Gordon Murray Design claims that new chassis frame technology cuts vehicle weight in half

Based around using a tubular metal frame to support body panels, the iStream system was developed by former Formula One and sports car designer Prof Gordon Murray as a method for reducing costs in automotive manufacturing, while also minimising vehicle weight.

Originally, the system used thin-wall, high-strength steel tubing, as this was the preferred material for many car manufacturers, but Murray’s company, Gordon Murray Design (GMD) has now unveiled an updated version of iStream using aluminium thin-wall tubing and honeycomb recycled carbon-composite panels in place of stamped metal.

This new version of the process is claimed to deliver a vehicle only half the weight of a standard metal vehicle of the same class and size, while achieving new levels of rigidity and durability and also maximising the flexibility of the production platform for manufacturers.

Along with IStream Superlight, GMD has also launched a lightweight seat, using the same materials, techniques and technologies as the IStream chassis. Incorporating glass or recycled carbon-fibre composite on a tubular frame, the IStream lightweight seat is claimed to be 30% lighter than a typical car seat, and can be designed to suit all types of passenger vehicles, including aerospace and rail.