~ Auto Buzz ~: Sources: Three Challenges Behind Tesla Model X Delay

Tuesday 10 February 2015

Sources: Three Challenges Behind Tesla Model X Delay



Tesla Model X


The oft-delayed Tesla Model X is currently set for a Q3 2015 launch, two years after it was originally supposed to enter showrooms. How did this happen?



Green Car Reports offers three reasons for the gull-winged crossover’s delay from its anonymous sources, the first being the bane of all electric vehicles, range. Tesla had hoped to pull 250 miles from the 85-kWh model by using side-view cameras in lieu of door mirrors. However, doing so would require some changes to safety standards, standards that are currently under-study by the National Highway Traffic Safety Administration. With nothing on the horizon, the automaker will have to find those miles elsewhere for now.


Another issue is the rear “falcon” doors. While keeping the elements out has been solved, side-impact protection and structural issues remain. With expectations of safety to be equal to the Model S, the doors would need strong interlocking beams to protect the rear passengers, at the expense of increased weight and possible consumption of precious interior space. In turn, the doors’ torsion springs have to better spread the weight through the narrow spine of the aluminum roof, lest warpage occur. The automaker may end up using more expensive titanium to get that it needs out of that part of the crossover.


Finally, the dual-motor powertrain has to be able to tow “a trailer with a couple of motorcycles or personal watercraft.” Doing so would require extensive cooling measures to ensure the electric motors can sustain the output needed to two for miles/hours on end, which means foregoing the glycol-coolant system in the Model S P85D for refrigerant to actively remove the heat.


While Tesla claims the Model X is “on track for a Q3 launch,” Green Car Reports‘ sources point to production beginning as late as 18 to 24 months from now, a timeframe that would overlap the low-cost Model 3’s projected production start.


The post Sources: Three Challenges Behind Tesla Model X Delay appeared first on The Truth About Cars.


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