Many enthusiasts wonder what’s involved with aero design. Does it just look cool and is a design really functional? Voltex of Japan takes it pretty seriously. If they don’t believe a aero piece performs correctly, they’ll revise a design until they achieve the desired results. Voltex’s methods may seem meticulous, but it’s put them at the top of the list when anyone thinks of aero design in the tuning world.

Here are some photos from a wind tunnel testing day with Voltex.

The Voltex + Sun Auto EVO, a.k.a. “Cyber EVO”, is hoisted to a platform centered to the wind tunnel.

Much preparation is done to before actual testing. This includes attaching string to the entire body of the car including the underpanel. This aids in examining the direction of air flow around the vehicle.

Here’s a view down the wind tunnel pathway.

Mr. Nakajima, owner and founder of Voltex, examines the SPL canards before testing.

Here’s the staff making sure that all electronics are correctly calibrated to give precise measurements.

Staff member standing by, getting ready to record the results.

Some of the electronics use to display and record readings.

Although geared for street applications, the Voltex Type 1S wing is also wind tunnel tested for performance.

CFD for Voltex wings are conducted with the help of the local university.

Just a reminder, Evasive Motorsports is an authorized dealer for Motul, and we offer Motul fluids and oils for all our technical services. Whether for track or street, we use only the best for our customers!

Call us to make a service appointment!
PH: 626.336.3400, Mon-Fri, 9am-6pm PST

Evasive Motorsports is now an official pre-tech station for SpeedTrialUSA. If you’re participating at any of their road racing events, give us a call to schedule a pre-tech appointment before attending the event. Best of all, pre-tech inspection is free of charge. If done at the track on the day of the event, it’s $20 at the event. Tech inspection is mandatory before getting your car on the track, so it’s best to do it ahead of time. We will also be able to make any recommendations on your current setup and can provide wheel alignments and cornerbalancing if needed.

For a list of upcoming SpeedTrialUSA events, please visit www.speedtrialusa.com.

For those that haven’t heard of Voltex, it’s a specialty aero parts company started in 2003, located in Suzuka, Japan (conveniently near the circuit!). Nakajima, the Voltex founder, is very experienced in aerodynamic design and engineering. He has worked for various racing teams in Japan where he made composite body parts for F-3 and Formula Japan racecars.

He has also worked in UK where he was an engineer for CROSBY GRP. The CROSBY GRP provides services for F1 and WRC and has worked with drivers such as Jean Alesi.

Aside from the aero kit outfitted on the Sun Auto Cyber EVO, Voltex may be most famous for their carbon GT wings. Voltex currently has over 10 customizable designs. Practically any vehicle application and usage type can be applied to and benefit from a Voltex GT wing. Voltex GT wings are crafted to meet the Super Taikyu “Endurance” regulations, and about 50% of race cars in Class 4 uses Voltex wings for Super Taikyu Series.

Evasive Motorsports is an authorized distributor of Voltex products in the U.S. We also have an Evasive exclusive s2000 aero kit, designed by Voltex coming out later this year. Evasive Motorsports competes in time attack events, and all our project vehicles utilize Voltex aero from GT Wings, Full Aero Kits, Carnards, and Difffusers. Voltex aero keeps all our cars planted well around the turns and corners during competition.

If you have any questions regarding Voltex products, please don’t hesitate to contact us!

626.336.3400, Mon-Fri 9am-6pm PST

Voltex Type V GT Wing pictured on the Evasive Time Attack EVO:

Mike with Nakajima-san after a Time Attack event:

Here at Evasive, we are always looking to modify existing parts to improve lap times. Here is what started off as an Amuse bumper. It’s been cut in half and lowered 20mm with a custom 1 piece splitter molded in place. The 2 piece design allows the bottom section to be mounted on the chassis, increasing its aero efficiency. A custom duct has also been put in place to allow direct cold air to a J’s Racing snorkel. All work is done in house. Give us a call if you would like any custom modifications done.

626.336.3400, Mon-Fri 9am-6pm PST

In conjuction with TEIN, Evasive Motorsports is proud to present the Evasive SPEC TEIN Series for track enthusiasts. TEIN has customized these parts with specifications by Evasive Motorsports. These specifications are the result of continuous testing by Evasive Motorsports on the race track. The final products presented here are optimized for road racing. We only work with the best to bring you the best!

The Evasive SPEC version of the TEIN SR-C includes both smaller base valve and corresponding smaller diameter shims. All other aspects of the damper remain the same as an off the shelf SR-C kit. Why was this set-up created?

In both base valves (normal and small) there is a bypass. This bypass controls oil flow at low speed damping. (Slow Speed Damping is most related to initial steering response). The bypass valve is smaller on the TEIN Evasive SPEC SR-C, increasing the ability to control the oil flow, and the damping force is greater at slow piston speed than a normal base valve spec coilover. This results in improved initial steering response, which can easily be felt on turn-in.

The smaller shims allow for quicker damping force (DF) response with its reduced diameter. The faster DF response means quicker steering response, quicker transition from compression to rebound and vice versa… allowing the damper to react more quickly to any type of movement.

Smaller shims also have a greater range of motion in terms of bending. This allows for more oil control at low speed damping. The larger shims have more of an on/off type movement at low speed damping.

Although the price is higher than the regular SR-C, there’s been extensive time and work from both TEIN and Evasive to develop these. If you’re serious about the track, you will definitely not be dissappointed.

Click here to order

Evasive Motorsports has been working with Voltex of Japan to develop new aero for the Honda s2000. They are well known in the EVO and WRX/STi communities for their work on the Cyber EVO and Cusco Impreza WRX. We have convinced them that there’s a high demand for quality aero in the s2000 community. So now, we bring you the initial sketches of the design based on our feedback.

The aero kit will be a AP2 bumper add on, complete with sidesteps and rear diffuser. Optional canards and splitter will also be available for those looking for additional down force. The splitter will also be available in honeycomb dry carbon for extra strength. Voltex conducts wind tunnel tests all their parts to obtain data to make changes if necessary. Stay tuned for updates on development!

Thanks to Tein USA we have the opportunity to test out the new Super Racing Damper for the EVO X. From initial impressions the shocks look similar to the EVO 9 setup except for the rear external reservoir now mounted remotely. The EVO X SRC offers motorsports valving and M.S.V technology which should perform better than previous SRC dampers. We will be installing this on our shop car and hopefully to have these tested at the track soon. Check back with us for updates more information.

We’ll be trying out a new wheel and tire size combination for the S2000 for 2009 time attack events. New fenders are needed, but it should produce good results.

Through years of experience at the track, we’ve recently decided to offer suspension tuning to our customers in the Los Angeles area. We offer wheel alignment, digital corner balancing, and general suspension installation and tuning.

We offer different setups depending on your driving style, car modifications, and intended purpose of vehicle. We are available after hours and weekends for those of you that need last second jobs before track events. Please call us during our office hours to schedule an appointment.

626.336.3400
Mon-Fri 9am-5pm PST