Safe Speed Forums

Interesting to note that from 2012 my land rover will not be allowed into central London....
I guess I'll just have to live with it...

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The world runs on oil, period. No other substance can compete when it comes to energy density, flexibility, ease of handling, ease of transportation. If oil didn’t exist we would have to invent it.”

56 years after it was decided it was needed, the Bedford Bypass is nearing completion. The last single carriageway length of it.We have the most photogenic mayor though, always being photographed doing nothing

How are you going to pick the kids up from school in Chelsea then? You will just have to get a newer 4x4 for town driving. I for one will not feel at home if I don't have idiots in 4x4s driving them as if they were a Smart.

I doubt that anyone picks kids up in a smart....no street-cred.
Anyway, with an answer=the=question check it shows as a not-allowed vehicle, but a reg check says it is ok to pollute the London air after 2012....until the latest
lez regs arrive....probably to only allow electric vehicles.
My town is going to close the highstreet to traffic....which means they will be routed through residential areas....good move.

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The world runs on oil, period. No other substance can compete when it comes to energy density, flexibility, ease of handling, ease of transportation. If oil didn’t exist we would have to invent it.”

56 years after it was decided it was needed, the Bedford Bypass is nearing completion. The last single carriageway length of it.We have the most photogenic mayor though, always being photographed doing nothing

You need avehicle pulled by Bullocks - putting out pure anti social gases ( through their asses) and creating mounds of polluting fecies per mile . As this animal is not a dog ,no penalties apply

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lets bring sanity back to speed limits.
Drivers are like donkeys -they respond best to a carrot, not a stick .Road safety experts are like Asses - best kept covered up ,or sat on

Actually its the idiots in Smarts who drive around as if they were 4X4's that are more of a problem, at least round here last winter!

They mostly ended up abandoned in the middle of the road, Thus blocking it for other (more suitable ) vehicles or upsidedown in the ditch!

I wonder how well some of these new all electric cars would perform in sub zero conditions??

(How does it go? the effective capacity of a battery halves for every 10 degree drop in temp from its design rating? (25C??) And how do you stop the occupents from freezing and how do you keep the windows clear?? )

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"The road to a police state is paved with public safety legislation"

That figure is for Lead Acid. Lithium ion lose about 20% capacity between 25deg and freezing. But a conventional water cooled i-c engined car can't operate below freezing because the water will freeze.

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When I see an adult on a bicycle, I do not despair for the future of the human race. H.G. Wells
When I see a youth in a motor car I do d.c.brown

Eh?

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"Show me someone who says that they have never exceeded a speed limit, and I'll show you a liar, or a menace." (Austin Williams - Director, Transport Research Group)

Any views expressed in this post are personal opinions and may not represent the views of Safe Speed

Are you suggesting that the driver/passangers should drink antifreeze before going out on a cold winters day??

In all seriousness, keeping thje interior warm and windows defrosted is already becoming a bit of a problem with the more recent high efficiency diesel engines. Additional electrical (or even diesel fueled) water heaters are increacingly common in the heating loop since the engines do not always produce enough "Waste" heat to keep the water up to temp on a cold day!

(If you think about it, this also puts a "Limiting value" on the ultimate MPG that it might be possible to achieve that is a lot less than what one might think is possible on paper...)

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"The road to a police state is paved with public safety legislation"

I am pointing out that the "obvious" conclusion isn't always correct.
A water-cooled engine can operate at sub-zero temperatures if you add anti-freeze to the water.
A battery operated car can operate at sub-zero temperatures if you insulate and heat the battery.

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When I see an adult on a bicycle, I do not despair for the future of the human race. H.G. Wells
When I see a youth in a motor car I do d.c.brown

Nah. Austrian wine is rubbish.

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When I see an adult on a bicycle, I do not despair for the future of the human race. H.G. Wells
When I see a youth in a motor car I do d.c.brown

The electric vehicle batteries (mostly Li-ion of one chemistry or another these days) don't seem to mind OPERATING in temperatures well below zero, and generate their own heat once they're up and running. You (temporarily) loose some range though. However, CHARGING them at sub-zero temperatures seems to be more problematic. You can damage the cells doing that.

Heating and demisting can be achieved in a variety of ways. Some have diesel-fired cabin heaters (how green is that eh?!), others have nailed their environmental colours to the mast and have gone with electric heating. This does, of course, loose some range - a 5kW heater for an hour's trip will use up 5kWh, which is a pretty significant chunk of battery capacity. Demisting is covered by existing legal requirements and there is no dispensation for electric vehicles.

Adding anti-freeze doesn't result with the water being drained over time.

Heating the battery doesn't ... oops!

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Views expressed are personal opinions and are not necessarily shared by the Safe Speed campaign

The UK is not sunny california! Heating and demisting is needed for most of the year in the UK. My solution would be to keep it simple and incorperate a small electrical storage type heater into the vehicle which can both keep the battey warm and provide heating and demisting, The weight penelty neednt be excessive and it would likly be considerably cheaper than having a bigger battery!

The biggest problem EV's have is this nonsence about range. You dont actually need a range of much more than 20 miles as long as you have another more conventional vehicle to hand!

A Landcruiser Amazon and a g-wiz is a damn good combination and I would be happy to have it, (I already have the amazon ) we just need to get away from this nonsence "One size must fit all" attitude that holds back these new technologies by imposing excessive costs through attempting to achieve the impossible!

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"The road to a police state is paved with public safety legislation"