on which to hit your head (or elbows). Six foot tall Peter Brock is seen here standing inside an Aerovault. The interior not only looks good but it’s extremely easy to clean.
THE BEST MATERIALS & CARE
The Aerovault MKII is made completely of light, strong, sheet and tubular aluminum and composite materials (with the exception of the steel Dexter torsion flex axles). It’s practically indestructible yet this 23’ trailer weighs in at an impressively light 2,340 pounds!
PVC Wrapping Keeps It Perfect
If you know aluminum, you know how easily the surface can scratch when it’s being worked on. We go to the extra time and expense of having all of our flat sheet aluminum shipped to our facility PVC-wrapped which protects it against marring. This wrapping is pulled off only after your Aerovault is completed.
The top rear “inset” area of the roof contains vents which allow interior heat and gases to exchange with outside fresh air. Ever put your freshly run car into a trailer to open it later to find a layer of wet condensation on everything? That won’t happen with an Aerovault.
Minimal “Ramp Gap”
We soon heard from owners of the first Aerovault MKIs, how important it is to minimize the gap between where the bottom of the tailgate and trailer floor meet when the tailgate is lowered. We’ve created a custom hinging mechanism and custom springs that keeps the gap to 1” making it easy to roll a car out of the trailer.
Ever had that terrible experience of pulling into a highly angled driveway or parking lot and hearing the back of your trailer scrape across the pavement? Or couldn’t back into a sloped driveway without jamming the back of your trailer into it? The Aerovault comes with two industrial strength dolly wheels on each corner of its backside. These wheels contact the pavement and glide the trailer’s underside of your Aerovault across without a scratch (or sound)!
We spent a LOT of time finding the lighting we thought worthy of the Aerovault. At minimum, we required all lighting to be LED (bright, low power consumption and maintenance free). Second, it not only had to be functional it had to have a high “cool” factor.
Each Aerovault comes equipped with a commercial grade, remote controlled winch. Simply attach the hook to your car and walk it in, one hand on the steering wheel, the other on the wireless remote to control speed. It’s that easy. Once in, it’s a simple matter of using the four flush-mounted “D” rings in the floor to secure your car with ratchet tie-downs. The two front side doors give easy access to the front of your car while the rear is wide open through the tailgate.
And notice the head room? An Aerovault isn’t as short as you might think. It’s a comfortable height that only seems short because it isn’t as tall as a one story building filled with air to tow like most trailers!
The Aerovault comes standard with its own battery to operate the winch and to be a backup to the trailer’s electric brakes should the trailer somehow become disconnected from your tow vehicle. The battery is automatically charged by your tow vehicle.
ONLY THE BEST… INCLUDED!
The Aerovault comes with a Bulldog hitch. It’s a heavy duty 2 5/16” ball Bulldog (rated at 12,500 pounds even though you’ll never tow more than 7000). The sliding collar ensures a solid lock onto the ball of your tow vehicle. The design also makes it easy to see when it’s locked down, and when it isn’t, so you’re never surprised.
Also provided standard are: “coiled” safety cables so they are always the right length. You don’t have to worry about what to do with any slack. Each cable is rated at 7000 pounds. That means that if your trailer becomes attached to your tow vehicle by only one cable, it will still hold!
The last component to the Aerovault hitch is a standard 7 flat pin plug that connects brakes and lights to your tow vehicle. It also allows your tow vehicle to charge the battery that comes with your Aerovault trailer.
We’ve tried a lot of Jacks over many years and this Fulton unit is the best by far. Not only is the movement smooth but you can choose between a flat pedestal foot or double wheeled. The extended range and adjustable mounting allow you to increase the height of the front of the trailer for easier unloading if you wish.
Let’s Take Some Space To Talk Tires And Wheels
We’ve learned a lot about trailer tires the last several years. In talking with numerous trailer tire and wheel manufacturers the most shocking finding was that they don’t balance trailer tires and wheels. Even the high-end companies that had thousands of dollars invested in balancing equipment sold it all because no manufacturer that ordered tires and wheels from them wanted them balanced. Why? Cost was obvious but what else? It took a while to find out but ultimately it came down to: “No one can tow the average trailer fast enough they would know their wheels/tires aren’t balanced”.
