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The roadster is a ROADSTER, not a track car.
By loose definition it is a car to be driven in a spirited fashion on a long winding road on a sunday afternoon, while enjoying the sport of driving, preferably with the top down.
Even with the carbon ceramic brakes and vector torque steering will likely have considerable understeer, by virtue of its weight.
The same closed body style that gives it its low drag coefficient to reach 250 mph also prohibits any sort of air cooling.
The same thick dense wiring that conducts the needed amperage for incredible performance, also retains electrothermal heat.
The same spoiler that stabilizes the car at 200 mph provides insufficient down force for track performance (hence the 2 wings available for the new ZR1)
The Jetson style steering wheel is incompatible for a technical track.
Currently the roadster has no dashboard to convey critical car information front and center to the track driver who must always be looking at the drive line through the corners.
Many drag strips require roll bars for cars capable of sub 10 second runs.
As a track guy and an EV guy, I'm super excited about this.
I pray (Once a week), they get the heat soak issue down, I'm sure they will get it down for 0-100 sprints all day long, but the track is an entirely different animal....
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Some on TMC in this forum have noted that the new Roadster front motor is very likely geared differently than the rear motors and optimized for high speed cruising, like the S/X front motor is. So that could explain the ability of the new Roadster to accelerate incredibly fast and also be able to attain a very high top speed.0-60 in 1.9 secs and top speed 250mph does not compute in an electric car.... unless it's got gears
In the Dual Motor S/X cars, since the front motor is geared differently than the rear, there are in effect two gears in the car. That is in part why the Dual Motor cars have greater range than the RWD cars with the same battery pack size.In the Model S/X we drive with only one first gear.
In the Dual Motor S/X cars, since the front motor is geared differently than the rear, there are in effect two gears in the car. That is in part why the Dual Motor cars have greater range than the RWD cars with the same battery pack size.
Yes, that is my point: the new Roadster will do the same as the S/X: the front motor will be geared differently than the rear motor (or motors, in the case of the Roadster).The Roadster can do the same although I have a hard time to understand that logic. How can you make it to work like two gears when you need to turn front and rear wheels at the same time? Either way the Roadster will also have low gear ratio and lots of torque to those motors. That's how you can achieve 60% higher top speed without having to have a trasmission.
Yes, that is my point: the new Roadster will do the same as the S/X: the front motor will be geared differently than the rear motor (or motors, in the case of the Roadster).
So there is one gear ratio for the rear wheels, and a second and different gear ratio for the front wheels. Two gears, but on different axels.
The front wheel gear ratio is higher and works more efficiently at higher speeds.
We are saying the same thing, in different ways.
Ok but even the S/X have heating problems with sustained high speed - you can't drive the X at 130mph+ for long, never mind 250. The heat buildup and the battery heat will still be major issues at these speeds and that's why I'm convinced there will be a gearbox to bring down the revs and the heat. .
Doesn't have to be a 7/8 speed job - just a couple of gears to drop the rpm down as the speed get high.
There is going to be plenty of torque at the transmission to maintain performance even with a couple of gears.
That's not true. S/X do not have problem cruising at 130+ mph. The only time there is heating problem is driving on race track where you need to constantly cycling between maximum power and maximum regen/brake. That the Roadster has 250 mph top speed is also a good indication it will not have an issue with autobahn speed cruising...
Even just another gear is best to be avoided. Tesla has learned the lesson from the original Roadster. No transmission could handle that huge torque even when it was nothing compares to new Roadster's 10,000 Nm torque. What's wrong with just using one gear with lower gear ratio when you got enough torque to spare?
Definitely not an ICE killer if they can't run hard for at least 20 min on a track. I don't think they'll let that slip, though it could be a pricey option.