Forum Discussion
- If electric vehicles don't go over with the public I can see GM being in financial trouble, my opinion only.
time2roll wrote:
Even towing the max you will be over the speed limit in 10 seconds. The point is you will not use that much power continuously.
Climbing a steep grade, you can use a heck of a lot of power for a much longer period of time.
Even if it's only drawing 50% of max, that's still a lot of amps if they don't derate it after 10 sec.wilber1 wrote:
Even towing the max you will be over the speed limit in 10 seconds. The point is you will not use that much power continuously.time2roll wrote:
wilber1 wrote:
You will exceed the speed limit in 5 seconds.
For how long?
Pretty useless in the real world.
Then what? How long will you be able to draw 1000 amps from a battery dragging a trailer up a mountain? This is a TV forum after all.
I will wait for the TFL video on how Hummer performs towing.- As the Missouri state motto, Show me. Otherwise without any real world towing data it's another useless vehicle.
time2roll wrote:
wilber1 wrote:
You will exceed the speed limit in 5 seconds.
For how long?
Pretty useless in the real world.
Then what? How long will you be able to draw 1000 amps from a battery dragging a trailer up a mountain? This is a TV forum after all.wilber1 wrote:
You will exceed the speed limit in 5 seconds.
For how long?wilber1 wrote:
For how long?
Likely for just a few seconds. The ridiculously high hp ratings are nothing but gimmicky bragging specs. I read a test on the Tesla Model S. In "Ludicrous" mode it would put down a blistering quarter-mile time, in the 11 second range IIRC. It took a 45 minute warmup for the battery, and after several 1/4 mile runs the car derated to about a high 15 second 1/4 time. Not bad, but with a $600 computer reflash my lowly turbo gas VW will run high 14s all day long.
I suspect the 1000 hp rating of the GM Hummer EV will be similar. First of all, with that kind of horsepower you will be doing triple digit speeds in a few seconds at full power. And assuming the Hummer has the 200KwH battery promised, that 1000 hp would completely deplete the battery in just 20 minutes, not factoring in losses for heat, etc. Having said that, the 200 KwH could theroretically produce 100 hp for close to 3 hours, making it an EV that could tow a decent size trailer with an acceptable range.RCMAN46 wrote:
wilber1 wrote:
1 HP = 750 watts. 1000 HP = 750,000 watts. What what will be the operating voltage of this thing? At 800V it will still be drawing almost 1000 amps. The wiring will weigh a ton. Will it need a trailer to carry the batteries?
A Tesla model S operates at 375 volts 416 hp which is 310 kw.
That calculates to 827 amps.
For how long?wilber1 wrote:
1 HP = 750 watts. 1000 HP = 750,000 watts. What what will be the operating voltage of this thing? At 800V it will still be drawing almost 1000 amps. The wiring will weigh a ton. Will it need a trailer to carry the batteries?
A Tesla model S operates at 375 volts 416 hp which is 310 kw.
That calculates to 827 amps.- 1 HP = 750 watts. 1000 HP = 750,000 watts. What what will be the operating voltage of this thing? At 800V it will still be drawing almost 1000 amps. The wiring will weigh a ton. Will it need a trailer to carry the batteries?
