EcoFins White Stick-on Vortex Generator Semi Truck Trailer Fuel Economy Eco-Fins

ECOFINS AIR FOILS FOR TRUCKS, TRAILER, RV’S AND MOTORHOMES
WHITE
Saves Up to
5%
in
FUEL
Improves handling
Less driver fatigue
Easy to Install in about an hour per truck or trailer
Pays for itself in
TWO to THREE MONTHS
(Estimate based on $2.50 per gallon fuel cost, 6 to 8 miles per gallon before install, 150,000 miles per year, a 2% improvement)
Dimensions: 4.5625″ long X 3.125″ wide X 1″ high
Install three per foot on 4″ centers for maximum
effectiveness
Requires about 80 per truck or trailer
Requires about 90 per truck or trailer with lower skirting
Requires about 50 per RV or Motorhome
Other colors available: Black, Silver,
Midnight Blue,
& Glow White (glows in the dark)
Custom colors are also available contact for information
ECOFINS™
help to reduce drag effect by spinning the air as it leaves the rear of the vehicle. Each vortex lasts several meters in length, keeping the airflow controlled and restricting it from becoming turbulent. This allows the vehicle to move forward more easily as it encounters less drag. The result is a reduction in required energy (fuel) to maintain the required speed.
Each EcoFin produces two counter rotating solid body vortices that rotate at approximately 3000 rpm. These vortices are about 4 to 5 inches in diameter and trail behind several meters. They help to reduce turbulence and suction drag at the tractor-trailer gap and at the rear of the trailer.
A lack of trailer streamlining causes a partial vacuum to form at the rear of the trailer at highway speeds. This causes turbulent air in the form of large vertical (swirling motion) eddies to tumble into the partial vacuum and the large alternating (swirling motion) eddies cause the trailer to sway. Disturbances from passing vehicles or obstacles tend to amplify these (swirling motion) eddies and increase the trailer’s tendency to sway, increasing driver work load and fatigue, increasing drag and
lowering fuel consumption
. Streamlining the trailer by tapering consumption would be the best solution but is not practical due to a necessary reduction in trailer capacity and massive changes to loading facilities.
The large square area at the trailer rear causes a partial vacuum to form as the vehicle moves through the air at speed. These are usually devices that physically alter the trailer rear by using inflatable sails, fiberglass boat tails or rigid metal panels that extend to taper the trailer rear. However, these devices can be cumbersome, expensive, heavy and prone to collision damage. Physically tapering the trailer or load would be the best solution but is not feasible due to trailer capacity and loading operations.
Installation Instructions
EcoFins
should be installed when vehicle is clean and skin temperatures are at or above +40F (+5C). The surfaces must be free of all contaminants.
EcoFins
should be installed on warm, clean, dry, flat surfaces. If a degreaser is used, it must be completely removed before installation. Regardless of the cleaning agent used, the final cleaning process should use a final cleaning agent such as rubbing alcohol or paint thinner.
DO NOT USE any window cleaners containing ammonia.
Use clean shop rags. For installation purposes, the cleaner, the dryer, the warmer, the better.
Location on Vehicles:
EcoFins
should be installed as close as possible to the back (trailing) edge of the vehicle. If the
EcoFins
must be moved forward to avoid rivet heads etc, keep the wide edges of the
EcoFins
within 12-18 inches
(30-45cm)
of the back for best performance.
EcoFins
are effective shielding gaps or reducing turbulence entering undesirable areas. Any vehicle component with an edge that is 90 degrees to the airflow is a possible
EcoFins
location provided that location receives an adequate supply of relatively undisturbed airflow. Examples: forward of wheel wells, hung tool boxes, trailer skirts etc.
EcoFins
are also effective on roof trailing edges of automobiles with a rear window slope exceeding 30 degrees. For
ALL
applications, ensure that the leading (wide) edge of the
EcoFins
is absolutely flush with the mounting surface.
Trailers:
Place
EcoFins
forward of the rain ridge on the roof.
CAUTION
: Ensure trailer side
EcoFins
placement is adjusted so that when barn style trailer doors are opened, the doors and hinge bolts do not impact any
EcoFins
and cause damage.
Tractor:
The ideal surface is flat but
EcoFins
can be installed on slightly curved surfaces as long as the leading edge is absolutely flush and the majority of the tape is in contact. If the pointed tip is slightly raised, it poses no performance degradation.
Installation:
Do not install on flexible side extender rubber strips, exhaust stacks, or heat shields.
Install
EcoFins
3 per foot which is one every 4 inches on center.
EcoFins
are 4-1/2” long, 3-1/8” wide, and 1” high.
(Metric: 12cm long, 8.2cm wide, 2.5cm high)
Spacing is 4”
(10.1cm)
on center. Increase spacing to avoid rivet heads, lights, grab bars etc. Do NOT decrease spacing as this may decrease performance. Locate the vertical line where the leading (wide) edges of the
EcoFins
will be. Using duct tape, fasten the tape end to the top of the vehicle just forward of this line. Unwind the tape to the bottom of the vehicle. When the tape hangs absolutely vertically, secure the lower end with tape. Install the first
EcoFins
at the top at an appropriate inch mark. Continue every 4 inches until complete. The tape provides accurate spacing and a perfect straight edge. The warmer the surface temperature, the faster the tape will set.
If you have any questions you can contact us at 1 844 628 9059 between 8am and 5pm Mountain time or come by at 1030 East Commerce Drive, Suite 200, St. George, Utah 84790.