Tesla Roadster pictures and news

[TinmanMS6]

Considering its performance capabilities, I'd have no problem dropping some lottery winnings on one.

One thing that puzzles me about the transmission issue. How can a one-speed transmission possibly extract more torque from the motor than a 2-speed? I thought the purpose of having multiple cogs is to ensure you have power down low and speed up top. Amazing that they're getting both from one cog.

It's an electric motor. It's got the same torque from 1 rpm to 10,000 rpm. Doesn't matter.

I AM confused how they got more range AND better acceleration, unless the tranny is just more efficient in general.

 

[Koenig]

To be honest I have no idea how that would work, I think it has something to do with the electric drivetrain and having one long gear? Kind of like people who put powerglides in their mustangs? Hell if I know.... oh and I was referring to the if I had 100k like if i won 100k from the lotto or had an extra 100k, if i won the millions from the lotto I'd buy one hands down.

[edit]
Never mind, I see that Tinman DID state it has to do with the electric motor, I too am curious how it's more efficient and more power though, if all they changed was the gear, and didnt touch the engine itself

 

[NCZ13]

i think it has to do with electricity is instant power, while with an internal combustion engine, it has to rev to get power.

think of it like flipping a switch to turn on a light.

 

[magnumP5]

i think it has to do with electricity is instant power, while with an internal combustion engine, it has to rev to get power.

think of it like flipping a switch to turn on a light.

Yep, electric motors have instantaneous and constant torque but it still seems they should have more than one gear. I mean, wouldn't a battery burn out more quickly running at a constant 5000 RPM as opposed to a constant 2500 RPM? Maybe they considered this and determined the drivetrain loos to be too much?

 

[TinmanMS6]

Yep, electric motors have instantaneous and constant torque but it still seems they should have more than one gear. I mean, wouldn't a battery burn out more quickly running at a constant 5000 RPM as opposed to a constant 2500 RPM? Maybe they considered this and determined the drivetrain loos to be too much?

I'm not sure. The original plan was to have a 2-speed gearbox. I haven't seen any indication other than supplier issues that led to the 1-speed. I thought after the issues were sorted out, the final drivetrain was going to have 2 gears.

 

[Koenig]

MAYBE........ somehow......... the computer fuctions are so efficient that when the PCM reads you doing a constant speed (lets say 40 mph) it drops "rpms" down to maintain the efficiency and long mileage ?

 

[TinmanMS6]

MAYBE........ somehow......... the computer fuctions are so efficient that when the PCM reads you doing a constant speed (lets say 40 mph) it drops "rpms" down to maintain the efficiency and long mileage ?

Not gonna happen. With one gear, RPM:engine speed is a constant.

 

[Koenig]

hell if I know, I don't know anything about electric engines, lol. Still it does make you wonder HOW they're getting better mileage with only 1 gear over 2, doesn't it?

 

[stdntDrvr]

cvt?

 

[HondaNoMore]

i think it may have something to do with the fact that electric engines put out HUGE amounts of torque as soon as they're turned on. so you could essentially have a car with ONLY a 5th gear because the engine would have the power to turn the wheels.

 

[lasermp5]

ok, so when does the engine audio soundtrack option become available?