Electric cars.

Cars contain absolutely no thermal insulation, because engines have masses of surplus heat. Once heating the car is draining energy away, then a layer of insulation be fitted to the inner side of the panels.

And snide comments they were.

Reply to
Doctor Drivel
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Our resident snot is coming out with the snides again.now.

Reply to
Doctor Drivel

"nightjar .uk.com>"

Moist people rely on the powers that be to determine the technology we use. They actually do care, but think it is not there because of legitimate reasons. In really that is not the case.

Reply to
Doctor Drivel

What is the cost of the battery replacement? What is the environmental impact of replacing these batteries?

With regard to crashes - the rescue services have problems with hyrbid vehicles as often very high current cables are run through the bodywork, making cutting people out very difficult, as they cannot just cut anywhere as they currently can.

D
Reply to
David Hearn

New batteries are made of plastic. They also last a long time.

Then they just disable the battery by cutting the cable.

Reply to
Doctor Drivel

Even on an expensive sports car where they go to all sorts of lengths to save weight? And then there's the problem that many of these 'new' batteries simply don't work at low temperatures. Fine in California, but not in whole chunks of the rest of the world...

There are plenty of newer expensive cars making much use of aluminium etc. Even Jaguar. ;-) They've been somewhat of a pioneer in this. The snag is it makes repair methods extremely expensive which in turn will push up insurance premiums.

Reply to
Dave Plowman (News)

I don't think yiou apprecaute how teh car manufacturing business works Dave.

It is not hallowed ground of hitech development

It is seedy men in suits in te marketing and accounts departments.

Every component is costed and every component has its function.

Cost benefit analysis to save e.g. a 30lb in battery weight at the expense of making te battery not a 70 quid item that can be sourced anywhere, but a

700 quid item that has to be sourced from teh manufacture, is not as advantagous as e.g. replacing all the bodywork with aluminium. And saving half a ton...

The world is full of better mousetraps, but the auto industry is not going to tool up to produce them if it means tearing down a whole plant and re-writing every manual.

Its teh same in any volume situation. I beleive fir example that no LCD manufacturer has ye been able to amortise their profits on LCDs against te costs of tehe producxtion line: If a better technology than LCD were to come along, those boys would lose their investments in LCD plant. The best they can hope for is they can spit them out cheaper than the new technology for long enough to reoup the investment.

I know. Ive seen them.

All I am syaing is that e.g. jaguar built D types out of aluminium in te

50's. Its taken them 50 years to get it in to prodution...Not becasue it wasn't possible, or better, but because steel was CHEAP and GOOD ENOUGH

I cannot stres this enough. I have been a practicing design engineer my whole working life, and that pharse is engraved on my heart.

You A:LWAYS pick what is CHEAP and GOOD ENOUGH until the specs change eough so that its no lonegr GOOD ENOUGH.

Fuels costs now dictate that Jaguar needs to drop its vehicle weights to maintian its other qualities.

Jaguar also uses double wisbone front suspension on the big models. Always have, because its necessary to get ride and handling qualities associated with the marque.

Ford has used Mc Phersons for years, because they are CHEAP and GOOD ENOUGH. Not because they are BEST.

In terms of car starters, lead acid are CHEAP and GOOD ENOUGH

In terms of a decent propulsion system, they are CHEAP but NOT GOOD ENOUGH.

LIPOS are EXPENSIVE but GOOD ENOUGH.

Got it yet?

Reply to
The Natural Philosopher

Most people don';t care anything about te car they drive.

I was referring implicitly to car manufacturers, whose job IS to care about producing cars that people will buy.

And to those amongst us who do view the current use of fossil fuel with alarm, nit just because og global warmnming, but balso because of uncertainty of supply.

Reply to
The Natural Philosopher

At the moment, vast

Not vast. FAR nicer than batteries with lead or cadmium in them.

The main components of li-ion batteries are aluminium and carbon electrodes, and a lithium salt. Lithium salts comprise a huge amount of the earths crust and ecosystem, and are stable and inert. Calcium carbonate, soueum carbonate, lithium carbonate. Not exactly a set of words to isnpire panic in the eco-geeks are they?

Ther eare some organic electiolytes in their as well. Nothing too exciting.

That is certainly an issue.

I have considerd that, and think that teh wy to go is a modular power pack, with every module having some electronics on it to isolarte it..and probably carsh sensors on each one that essentially make the thing dead outside of its internals.

.Ive used tehse cells extensivley, and they CAN go up on flames. The electrolytes fir ukltra high discharge are fairly flammable.

Thigs get better when a somewhat lower discharge rate cell is specified. These are not so explosive.

Les than petrol perhaps.

You cannot cut through a full tank of petrol either...

Reply to
The Natural Philosopher

Of course Richard hasn't. Just read what he writes.

Reply to
Doctor Drivel

I'm not Lord Hall. I'd like air conditioning, but in one of your souped up milk floats its not really a practical proposition is it?

Reply to
Matt

I thnk you will find that from steel is extremely cheap to process compared to aluminium.

Reply to
Matt

The point is that it is not good enough.

Reply to
Doctor Drivel

Lord Hall, the snotty one thinks so, and insulation can be added to the panels, with reflective glass. There you go, easy.

Reply to
Doctor Drivel

The output from a typical A/B class car heater is in the order of

5-10kW although that output is not going to be needed it is sometimes required for extended periods in winter conditions.
Reply to
Matt

You're talking s**te again. Haven't you noticed how much colder your little van is when you're doing the deliveries?

Reply to
Dave Plowman (News)

Is that as long as a tank of petrol? Or as long as the average IC engine? Or just a piece of string?

Reply to
Dave Plowman (News)

So you can rule out electric cars?

Reply to
Dave Plowman (News)

And to warm up the car quickly on a cold day. 500 watts would take longer than most journeys.

Reply to
Dave Plowman (News)

The full output is only required for a short time. Even in - 5C temps, I always have to turn a car heater down.

Reply to
Doctor Drivel

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