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Tougher than steel: Wood pulp could make lighter auto parts

KYOTO, Japan — The global push among carmakers to make ever lighter vehicles is leading some auto suppliers in Japan to turn to what seems like an unlikely steel substitute — wood pulp. Japanese researchers and auto component makers say a material made from wood pulp weighs just one-fifth of steel and can be five times stronger. The material - cellulose nanofibers — could become a viable alternative to steel in the decades ahead, they say, although it faces competition from carbon-based materials, and remains a long way from being commercially viable.> Related: Jay Leno drives the Renew cannabis car — hemp you can't dent Reducing the weight of a vehicle will be critical as manufacturers move to bring electric cars into the mainstream. Batteries are an expensive but vital component, so a reduction in car weight will mean fewer batteries will be needed to power the vehicle, saving on costs. "Lightweighting is a constant issue for us," said Masanori Matsushiro, a project manager overseeing body design at Toyota. "But we also have to resolve the issue of high manufacturing costs before we see an increased use of new, lighter-weight materials in mass-volume cars."A NEW PROCESS Researchers at Kyoto University and major parts suppliers such as Denso Corp, Toyota's biggest supplier, and DaikyoNishikawa Corp, are working with plastics incorporated with cellulose nanofibers — made by breaking down wood pulp fibers into several hundredths of a micron (one thousandth of a millimeter). Cellulose nanofibers have been used in a variety of products ranging from ink to transparent displays, but their potential use in cars has been enabled by the "Kyoto Process," under which chemically treated wood fibers are kneaded into plastics while simultaneously being broken down into nanofibers, slashing the cost of production to roughly one-fifth that of other processes. "This is the lowest-cost, highest-performance application for cellulose nanofibers, and that's why we're focusing on its use in auto and aircraft parts," Kyoto University Professor Hiroaki Yano, who is leading the research, told Reuters in an interview. The university, along with auto parts suppliers, are currently developing a prototype car using cellulose nanofiber-based parts to be completed in 2020.

Next Mazda MX-5 Miata to weigh a ton(ne), literally

Looking at recent spy shots of the fourth-generation Mazda Miata, it's obvious this sporty little roadster will grow in size compared to the current model, but it's also going on a diet. At the Tokyo Motor Show, Auto Motor und Sport sat down with Mazda executive Kiyoshi Fujiwara, who gave a little more insight into the Miata's redesign.
Fujiwara said that they're aiming for a curb weight of a tonne (metric ton), which is 1,000 kilograms or right around 2,200 pounds, for the next-generation Miata. This would make the roadster at least 300 pounds lighter than the current NC Miata, but still about 200 pounds heavier than the original NA.
There is no indication as to how Mazda will go about removing that much weight from the bigger car, but with as popular as the power retractable hard top (PHRT) model is on the current car, the new Miata may ditch this feature to lose its weight. Improving the power-to-weight ratio appears to be a key goal of the Mazda team, so we also wouldn't be surprised to see a more powerful engine underneath the longer hood.

Preorders open for the Mazda MX-5 Miata RF Launch Edition

After unveiling the gorgeous 2017 Mazda MX-5 Miata RF Launch Edition at the 2016 New York International Auto Show, the Japanese automaker announced plans to give loyal customers first dibs on one of the 1,000 models. Preorders are open at 12 PM EST on Monday, September 26th at the Mazda MX-5 RF Launch Edition website. Customers who were sent an invitation with a personalized code will have a limited time to put a $500 refundable deposit down on a limited model. Customers also have the opportunity to select the dealership where they would like to complete the transaction. Pricing for the MX-5 RF has also been announced with the sports car starting at $34,685, including destination and handling. That's roughly $9,000 more than a base MX-5 Miata. Deliveries of the sports car will begin in February 2017. While the MX-5 RF is a looker, $9,000 is a lot of change for the Launch Edition, which only adds a black roof and special badges over the regular MX-5 RF models. All 1,000 Launch Editions will be finished in Machine Gray with a black roof panel and Auburn Nappa leather on the inside. Buyers who opt for the Launch Edition will also get a numbered 42mm Tourneau watch, and can choose between an automatic and a manual transmission. The MX-5 RF Launch Edition should sell out quickly, as the 2015 Mazda MX-5 25th Anniversary Edition sold out in roughly 10 minutes when it went on sale in 2014. Didn't get an invite to preorder the Launch Edition? Worry not, as Mazda will open the special model to the general public on October 3, if there are any left. Related Video: Featured Gallery 2017 Mazda MX-5 RF: New York 2016 View 13 Photos News Source: MazdaImage Credit: Live photos copyright 2016 Drew Phillips / AOL New York Auto Show Mazda Convertible Lightweight Vehicles Special and Limited Editions Performance pricing mazda mx-5 rf