Diesel - seriously thinking of giving up cycling

Samuel D
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Re: Diesel - seriously thinking of giving up cycling

Post by Samuel D »

pwa wrote:Actually, I had already wondered why the batteries aren't more easily swapped, like a cartridge system. Probably because they are too voluminous and have to be squeezed into inaccessible places to stop the vehicle being too big.

That is true and it applies to lots of things (it’s the main reason that phones, laptop computers, etc., no longer have user-swappable batteries).

Car batteries also need elaborate cooling systems that add to the complexity of making them removable.

But the main thing is they weigh hundreds of kilograms. You’d need a forklift to move them anywhere. Keep in mind that people drive their cars to the supermarket to avoid carrying a few grocery bags farther than the length of their cemented-over front garden. They’re not going to volunteer to carry a 250 kg battery indoors to charge every day, even if the battery was somehow divided into 25 ten-kilogram lumps.

However, if the industry managed to organise itself to physically transport vast volumes of petrol without contamination into millions of tanks distributed across the country, sending electricity over a largely existent network is easy by comparison.

reohn2 wrote:All that said the problem which Cunobelin hi-lighted up thread isn't only the air pollution of ice powered vehicles but the physicality of so many cars,any cars,either on the roads or parked up,and a much better way forward is public transport and smaller vehicles.
The problem also for government is revenue,it rakes a LOT of money in from travel by private vehicles,and like Vorpal mentions up thread or on another similar thread,we simply have to begin to look at an alternative means of transport before we either all choke(the health issues are well known) or nothing hardly moves by sheer volume of traffic,which already is very inefficient especially at peak travel times or when there's a crash on any given motorway.
These are problems successive UK government's have dragged their feet over since the building of the first motorways,building more and more roads isn't the answer,the country needs a new outlook to it's whole transport needs IMO.

I read the BBC article mentioned earlier and saw several quotes by the Department for Transport offering no hope except new roads as quickly as the budget allows.

Think about that. When offered the chance to talk to the BBC, i.e. a huge public audience, this was apparently the full extent of the DfT’s vision to fix congestion. Rail, bus, cycling, car-sharing, tolls, or anything innovative were not even given lip service. Just the failed and deeply stupid policy of building as many roads as possible, as quickly as possible, while blaming a finite budget for congestion that any economist will tell you will always be there with this approach.

As far as I can tell, the DfT offered these quotes without so much as a hint of irony. Does this fill you with hope?

This is because big political projects are seen as old-fashioned or even dangerous in the UK, and this idealistic dogma causes a lot of pragmatic harm. These are national problems (in fact global problems) that need vision, courageous leadership that inspires people, and joined-up thinking to solve. Instead what we get are the worst newspapers setting the tone of thought (the ubiquitous pro-car, anti-change thinking), unethical for-profit companies (Silicon Valley, car companies) dictating which technologies get investment (obviously the only ones that get money are those the market rewards in the short term, e.g. Uber; problems that need a chicken and egg at once are laughed out of the boardroom), and fragmented policies that pitch fiefdoms against each other and have no hope of effecting sweeping change.

thirdcrank wrote:I think it's futile to look for any logic in car ownership and use, now or in the future. It's irrational and I'll put my hand up here.

I think that is undeniable at this stage. Almost everything about car use today is absurd. The thinker Ivan Illich used a striking example in his ‘Counterproductivity’ concept:

“The main notion of Ivan Illich is the concept of counterproductivity: when institutions of modern industrial society impede their purported aims. For example, Ivan Illich calculated that, in 1970s America, if you add the time spent to work to earn the money to buy a car, the time spent in the car (including traffic jams), the time spent in the health care industry because of a car crash, the time spent in the oil industry to fuel cars...etc., and you divide the number of kilometres traveled per year by that, you obtain the following calculation: 10,000 km per year per person divided by 1,600 hours per year per American equals 6 km per hour, the real speed of a car.”

And it has got a lot more absurd since the seventies …
Cyril Haearn
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Re: Diesel - seriously thinking of giving up cycling

Post by Cyril Haearn »

I thought electric vehicles were simple!
How are the batteries (and the motors?) cooled?
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reohn2
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Re: Diesel - seriously thinking of giving up cycling

Post by reohn2 »

SamualD
Spot on,I couldn't agree more and thing that's stands in the way of progress is monetary profit for multi national companies who control the purse strings of far right political parties and the the media.with these companies profit is always counter productive.
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reohn2
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Re: Diesel - seriously thinking of giving up cycling

Post by reohn2 »

Cyril Haearn wrote:I thought electric vehicles were simple!
How are the batteries (and the motors?) cooled?

The same way ice powered vehicles,fans and efficient air ducting when on the move
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pwa
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Re: Diesel - seriously thinking of giving up cycling

Post by pwa »

The only simple vehicles are cycles, and some of them aren't so simple any more.
Cyril Haearn
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Re: Diesel - seriously thinking of giving up cycling

Post by Cyril Haearn »

reohn2 wrote:
Cyril Haearn wrote:I thought electric vehicles were simple!
How are the batteries (and the motors?) cooled?

