2011 Nissan Maxima S on 2040-cars

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Is the skill of rev matching being lost to computers?

If the ability to drive a vehicle equipped with a manual gearbox is becoming a lost art, then the skill of being able to match revs on downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. The usefulness of rev matching in street driving is limited most of the time – aside from sounding cool and impressing your friends. But out on a race track or the occasional fast, windy road, its benefits are abundantly clear. While in motion, the engine speed and wheel speed of a vehicle with a manual transmission are kept in sync when the clutch is engaged (i.e. when the clutch pedal is not being pressed down). However, when changing gear, that mechanical link is severed briefly, and the synchronization between the motor and wheels is broken. When upshifting during acceleration, this isn't much of an issue, as there's typically not a huge disparity between engine speed and wheel speed as a car accelerates. Rev-matching downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. But when slowing down and downshifting – as you might do when approaching a corner at a high rate of speed – that gap of time caused by the disengagement of the clutch from the engine causes the revs to drop. Without bringing up the revs somehow to help the engine speed match the wheel speed in the gear you're about to use, you'll typically get a sudden jolt when re-engaging the clutch as physics brings everything back into sync. That jolt can be a big problem when you're moving along swiftly, causing instability or even a loss of traction, particularly in rear-wheel-drive cars. So the point of rev matching is to blip the throttle simultaneously as you downshift gears in order to bring the engine speed to a closer match with the wheel speed before you re-engage the clutch in that lower gear, in turn providing a much smoother downshift. When braking is thrown in, you get heel-toe downshifting, which involves some dexterity to use all three pedals at the same time with just two feet – clutch in, slow the car while revving, clutch out. However, even if you're aware of heel-toe technique and the basic elements of how to perform a rev match, perfecting it to the point of making it useful can be difficult.

ROEV lets you use multiple charging networks with one account

It may be a textbook case of a first-world problem, but any EV driver who doesn't want to carry two or three plug-in vehicle charging station cards when one would do is about to get a little smile on their face. This morning at the LA Auto Show, the new ROEV Association was announced that will let EV drivers carry just the one card. While you would think the all-caps ROEV stands for something, none of the pre-announcement materials nor the website explain it that way. Instead, it seems to just be a play on rove, which makes a lot of sense. There are three charging networks involved in ROEV: Blink, ChargePoint, and EVgo. Conveniently, these are the three largest in the US and have a combined 17,500 public chargers across the country. If you've got an account with one of these three networks, once ROEV goes into effect (expected in the spring of 2016), you'll be able to use that card at any participating charger without signing up for another account. Your personal details are kept private, ROEV says, and the companies coordinate behind the scenes to make it work. Pricing details were not disclosed. Besides the three main charging networks, two automakers are also founding members of ROEV: BMW and Nissan. ROEV says that Audi and Honda have also have already joined the Association and the organization wants to pull in all EV stakeholders to make electric vehicle charging easy. Fans of EV technology will note that ROEV has nothing to do with promoting either the CHAdeMO or the SAE Combo (CCS) fast charging standard. The Leaf is a CHAdeMO car while the i3 uses CCS, for example. The charging networks, of course, provide both kinds of plugs and don't promote one over the other. Tesla and its Supercharger network are not involved in ROEV, but Tesla drivers can, of course, participate in ROEV.

Datsun reveals new On-Do budget sedan in Russia [w/video]

When Nissan revived the Datsun brand name, it essentially hit the "undo" button on the rebranding it undertook decades ago. But this time, the Datsun name is being used solely as a budget brand for developing markets. The reborn marque launched in India this past July with its Go hatchback, returned in September with the Go+ minivan and revealed the Redi-Go concept just last month. And now it's back again with the new On-Do sedan.
Launched in Moscow by CEO Carlos Ghosn, the On-Do was designed and engineered in Japan specifically for the Russian market - Nissan's fifth largest worldwide - where it will be built at the AvtoVaz plant in Togliatti. Decidedly budget-oriented, the Datsun On-Do is a four-door, five-seat econo-box measuring 172 inches long, 67 inches wide and 60 inches tall with an 18.7 cubic-foot trunk which Datsun describes as class-leading. Punctuating an otherwise bland shape is a large front grille and lighting front and rear that looks (and very well might be) bigger than the wheels.
Not that the Datsun On-Do needs a big contact patch to transfer power to the road: motivation is provided by a 1.6-liter engine with a grand total of - wait for it... wait a little longer - 87 horsepower. Which might strike you as a reasonable amount of muscle, considering the 400,000 rubles Datsun is getting for the On-Do (but consider that translates to about $11,300). That's a couple grand more than what Nissan gets for the Micra in that other giant northern country, or about the same amount it gets for the Versa in the US (which sells in Russia for 499k in rubles) - both of which are powered by what is in all likelihood the same 1.6-liter four but producing 109 hp. Of course Russia has different tax rates than the United States or Canada, but with such little power, the Datsun would fall into Russia's lowest tax bracket.