DragTimes Tests New Launch Mode On Tesla Model S – (w/video)

DEC 17 2015 BY MARK KANE 6

Top Performers Will Earn Themselves A Model S P90DL

Model S P90DL

DragTimes recently tested its Tesla Model S P90DL (Ludicrous) with the latest Launch Mode update.

Launch Mode is a special feature, which puts motor torque against brakes for a while (up to 4 seconds), so that after releasing the brakes, the car accelerates from a slightly different operating point for the motor.

Most people wondered whether Launch Mode would bring some benefits to acceleration times and it seems the answer is yes.

The car is quicker, although the difference is thin. In 0-60 mph (90.5 km/h) you will not feel the difference:

Software Version 7.0 release 2.7.77 (without Launch Mode)

0-60 MPH: 2.86 seconds
0-100 MPH: 7.56 seconds
1/4 Mile: 11.32 @ 118.3 MPH

Software Version 7.0 release 2.9.40 (with Launch Mode)

0-60 MPH: 2.82 seconds
0-100 MPH: 7.46 seconds
1/4 Mile: 11.26 @ 118.7 MPH”

Moreover, DragTimes notes that some runs were similar and points out that the car itself is equipped with lighter wheels:

“We also did some back to back 0-60 MPH testing with and without launch mode and while the best 0-60 MPH time obtained was using Launch Mode some of the runs were dead even between using Launch Mode and not using it.  Wheels on the car are lighter than stock by Pulse a division of Speed Design GmbH.”

Source: DragTimes

Categories: Tesla, Videos

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6 Comments on "DragTimes Tests New Launch Mode On Tesla Model S – (w/video)"

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I wonder if they realize that your best launch times in an EV aren’t going to be after driving around for a while, but immediately after getting the battery to a full charge.

This is because a full charge in any battery is measured by the voltage of that battery. So when the battery is at maximum capacity, it’s also capable of producing more volts and thus more power. And your 0-60 times would thus be faster, which is probably where Tesla is getting its measurements.

Except that EVs don’t work that way.

BLT is correct. The motors are rated significantly higher than the present onboard battery capacity is, to max them out. That physically limits motor performance. “Burning” energy while repeatedly testing, lowers your speed results, since the smart fuse allows massive power (1500 Amps) to the motors in big bursts. Less overall SOC, actually limits acceleration in this context.

I thought I recalled Elon stating that 90% was optimal. Perhaps my memory is failing me.

Where did 90.5km/h come from?

60mph x 1.6 = 96km/h

Tesla is behind on two cars, and we get this: four hundreths of a second. This is what happens when a product managers let their twelve year old son access their iPhone. Confirm those emails, people!