Why do us enthusiasts that know vehicles and have them tuned-up and turned-out to the max put up with this? Probably because we can’t imagine this is happening. The good news is we take care of this with our Aerovaults.
First, we start with some very impressive wheels and tires. Carlisle tires are considered the best trailer tires available and your Aerovault comes with Radial 6-ply Carlisle N speed-rated (87mph) 205/75R15 tires on 5 stud, steel modular wheels. These are the only N speed-rated trailer tires in the World!
Now that we have the right wheels and tires chosen for your Aerovault, we have them balanced! We took our Aerovault on the road with unbalanced wheels and tires. At 70mph the trailer was stable but we started to experience a vibration in the steering wheel. Nothing serious but noticeable and it got stronger as our speed increased.
We had the wheels and tires balanced and took the trailer back out. No vibration at 70mph, or 75 or 80 or 85! Hands off the steering wheel the truck and trailer tracked true and straight down the road with absolutely no vibration! This is how your Aerovault will be setup as well.
We then add a 5th of these great wheels and tires to your trailer for the spare, at no additional charge. It’s included
because everyone should have a spare. Why should you have to order it extra? This full size 15” spare is positioned just inside the passenger side trailer door for easy access.
What could be better? How about a “100% NO HASSLE TIRE REPLACEMENT WARRANTY, INCLUDING ROAD HAZARDS” for the first year you own your Aerovault!
Yes, those great looking moon wheel covers also come standard on your Aerovault.
* When we use the word “best” this is our opinion after being in the trailer business for almost 10 years.
The Aerovault is smart about space. Instead of hauling a lot of air and some plywood cabinets down the road, you’ll find every space inside the Aerovault is sleek, lightweight and useful.
Let’s start with those beautiful curved front side doors. Open them up and you will find a composite storage structure perfectly formed against the curve of the doors. The two shelves inside these deep storage compartments can hold numerous cans, bottles, rags, tools, etc.
Next are convenient side channels on the floor along the inside walls in front and behind the wheel wells. With four channels at almost 4’ long each you can easily secure and strap in those difficult to store items such as jacks,
bottles, tables, chairs, brooms, etc. We use a variety of commercial grade tarp straps to secure items to the numerous attachment rings on the walls and channel uprights. Convenient side channels along the inside walls in front and behind the wheel wells help easily secure those difficult to store items such as tables, chairs, ladders, tie-downs, brooms, etc. We use a variety of commercial grade rubber tarp straps to secure items to the numerous attachment rings on the walls and channel uprights.
Another advantage to having a well-built trailer made of sturdy 1/8” thick aluminum is that custom brackets can be made and installed uniquely for your personal equipment. Many Aerovault owners have gathered together their equipment and taken it to their local fabricator.
We’ve seen some really cool custom ideas implemented such as the an under-the-shelf jack stand holder with jack held in place beneath with floor brackets (as seen here) the bottle holder using rings welded to the door frame.
Note: in an effort to get your Aerovault made in a timely manner we do not make these custom brackets. Channels and wall hooks are included as seen above
WILL YOUR CAR FIT?
A couple of quick points to consider: A standing person can see over most cars which is a good indication they’ll fit inside an Aerovault. And width? The Aerovault has the widest interior space possible for a superior handling torsion flex axle trailer (80” inches in-between the wheel wells).
To demonstrate the point of how roomy the Aerovault is (with the roof off of one so you can see the fit inside),
ALL of the features above come standard on your Aerovault MKII Trailer. Yes, 15 inch wheels and N speed rated tires, a full size spare, battery, winch WITH remote control fob, LED lights inside and out, a fully skinned underside, side doors, swivel jack (your choice wheeled or pedestal). Most of these items are additional cost options on most trailers, if they’re offered at all.