The same way ice powered vehicles,fans and efficient air ducting when on the move

Watercooled like normal cars, or just air? I think electric buses are silent when not moving
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kwackers
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Re: Diesel - seriously thinking of giving up cycling

Post by kwackers »

Cyril Haearn wrote:Watercooled like normal cars, or just air? I think electric buses are silent when not moving

Liquid cooling is the common thing these days.

The issue with electric cars is folk won't buy them if the battery only lasts a couple of years so they go to extraordinary lengths to make sure the batteries last.
This includes cooling (or even heating) and proper cell balancing chargers that never fully charge or discharge the cells. Because of this the batteries last much longer than similar cells used in other consumer devices.
When not being used the cooling system doesn't run, in the main it's needed when charging, particularly fast charging or under 'heavy' driving.

The "good" news is it's nowhere near as complex as an IC cooling system since it has a lot less energy to dump and so doesn't need the flow and the large efficient radiator systems.
Samuel D
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Re: Diesel - seriously thinking of giving up cycling

Post by Samuel D »

Cyril Haearn wrote:
reohn2 wrote:
Cyril Haearn wrote:I thought electric vehicles were simple!
How are the batteries (and the motors?) cooled?

The same way ice powered vehicles,fans and efficient air ducting when on the move

Watercooled like normal cars, or just air? I think electric buses are silent when not moving


Water glycol cooling is common (e.g. Tesla) although BMW, for example, uses a refrigerant. Some batteries have cells that are flooded internally with a dielectric oil that is then passed through a heat exchanger.

Eventually all of this is air cooling but not in the way that a single-cylinder motorcycle might be cooled.

It gets worse: li-ion batteries also need to be heated! They cannot charge at low temperatures, nor do they deliver their full charge at low temperatures.

No electric bus that I have encountered, and they are common in Paris, has been silent when stationary. Of course they are much quieter than an idling ICE.
reohn2
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Re: Diesel - seriously thinking of giving up cycling

Post by reohn2 »

pwa wrote:The only simple vehicles are cycles, and some of them aren't so simple any more.

Though in fairness bicycles can be as simple or as complicated as the owner wishes.
The problem is selling unnecessarily complicated bikes to uncomplicated people :wink:
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MartinC
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Re: Diesel - seriously thinking of giving up cycling

Post by MartinC »

Unfortunately this thread is a 55 page squabble about the placement of deckchairs on the Titanic.

Globally we have a problem with the pollution (in the widest sense - greenhouse gases, congestion, danger, social impact) from motor vehicles. All motor vehicles cause this including electric and hydrogen powered vehicles - they just displace the greenhouse gas production from the point of use to the point of generation and don't address any of the other issues.

In parts of the UK (big cities) we have particular problems because of our (stupid and unnecessary) choice to use cars for far too many journeys. One of these problems is air quality. Our European neighbours don't suffer to anywhere like the same extent because they've made more sensible choices. So the solution is fairly clear - reduce our unnecessary dependence on the car. If a short term palliative is required then it's a draconian reduction in the volume of traffic by rationing. All vehicles produce particulates and all ICE vehicles produce NOx. As petrol engine technology increasingly adopts diesel technology to reduce CO2 emissions (because this is a bigger problem for the rest of the world) the difference between the two diminishes. Attempting to solve the problem by shifting the private motorist from petrol to diesel will be ineffective and is a distraction from solving the problem. Unfortunately it appeals to those who prefer finding someone (else) to blame rather than facing up to the problem they're causing.

I'm 66 years old. In my lifetime what I've seen is:

In the 60's we realised that all this traffic was a problem an we were going to solve it by building motorways and by-passes

This didn't work and in the 70's the oil crisis made us realise that the real problem was the profligate fuel consumption of the cars we were using so we set about improving this.

This didn't work and in the 80's we realised that the real problem was the lead in petrol so we made a big fuss and made sure we had unleaded petrol.

This didn't work and in the 90's we realised that the real problem was all the unburnt hydrocarbons in the exhausts that were the problem and that making every car have a catalytic converter was the answer. So we did it.

This didn't work and in the 00's we realised that the real problem was all the CO2 emissions and we needed to pick up the work we'd done in the 70's to improve fuel consumption and that diesel was a way to do this.

This didn't work and in the 10's we realised that the real problem was ICE's and cars and that getting electric autonomous vehicles to replace the private car might be the way to go. Except in the UK where we decided that most important problem was air quality in London and we needed to undo the work we'd done previously on CO2 emissions to put this right

This didn't work....................
Ben@Forest
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Re: Diesel - seriously thinking of giving up cycling

Post by Ben@Forest »

MartinC wrote:Unfortunately this thread is a 55 page squabble about the placement of deckchairs on the Titanic.

