Archive for the 'technical' Category

my how you’ve grown

Monday, September 29th, 2008

Nearly two decades ago the Honda/Acura NSX shook up the performance car scene.

This year, the Nissan GT-R is said to be doing the same.

But could the two cars be any more different?

Looking at this picture I stumbled across on the web – is the NSX is too much like a Formula 1 car or is the GT-R is too much like an SUV?

proof that an EVO’s neutrality is based largely on its trick differentials (and that the Ralliart is no WRX killer).

Wednesday, September 17th, 2008
The problem is that the Ralliart is a heavy machine, what with all that transmission, and the SST transmission has an annoyingly tardy getaway. All would be forgiven were the Ralliart a rousing drive, but for all its claimed power the engine never really lets rip. You find yourself revving it to death to goad it along, easily done given the strange shortness of the intermediate gear ratios, and it’s much harder work than a torquey turbomotor should be. It sounds nondescript, too. But it will all come good in the corners, yes? No. This Lancer really misses its tougher brother’s AYC and the resultant favourable torque distribution to each rear wheel. There’ll be no lovely powerslides here; go too quickly into a tight bend and it understeers like the nose-heavy car it is. – evo

hardware & specifications matter less than software & subjective feel

Friday, August 8th, 2008
Although the [Ridgeline’s] entire engine is carryover, the all-aluminum 3.5L V-6 does have a new Magnesium dual-stage intake manifold that bumps the horsepower and torque up by three and two, respectively. Additionally, Honda keeps the current five-speed automatic, but does offer slightly different gear ratios, in some cases changed only 0.2 percent, to help to improve overall responsiveness. Of note, throttle response off idle is vastly improved, making it feel like the truck has more power off the line because of how strongly it jumps from a stop. A new computer software program works with the new gearing strategy to make it feel like there’s more power than the small gains in hp and torque would suggest. – Motor Trend

how do they do it?

Saturday, June 28th, 2008

You’ve heard by now of the many changes (e.g. direct injection, dual clutch sequential manual gearbox, a revised suspension and rear track…) made to the 911 (no doubt to counter the astonishing R8). What you probably hadn’t heard is this…

DFI isn’t the only new system incorporated into the classic flat-six layout. In fact, not one component is carried over from the previous boxer, and, amazingly, the new sixes are built with 40-percent-fewer parts, which reduces overall weight by 12 lb and rotational mass by 7 percent. Other advantages of the new design are a 50mm shorter height and mounting points lower in the chassis for a ground-hugging center of gravity. – Motor Trend

I’m slackjawed…

weight - the final frontier

Saturday, June 21st, 2008

When buying an amplifier for your home theatre, people in the know take into account the weight of the thing; more being better.

With cars, more weight is a sign of lazy engineering, and only the most advanced companies manage to retain strength while keeping weight down.

I applaud GM for making their cars have integrity at last, but like the last generation Hyundais the attempts are dragged down by the avoirdupois.

As products from GM’s friendly brand see tremendous progress, weight reduction appears to be the final frontier. Interiors are improving, Opel is making Saturn beautiful, and ride and handling are matching or surpassing the competition. All Saturn has to do to make the Vue a worldbeater is pare a measly 500 pounds. Okay, maybe that’s a bit much. But cut some fat, and the Vue—already a very good miniature ute—will take another key step toward excellence. – Car and Driver

That said I prefer the current GM approach to the current everyone else approach – i.e. make it so light and tinny that it feels disposable (even if it isn’t).

Performance is never just about numbers…

Saturday, June 14th, 2008
today’s engineers understand they are designing cars that have to be appreciated at different levels, that the straightforward goal of pure performance is no longer practical in an era when cars can easily be designed that are faster than you can reasonably drive them on the road. We see the focus of design shifting to the experience of performance… Even Ferrari tunes its exhaust to sound racy — at the expense of power. – Sam Posey, Road & Track

how’d they do that?

Thursday, June 12th, 2008

In an age when advertising and moviemaking’s flooded with computer generated work and even more flooded feature lists, the commercial ‘M3 Revolution’ was a revelation.

You can see the spot – and how they made it – here.

experts and gizmos don’t necessarily do what they’re supposed to

Monday, June 9th, 2008

Today I had to correct a field of experts that claimed that an adaptive suspension increased active safety. Not your self proclaimed armchair expert but one charging a sum with a number of zeros behind a 1 – 6 to be exact.

I disagreed, and minutes later – coincidentally – stumbled across one of many examples.

Mercedes limited chassis revisions to a light retuning of the adjustable Airmatic suspension system and a 10-percent quicker steering ratio. The results are a very heavy sedan that feels a little lighter on its feet. Still, this sport sedan is not as athletic as its rivals. Its test track performance numbers …are very good, but not great. Both the 550i and A6 4.2 S-Line outhandle and outstop the E550, but the more relaxed ride and handling compromise of the Mercedes feels better at anything short of the most fevered pace. Even in the stiffest of its three suspension settings, the Mercedes is sprung more softly than the BMW or the Audi, putting a higher premium on a smooth ride than ultimate agility. – Edmunds

(In case you hadn’t noticed, it’s not the hardware, it’s the software – or more specifically how it’s written…)

I’ve never understood this either… and yet suckers line up every minute

Saturday, May 10th, 2008
I’m no fan of convertibles. Manufacturers spend gazillions on structural stiffness and eliminating noise, vibration and harshness, so why would you want to lose all that integrity and be charged more for an inferior car? – evo

Why Aussie engineered cars are a good fit for the US market…

Sunday, April 27th, 2008
While Australian and American appetites are in perfect alignment on performance, there’s divergence when it comes to design tastes. Ford Australia’s U.S.-born design director, Scott Strong, has summed up the distinction nicely. “Aussies like American scale, but European aesthetics,” he’s said in past interviews. Ford Australia dynamics engineers would add that the preference for European also extends to ride and handling, steering, and stopping. – Motor Trend