1990 Bmw M3 Alpine White Rolling Chassis, Track Car Project 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.

Will BMW-Designed Bobsled Give Team USA An Edge At The Sochi 2014 Winter Olympics? [UPDATE]

When we first reported on BMW's plans to develop a new bobsled for Team USA, the 2014 Winter Olympics were over two years away. Now the games are upon us and BMW's high-tech, carbon fiber sled is ready for competition in Sochi. When we first reported on BMW's plans to develop a new bobsled for Team USA, the 2014 Winter Olympics were over two years away. Now the games are upon us and BMW's high-tech, carbon fiber sled is ready for competition in Sochi. According to the automaker, BMW designers redeveloped the two-man bobsled from the ground up to replace a 20-year-old platform that has failed to produce Olympic gold. "BMW's process reevaluated the complete vehicle system: cowling aerodynamics and construction, chassis and steering geometries, athlete fitment and integration were all critical focal points," the automaker said in a statement. "Computer aided modeling, computational fluid dynamics (CFD), full size wind tunnel testing, on track testing, and athlete scannings were all tools in BMW's development approach." The United States has not won a gold medal in two-man bobsled since 1936. Only time will tell if BMW's contributions will give Team USA an edge at this year's Winter Olympic Games in Sochi. You can watch BMW's Team USA bobsled in action in the video above. UPDATE: Team USA bobsledders Steven Holcomb and Steven Langton won the bronze medal in two-man bobsled, snapping a 62-year medal drought in the event. MORE: American Steven Holcomb and Steve Langton take bronze, winning first two-man medal by a US sled since 1952. http://t.co/3lgynFj7z0 - AP Sports (@AP_Sports) February 17, 2014 BMW Translogic Videos bobsled

Updated 2017 BMW i3 goes 114 miles with new 33-kWh battery

The trend of electric vehicles getting bigger batteries and thus longer ranges continues with today's announcement that the 2017 BMW i3 will come with a 33-kWh battery good for 114 miles of range. That's a solid increase from the 81 miles of range from a 22-kWh pack in the original i3s. Officially called the 2017 BMW i3 (94 Ah) – that's not gonna roll off the tongue – the new battery is the same size as the original pack, but has a more than 50 percent increase in capacity. BMW says that the 114 miles will be available, "varying weather conditions and with the air conditioning or heating turned on," which sure sounds like real-world driving to us. The range-extender version of the i3 will also be available with the new 94 Ah battery. In the days' biggest non-surprise (given the i3 news), the BMW i8 is also getting a range boost and a facelift. Read more about the i3 in the press release below. Related Video: The new 2017 BMW i3 (94 Ah): More range paired to high-level dynamic performance: BMW i3 (94 Ah) with more powerful battery (33 kWh). Up to 114 mile combined1 (hwy/city) range under everyday conditions2. New BMW Home Charger Connect offering additional comfort and connected functions. Woodcliff Lake, N.J. – EMBARGO: May 1, 6:01 pm EDT / 3:01 pm PDT... Today BMW announced that BMW i will offer a new model range of its compact electric car, the BMW i3 and from the 2017 model year will be offering a new version with more than 50% increased battery capacity. The 2017 BMW i3 (94 Ah) has a capacity of 33 kilowatt hours (kWh) thanks to the higher energy density of the lithium ion cells. The BMW i team worked to ensure that the battery dimensions remain unchanged while still offering a significant range increase. Even in everyday conditions 2, the new Battery Electric BMW i3, in varying weather conditions and with the air conditioning or heating turned on, a range of up to 114 miles combined1 (hwy/city) is possible as shown by independent BMW testing cycles3. The driving performance figures of the 170 hp AC synchronous electric motor remain virtually unchanged. The motor propels the BMW i3 from 0 to 60 mph in just over 7 seconds. This makes the BMW i3 both the sportiest and most efficient electric vehicle in its segment with an expected EPA electricity consumption of 27 kWh/100mi. In addition to the Battery Electric BMW i3, the Range Extender model will also feature the 94 Ah battery.