Globally we have a problem with the pollution (in the widest sense - greenhouse gases, congestion, danger, social impact) from motor vehicles. All motor vehicles cause this including electric and hydrogen powered vehicles - they just displace the greenhouse gas production from the point of use to the point of generation and don't address any of the other issues.

In parts of the UK (big cities) we have particular problems because of our (stupid and unnecessary) choice to use cars for far too many journeys. One of these problems is air quality. Our European neighbours don't suffer to anywhere like the same extent because they've made more sensible choices...


Is this true? In the EU and according to Eurostat the country with the highest level of car ownership per capita is Luxembourg. Other countries with higher motorisation rates than the UK include Germany, Austria, Italy, Malta, the Netherlands, Sweden, Spain, France, Finland and Cyprus.

States which have more diesel than petrol passenger cars are Belgium, Spain, France, Latvia, Lithuania, Luxembourg, Austria and Portugal - but not the UK.

States which have the highest levels of old (and therefore more polluting) passenger cars are Poland, Estonia, Latvia and Finland.

http://ec.europa.eu/eurostat/statistics-explained/index.php/Passenger_cars_in_the_EU
Mark R
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Re: Diesel - seriously thinking of giving up cycling

Post by Mark R »

Unfortunately this thread is a 55 page squabble about the placement of deckchairs on the Titanic.


Not really. More specifically about the way diesel vehicles have utterly trashed roadside air quality.

Lets say the structural problems of too many cars and too much driving actually would start to get tackled.......let's say for arguments sake we could achieve a 33% reduction in car use over six the next six months (without focusing on fuel type)...............this would be massively ambitious right?, but would it massively improve roadside air quality?

Quite simply - No it would not.

Why? Because there would still be high numbers of grossly polluting diesel vehicles in use

What if on the other hand, that 33% overall reduction focused on removing the worst polluters - e.g. diesel vehicles?

Would this make a big difference to roadside air quality? Too right it would!
reohn2
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Re: Diesel - seriously thinking of giving up cycling

Post by reohn2 »

Mark R wrote:
Unfortunately this thread is a 55 page squabble about the placement of deckchairs on the Titanic.


Not really. More specifically about the way diesel vehicles have utterly trashed roadside air quality.

Lets say the structural problems of too many cars and too much driving actually would start to get tackled.......let's say for arguments sake we could achieve a 33% reduction in car use over six the next six months (without focusing on fuel type)...............this would be massively ambitious right?, but would it massively improve roadside air quality?

Quite simply - No it would not.

Why? Because there would still be high numbers of grossly polluting diesel vehicles in use

What if on the other hand, that 33% overall reduction focused on removing the worst polluters - e.g. diesel vehicles?

Would this make a big difference to roadside air quality? Too right it would!

But the issue is fuel burnt not just vehicle reduction(though that would help)what about the huge HGVs returning probably 6 to 8mpg are they not per vehicle far more polluting?
Last edited by reohn2 on 13 Feb 2018, 3:34pm, edited 1 time in total.
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AlaninWales
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Re: Diesel - seriously thinking of giving up cycling

Post by AlaninWales »

Mark R wrote:
Unfortunately this thread is a 55 page squabble about the placement of deckchairs on the Titanic.


Not really. More specifically about the way diesel vehicles have utterly trashed roadside air quality.

Lets say the structural problems of too many cars and too much driving actually would start to get tackled.......let's say for arguments sake we could achieve a 33% reduction in car use over six the next six months (without focusing on fuel type)...............this would be massively ambitious right?, but would it massively improve roadside air quality?

Quite simply - No it would not.

Why? Because there would still be high numbers of grossly polluting diesel vehicles in use

What if on the other hand, that 33% overall reduction focused on removing the worst polluters - e.g. diesel vehicles?

Would this make a big difference to roadside air quality? Too right it would!

Yes really: Your example is just arguing over whether moving the deckchairs to the other side might get them out of the ice blown from the 'berg. Vehicle pollution is about far more than local air quality.
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Re: Diesel - seriously thinking of giving up cycling

Post by Vorpal »

https://vastgoedbs.nl/nieuws/50-minder- ... amsterdam/ is an article about reducing motor traffic in Amsterdam by 50%. This is their current target, and they have policy and strategy in place to meet it.

Here is the Google Translate version:
https://translate.google.com/translate? ... edit-text=

They began by taking a survey of traffic bottlenecks. But an important aspect is how they think about it. Here is a translated excerpt...
The mapping of these bottlenecks seems to be a first step towards a vision, although not guided by a political starting point. It is important that Amsterdam remains accessible for, in order of importance: pedestrians, cyclists, public transport and for people who really need to enter the city by car. The rest has to be helped out of the car, if necessary with "soft coercion".


Would you rather get people to switch from diesel to petrol? Or get them to get out of the car and use other transport methods?
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