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Politics : Politics of Energy -- Ignore unavailable to you. Want to Upgrade?


To: Eric who wrote (67776)1/7/2016 8:25:01 PM
From: Maurice Winn  Read Replies (1) | Respond to of 86350
 
Eric, you insist on comparing the Tesla to the BMW. I'm interested in the Tesla Supercharger half hour waste of time, space and money, compared with the amazing 7SSS [tm] 7 second pit stop.

Yes, the housing for the battery should serve a dual function of being part of the car's structure. That's obvious.

But you seem to think that adding 400 kilograms of battery to my swishy little 7SSS [tm] car wouldn't require more structure to support that 400 kilograms. Since 400 kilograms is a large portion of the 800 kg that a 7SSS [tm] car might weigh, it's obvious that the car would have to be designed stronger to cart that big extra weight around.

The suspension would need to be stronger. The wheels stronger. The tyres bigger. The battery bigger to handle the bigger battery. The motors more powerful. The body stronger.

When a vehicle is carrying a heavier load, such as a bigger battery, the vehicle has to be made stronger and more powerful.

The S might run circles around the BMW you mentioned, but the S will be left for dead against my 7SSS [tm] racer, even without the extra half hour you would need to spend in the supercharger pit stop while my 7 second pit stops cause little delay.

With a much cheaper car and much less capital cost, the 7SSS [tm] is obviously the way to go. Especially when the S [for sad] owners sit for half an hour in the waiting room watching hundreds of 7SSS battery swap cars swooping in and out in several seconds, paying almost nothing for their electricity and even making money if they deliver full batteries from their photovoltaic surplus from home to the 7SSS station.

Regarding your guess on what size battery would be needed to optimize ESR, battery life, capital cost and whatnot, maybe my 70kg guess is a bit light. But certainly 200 kg would be heaps and I suspect that 100kg would do for a city car.

The 540 kg you have for the Tesla is essential to achieve range.

Stop living in the past Eric. Piston engine BMWs are so last century. Dirty great batteries with an hour of "Supercharger" recharge delay are absurd. Electric cars with battery swaps in 7 second pit stops is the way to go. Petrol-powered fuel cells would be nice but that's in the too hard basket.

It's amusing and surprising that you are unable to understand the idea of a 7 second pit stop. But people bound in checklist mentality have trouble thinking outside the box. I have seen a LOT of such lack of thinking in decades in industry [and government].

Mqurice