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2020 Acura NSX Suspension Deep Dive

The Acura NSX has been a special car as long as I’ve been in the business. The first one came out in 1990, the same year I started my career in automotive engineering. I vividly remember driving one briefly back then when we brought one in for benchmarking. I'd drive it again 22 years later when my previous employer bought a used 1991 example for a long-term test. Reader interest was sky-high and the car was still gorgeous, but the march of time and automotive engineering had clearly left it behind. Then, in 2016, a second-generation NSX emerged, and it was packed with bleeding-edge thinking. It has a 3.5-liter twin-turbo V6, but this new NSX is a hybrid with an electric motor-generator sandwiched between the engine and its nine-speed DCT transmission. Two more electric motors – one for each wheel – power the front axle. There they can add traction, regenerate electricity under braking and dole out hyper-accurate levels of torque vectoring. The carÂ’s tire package was changed from Continental SportContact 5 to SportContact 6 tires in 2019, and numerous suspension re-tuning tweaks came along with them. The result is a lively and well-balanced car that is relentless when driven hard and a pussycat around town. LetÂ’s see what theyÂ’ve got going on under there.   At first glance the 2020 Acura NSX appears to have dual wishbone front suspension. But we canÂ’t tell for sure because that big two-piece brake rotor is in the way. The coil-over shock looks obvious, but a few odd details are apparent even from here.   This view also seems to indicate double wishbone suspension. But the pivot axis (green arrow) between the upper and lower ball joints looks wrong – itÂ’s far too vertical. WeÂ’re missing something. But I would be remiss if I failed to point out a few other things before we moved on. For one, the front drive axle confirms this to be an all-wheel-drive machine. Second, the forged aluminum damper mounting fork (yellow) that envelops the axle is mounted to the lower arm about 75% out from the armÂ’s inner pivot. The spring and damper motion ratio would be 0.75-to-1 relative to wheel movement, with a tiny reduction due to its lean angle. Lastly, just look at the huge cast aluminum upright (white). Beautiful. Normally these are called hub carriers or steering knuckles, and I use the terms interchangeably. But the motorsports-derived term upright is normally applied when the piece is tall and, well, upright like this one.   This explains everything.

A look inside Honda’s “Safety For Everyone” research and development operation

RAYMOND, Ohio—As part of its long-running “Safety for Everyone” campaign, Honda has established the audacious goal of what it calls a “zero-collision society.” But rather than making big claims about developing a fully-autonomous vehicle, which Honda hasnÂ’t done, the company is trying to chip away at the more than 37,000 vehicle-related fatalities that occurred in the U.S. in 2017 with a multi-pronged approach. Here in central Ohio, engineers are working with state-of-the-art facilities and equipment to boost active safety systems like its HondaSensing suite of safety technology with old fashioned passive systems like structural steel frames or new airbag designs that protect passengers in a crash. Honda provided members of the press with a rare tour inside its Honda R&D Americas headquarters this week. Honda officials say that increasingly, safety — and specifically, third-party ratings from the likes of the National Highway Safety Traffic Administration and the Insurance Institute for Highway Safety — figure into the top three factors consumers weigh when purchasing a vehicle. Honda and Acura have 10, 2019 models that have earned IIHSÂ’s Top Safety Pick or Top Safety Pick+ ratings, and all 15, 2019 model-year Honda and Acura vehicles that have undergone NHTSA crash testing have earned a 5-star overall rating. And Honda prides itself on its growing list of safety firsts, including the first upward-deploying front passenger airbag, in 1990 in the Acura Legend; first omni-directional crash-test facility, in 2000; and the first autonomous braking system, in the 2006 Acura RL. It hopes its new three-chamber airbag goes industry-wide and joins that list. “ItÂ’s part of our companyÂ’s culture,” said Art St. Cyr, business head unit and vice president of auto operations for American Honda Motor Co. “We have a philosophy at Honda that we want to be a company that society wants to exist. That means we have to protect our customers. ThatÂ’s part of the whole mantra of doing this.” Opened in 1984, the 1.6 million square-foot Honda R&D Americas facility, located in the countryside about 45 miles northwest of Columbus, employs around 1,600 people and is HondaÂ’s largest research-and-development facility outside of Japan. Its Advanced Safety Research facility opened in 2003.

Acura builds 345-horsepower RDX A-Spec for SEMA

The 2019 Acura RDX is great — a return to form for the sporty compact luxury crossover. So there's no real harm in giving one the SEMA treatment, especially since it entails a real motorsport tie-in and some legitimate performance parts. As for the giant graphics, well, it's SEMA after all. Graham Rahal races for Honda in the IndyCar series, and he also has his own performance parts company — named, sensibly enough, Graham Rahal Performance — which he started in 2017. They sell some private-label bits manufactured by other companies to their spec, some off-the-shelf parts, and they do tuning and installation work on customer cars. Acura gave the job of building the SEMA RDX to Rahal. There's a fair bit going on under the hood to get the RDX to 345 horsepower from the factory 272 ponies. The 2.0-liter turbo engine gets a bunch of enhancements. The turbo, intake, exhaust manifolds, downpipe, and cat-back (a GRP design) are all aftermarket. There's a customer intercooler, too. KTuning did the ECU with a custom map. On the handling front, the RDX wears Eibach springs, StopTech brakes, HRE wheels at 21 inches, and Michelin Pilot Sport 4S tires. The RDX started life as an A-Spec model in Apex Blue Pearl, and from there GRP applied carbon fiber garnish to the mirrors, grille accents, and lower fascia. Troy Lee Designs did the exterior graphics, and inside there's more carbon fiber and a custom steering wheel (courtesy of Max Papis's MPI Innovations shop). The RDX will be on the show floor if you'd like to check out the Rahal shop's handiwork. Related Video: