You are here

The Corvette C7 GT3-R from Callaway Competition

News International-French

27 Apr 2016

In the Corvette C7 GT3-R, designed and built by Callaway Competition, carbon is omnipresent.

The Callaway Competition Corvette C7 GT3-R is ready for the new racing season – packed with power, yet still lightweight. The car will turn heads thanks to both fast lap times and its pioneering design. Raku-Tool board and liquid materials specially developed for the composites industry by RAMPF Tooling Solutions have also played their part in this.

Corvette C7 GT3-R developed entirely in-house
Callaway Competition has been racing for over 25 years, and is the longest-serving team in the ADAC GT Masters, the prestigious race series for GT3-class sports cars. There has never been a race in this series without a Callaway Corvette on the grid – with 23 race wins, the Callaway Corvette Z06.R GT3 is the most successful racing car in the history of the ADAC GT Masters.

For the new Corvette C7 GT3-R, however, only the chassis and the up to 600 HP, water-cooled, 6.2-liter V8 engine were taken from the series model. The development of the vehicle – done completely in-house – began with the design of the technically-relevant parts in CAD in mid-2014. The vehicle design was finalized by the end of the year, and construction began in Leingarten in spring 2015.

The molds for the racing car were milled directly using the CAD data. RAMPF Tooling Solutions delivered high-quality Raku-Tool board materials that were used to create molds for producing various lightweight parts for the C7 GT3-R. Raku-Tool resin infusion was used for those parts that were not manufactured in prepreg.

  • The brake air duct was manufactured using molds made from the Raku-Tool WB-1404 working board material. The epoxy infusion system Raku-Tool EI-2500 / EH-2970 was used in the production of the carbon-fiber parts.
  • The central console was manufactured using molds made from the Raku-Tool WB-0700 epoxy working board material.
  • The outer door panel was manufactured using molds made from the Raku-Tool WB-0801 working board material.
  • The rear fender was manufactured using molds made from the Raku-Tool MB-0600 modeling board material.
  • The front fender was manufactured using molds made from the Raku-Tool WB-1404 working board material and the Raku-Tool WB-0600 modeling board material.

Liquid, paste, and board materials specifically developed for the composites industry
RAMPF Tooling Solutions offers a comprehensive range of liquid, paste, and board materials specifically for the composites industry. This includes epoxy and polyurethane systems, and ensures consistent product quality with excellent mechanical end properties. “These new plastics and technologies enable the greatest possible benefit to be achieved in lightweight construction using composites,” says Heinz Horbanski, Managing Director of the international modeling and mold engineering specialists from Grafenberg, near Metzingen.

The central contact for the composite manufacturing process was Esterlössl GmbH, from Rutesheim. The carbon-fiber components in the prepreg process were manufactured by Murr-based ubc GmbH and Brebeck Composites GmbH in the Czech Republic. Schäfer Modell- und Formenbau GmbH and Kegelmann Technik GmbH from Rodgau-Jügesheim were each responsible for doors, interior equipment, and the front hood.

Incidentally, it is not only racing enthusiasts in Germany who will have the pleasure of seeing the C7 GT3-R in action on the track. The car meets the specifications and safety requirements of the FIA, the world governing body for automobiles and motor sport, and can therefore be used in races around the world.

More information: