The lamb from heaven

Posted on February 2nd, 2014 in Driving Emotion by Julian Edgar

A warning: this has nothing to do with cars….

As some of you will know, I live on the edge of a tiny hamlet in country New South Wales, about 80km north of Canberra. It’s a pretty relaxed place that I like a great deal. Most people in the town with young children have one or two acres, and pet sheep are common. In fact, off hand, I can think of five families that each own a pet sheep. Good for keeping down the grass and, if reared from a lamb, sheep are surprisingly sociable and interactive animals.

Our sheep – Victor – came to us in a cardboard carton, a tiny, weak little lamb that had been abandoned by his mother.

Victor was fed milk replacement, and sheep pellets, and then lucerne, and then grass from the yard, and subsequently grew and grew. He was initially free to roam our block, but then he started to butt house windows and eat flowers and be a pest. So he’s now constrained to about 250 square metres – plenty of space for him… but not enough for another sheep.

So when another lamb arrived, it was never going to be kept. But boy, was I ever tempted! Why? Because I think it might be one of the luckiest lambs alive….

It was a Sunday afternoon, and my son, Alexander (aged 9) was playing in the yard. The front gate was shut, and he was using a rope to pull a skateboard up and down the dirt driveway. He’d run up the driveway, towing the skateboard behind him, complete with an action figure taped to it. The skateboard would leap and jump behind him, until he reached the end of the driveway, bent to make some adjustments, and then pulled it in the other direction, heading back towards the road.

And then, as suddenly as it sounds, a tiny lamb appeared just inside the gate, wandering about forlornly.

The gate was shut; no car had appeared; and there are no flocks of sheep within 2 kilometres that currently have lambs so young. The time window in which it must have appeared, what with Alexander running back and forth, would have been 10 seconds maximum.

The lamb – it just literally appeared.

Alexander ran to the house and said, “There’s a lamb in our yard!” 

My wife Georgina caught the lamb (easy: it was quite weak and slow), and fed it some water and then milk.

But where on earth had it come from?

The lamb had a few injuries. Its nose and mouth were a little bloodied, but the most interesting injuries were on its back. There, still freshly bleeding, were four small cuts, each perhaps 10mm long. They were spaced in two parallel pairs, on the very upper surface of the lamb’s back.

A few days earlier, circling on the thermals they ride, Georgina had seen a pair of wedgetail eagles. These are very large birds, strong enough to pick up rabbits and carry them away.

And perhaps strong enough to carry a lamb…

Anecdotally, many people suggest that wedgetail eagles can scoop up live lambs, but an authoritative reference I have on these eagles says that this is in fact a fallacy – that lambs are carried by wedgetail eagles only when they are dead, and so not struggling or running prior to being caught.

But we can think of no other explanation that would account for the lamb’s incredible sudden appearance from thin air, and its pattern of injuries. Furthermore, Alexander found four little depressions in the bark chips close to where he first saw the lamb, spaced to match the lamb’s hooves.

Had a wedgetail eagle grabbed the lamb, carried it a minimum of several kilometres, then settled on the bark chips in our yard to eat it – only to be disturbed by Alexander running with the skateboard? If so, that tiny lamb had just had the ride of its life….

But despite its cuteness, and its extraordinary mode of arrival, we couldn’t keep it – and after making half a dozen phone calls, Georgina found someone in our town who wanted a new pet lawnmower.

Gosh, if only I’d looked at the window a few moments earlier and seen the lamb arrive, carried by an eagle. That would have been something to remember forever…

Four weeks in Germany

Posted on January 20th, 2014 in automotive history,AutoSpeed,BMW,classics,Driving Emotion,Opinion by Julian Edgar

So as I write this, I am just back from our four-week trip to Germany.

It was a trip made with the express intention of seeing as many fabulous technical, automotive and aeronautical sights as possible, and also seeing as many 1930s and 1940s historic sites as possible!

The trip was fascinating – and often rather surprising.

The revered Porsche museum is a self-indulgent wank, with history airbrushed and obfuscated to suit only Porsche and its created mystique.

The BMW museum is in the same mould: brush any commercial difficulties aside (the unsuccessful ETA engines? Never heard of them!) and just plonk cars into a space with almost zero context.

The Mercedes museum? Oh my gosh – what a stunner. Fabulous cars, lots of honesty, and lots of and lots of automotive history expressed in a cultural and technological context. The Mercedes museum is surely one of the best one-make car museums in the world – and boy, do they ever show BMW and Porsche how it should be done.

Another fantastic place to visit is the Sinsheim technic museum. It’s got cars (try some stuff like a Cord, lots of Bugattis, lots and lots of 1930s Mercedes, 1950s bubble cars, American cars of the 1960s – and on and on) and some aircraft (try a Concorde and Soviet-era Tupolev Tu-144) – and also  a whole bunch of military hardware.

Travelling as we did in winter, there’s barely a soul to be seen – so you can take your time, completely unhindered by others. It was so quiet that when looking at the outside military hardware at the Sinsheim museum, a friendly stray cat came up to visit!

Another absolute stunner is the Deutsches technical museum in Munich. I thought that the Science Museum we visited in London last year was good but the Deutsches is in another – even better – league. I defy anyone reading this to get through the content of the Deutsches technical museum in less than a full day. From the pile of Mercedes alloy V12 engine blocks in the section on metal casting, to the aeronautical display showing early aircraft wing sections as they were measured in contemporary wind tunnels, to the display on locks and keys, to the room full of machine tools of the 1800s and 1900s, to the full size stationary steam engines, the cutaway submarine (yep a real one) – it just went on and on and on.

And then when you’ve overloaded there, go to the specialised transport Deutsches museum, also in Munich….. that is also outstanding.

But we didn’t just go to museums. Going with my wife and 9-year-old son, we also visited the Lego Discovery centre in Berlin (pretty weak I thought), the Miniature Wonderland in Hamburg (the world’s largest model railway and quite fantastic), lots and lots of shops, went for  ferry ride on Lake Constance in the south – and also stayed at Zinnowitz on the Baltic Sea in the north.

Then there were the incredibly sobering Nazi-era concentration camps at Dachau and Mittelbau-Dora, the amazing architecture and feel of the Nuremberg Nazi party rally grounds – and a bunch of other stuff.

I’ll be covering a lot of it – with a huge number of pics – in a Germany Diary series we’ll be shortly running in AutoSpeed.

Hi Liam…

Posted on October 21st, 2013 in Driving Emotion,Opinion,pedal power by Julian Edgar

Hi Liam,

Thanks for your questions. I hope my answers help you in your Year 11 design and technology studies.

 

Is designing a hobby, a source of income, or both?

My designing is both a source of income and a hobby. I enjoy doing what I do: if I can make it both my work and a hobby, so much the better.

Initially, I started out doing things just as a hobby, but then I realised that by simply describing (in pics and text) what I had done, and selling it as a magazine article, it could pay me money as well.

 

How long have you been designing things for?

I think I probably have been designing real things since I was about your age. In Year 11 I got an electric drill and then an electric jigsaw, and started building speakers systems and solar heaters.  My designs were thought-through, and then sketched on paper, before I started building. So they were projects that were designed – not just built as I went along.

I can remember designing things earlier than that – say, in Year 8 – but I never then actually made them, so I don’t think that counts.

 

Which part of design gives you the most satisfaction?

That’s a really good question – one that I have not thought of before.

I think perhaps the thing that gives me the greatest satisfaction is designing and building something that lots of people say will not work, or is stupid, or is a waste of time – then finding that it works really well.

When I designed and built my first suspension trikes, everyone who knew anything about recumbent trikes said things like: “Why would you bother – trikes without suspension ride fine.” Now, about ten years later, I see plenty of mainstream trike blogs and sites reviewing commercial suspension trikes and saying how great they are!

It’s both frustrating and rewarding – frustrating when I come up with something I think is great, and then (eventually) rewarding when people recognise years later that what I said was great, was in fact great!

 

What kind of projects do you most enjoy working on?

I think I most enjoy projects that involve vehicles – things you can pedal or drive on the road. I reckon that being in control of a moving thing that you designed and built (or even just modified) is the very best.

I also have designed and built electronic projects, pneumatic projects, speaker systems, solar heaters – and many other things… but I reckon that vehicles beat them all by a lot.

 

What has you favourite design project been so far? And why?

My favourite project is usually the thing I am currently working on.

So today I designed and started to build a trailer for my tractor lawnmower. It uses pillow-block bearings for the axle, hubs I machined on a lathe, and a 25mm RHS square tube frame, MIG welded together.

I have to do my “real” job tomorrow, but later in the week I want to finish the trailer, installing a steel deck and hardwood side rails.

I am also currently working on turbocharging my hybrid Honda Insight, and it’s been fun coming up with a water/air intercooler and new airbox for the car. I also made my own machine to place a lip on the intercooler tubes, to stop the turbo boost hoses blowing off under boost.

But this time last year, I was all excited about designing and building twin 15-inch subwoofers to put under the floor of my lounge room!

It’s good to be excited about whatever you are designing and building.

 

What’s the process you go through during a design project?

Here are my steps:

1. What functionality does the design need to have – what does it have to do?

2. What have other people done to address the same needs?

3. What aspects of their designs can I use, and what aspects can I develop that will better suit my needs and building capabilities?

4. What aspects from similar designs, but in completely different design areas, can I use? (So for example, when designing a stiff but light structure – what aspects from aircraft, from yachts, from airships, from skateboards, from bicycles, from rockets can I incorporate in my project?)

5. Can I build my design with my skills, money and workshop equipment? If not, how can I change it?

6. Now it’s time for sketches – lots of them.

7. Build the thing.

 

What’s the process you go through when building it?

1. Follow sketches

2. Any design changes that I decide to implement during the build, I re-sketch and then consider very carefully before doing.

 

On average how long will a design project take? From the initial concept to a finished design.

A really big project, like my three recumbent suspension trikes, perhaps 9 months to a year for each of them. My turbocharging (and intercooling, and fitting programmable engine management, and fitting a MoTeC dash, and full tuning, and tweaking the electric control system, and fitting a new HV battery pack) to my Honda Insight I’d expect to take 9 – 12 months.

I am a slow worker and will make a part again if I am not happy with the first version.

 

What are your preferences or priorities in terms of things like: form, function, durability and build-ability?

Form: I don’t consider aesthetics (how pretty it looks) much at all. Good design has an elegance and beauty of its own.

Function: is critical – it must perform.

Durability: in the sort of things I design and build, I look at durability in two key areas. These are high quality bearing surfaces (eg use of ball bearings), and fatigue strength (over-engineering to stop fatigue failures).

Build-ability – very important – I have to be able to build the thing (or use others only very sparingly).

 

When starting a design project do you prefer to start with a clean sheet or start from what others have done?

I like starting with a clean sheet and only then looking at what others have done. Sometimes I learn a huge amount by looking at others have done – other times, I think my ideas are better.

But always consider first what you want to do and only then look at what others have done.

 

Do you use computer modelling when working on a design project? 

The only computer modelling I use is in the design of subwoofers – I don’t use any other computer aided design at all.  This is mostly because I am very old, but also because I seem to better develop my ideas by:

1. Sketching – drawing ideas as I am thinking them up.

2. Making small models – that show (through destruction testing) how strong they are, where any moving parts will hit each other, etc.

3. Making rough versions and seeing how good they are before building the proper one. That’s especially the case in electronic and pneumatic systems.

I think if I were starting now I would be particularly interested in getting good skills in CFD (computational fluid dynamics – how fluids like air pass over objects), and CAD – computer aided design, especially in the stressing of parts.

 

What have you found to be the critical elements in the design of a HPV to meet your particular goals/needs?

One critical element in designing a suspension HPV (Human Powered Vehicle) is to use the lightest approach to achieving the outcome that you want – and you should be striving for an outcome where the suspension natural frequency is about 1Hz (for an explanation, see http://www.autospeed.com/cms/article.html?&A=112279).

If the suspension is sufficiently soft to absorb bumps, you then need very effective anti-roll capabilities to stop excessive body roll on corners.

Another critical element is to optimise steering – this is because the rider gets most of their handling feedback through the steering response and behaviour. Optimising this includes Ackermann, caster and trail.

But to make it all really simple – the HPV should always behave as the rider expects. Actually achieving that is incredibly difficult.

 

How do you decide when a design is finished e.g. is the HPV project finished or just on the back burner until you can implement another set of ideas? 

I finish one HPV project and start another when I think that starting from scratch is a better way of pursuing the next set of ideas.

 

To finish, do you commercialise you designs in any other way than publishing them in articles? 

i.e.

o   Protect any intellectual property you develop?

o   Keep secret particular problems or solutions you have found?

o   Look at production of your design?

 

I have looked at doing all those things and have decided that it’s best for me if I just write (and photograph) my designs and run them in paying publications. I also always tell it like it really is – not trying to hide any problems or solutions.

Commercialising a new design requires lots of risk in terms of money, and the further ahead of the other competitors that the design is, the harder it is to get it accepted.

Regards,
Julian Edgar
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AutoSpeed in 2014

Posted on October 4th, 2013 in AutoSpeed,Driving Emotion,Hybrid Power by Julian Edgar

Well, it’s an exciting automotive time for me.

I’ve been working hard on a project – turbocharging my little Honda Insight – that’s going to result in a whole bunch of interesting DIY AutoSpeed stories in 2014.

Yes, even if you’ve no particular interest in turbo’ing a hybrid!

So what sort of stories then?

Well, first off the rank, I’ve bought a TIG welder and have been learning how to drive it. I must say that it’s been a very steep learning curve: despite having experience in both MIG and gas welding, TIG’ing aluminium is a dramatic step up. I’d expect some time in 2014 to write a story about learning how to TIG weld – in the mean time, I’ve done a story for AutoSpeed on making a welding trolley to hold the unit and its gas cylinder.

One of the things I’ve been welding is a water/air intercooler heat exchanger. The Honda will use the intercooler to maintain a constant inlet air temp (eg 35 degrees C ) – not just to cool the air when on boost. This is likely to require passing engine coolant through the heat exchanger following start-up on cold days, transitioning to working as a standalone heat sink, then in hot ambient conditions to working as a conventional cooler with pump and front-radiator. The aim is to achieve best fuel economy, as well as avoid detonation caused by high intake air temps.

I’ve also made a new airbox, taking an unusual approach that is easy to build and uses a widely available, paper filter element. The result flows well, is compact and can be adapted in size and configuration as required for the particular application.

To connect the turbo to the intercooler and then the throttle body I need new intake plumbing – and I’ve been making that as well. I chose to use mild steel mandrel bends – and I’ve made a simple tool to place a bead on the ends of the tubes to stop the hoses blowing off. We’ll be covering the tool, that uses a hydraulic press to power it, in a story in 2014.

Not yet made as I write this, but on the list of things to do, is a new exhaust system. I want to incorporate something I’ve long admired – a variable flow exhaust valve. I’ve got one sitting on the shelf (taken, from all things, a Ferrari rear muffler!) and I’d like to be able to integrate it near the rear of the car.

Driving the engine will be a MoTeC M400 – initially I’ll be controlling fuel, spark, EGR, VTEC changeover and turbo boost. Sitting in the same box near my desk as I type is also a MoTeC CDL3 dash – it will be displaying as many bits of information as I can configure into it.

I’d like to later integrate electronic throttle control – but one step at a time.

And what of the ‘hybridness’ of the car? Longer term, I’d like to use a new li-ion battery pack and controller, potentially over-rating the 10kW electric motor for short term bursts. But initially at least, the car will run as just a turbo three cylinder without the hybrid system operating.

My ultimate aim is to maintain the car’s  unbelievably good fuel economy and have up to 40 per cent more power.

On a different topic, over Christmas and New Year I expect to be in Germany for a month – as we did this year for the UK, I believe that will result in some very interesting tech stories.

2014 is AutoSpeed’s 16th year of publication – it looks like there will be plenty of interesting content!

The Falcon to die

Posted on May 28th, 2013 in Automotive News,Driving Emotion,Ford,Opinion by Julian Edgar

If you follow cars in Australia, I am sure that you have heard the news. Ford has decided to stop building cars here, and unless there is a radical change of mind, production of the Falcon will stop within a few years.

This has occurred primarily because of dwindling sales of the Falcon – a car that went from selling around 75,000 units per year in 2002 to about 12,000 in 2012.

That is a tragedy: a tragedy for the workers directly employed by Ford, and also for the workers of supply companies that will now likely go broke. It is also sad for the country as a whole: having the capability to design and manufacture as complex an item as a complete car is not to be sneezed at.

But it is also the outcome of a bunch of utterly stupid management and product planning decisions made by Ford itself. For all the talk of high wages, the value of the Australian dollar and the like, no one should refrain from looking hard at what Ford in Australia chose to spend their money on.

The FG Falcon, released in April 2008, was a car characterised by utterly misplaced priorities, to an extent that was staggering then and remains staggering in retrospect. In 2008, the downwards trend in Falcon sales had been in place for four years. People were moving from the Falcon to smaller cars – or, conversely, to large and multi-purpose four-wheel drives.  Social and engineering change in the world of cars was profound: the Prius had been on sale for nearly a decade; fuel prices were only going to keep on rising; and people were looking for flexibility in their cars – the ability to carry five people one day, and then carry big items home from the hardware store the next. All of this was obvious… but not to Ford.

The day after the FG Falcon was released, I wrote in this publication:

It’s very hard to believe that the Falcon will not go the way of the Mitsubishi 380 – and for much the same reasons. High quality engineering directed in completely the wrong direction, aiming at a target that started to move a decade ago and has now gone…

After driving the car we published these notes:

Feels very much like Mitsubishi 380 in that the FG is a car that with exception of some minor electronics, could have been released a decade ago – nothing special in performance/economy, interior space utilisation, interior design, styling (inside and out). Highly competent car but at the things (eg handling, long distance cruising, NVH) that are not a priority for most people.

A ‘nothing’ car in terms of progress. Feels like design priorities were set for what would work in mid Nineties – RWD handling, long distance Australian road travel, inoffensive (and unexciting) conventional styling inside and out. Needs – far better fuel economy option (eg diesel, LPG on downsized engine), much better interior design (literally zero progress made here!), better centre dash ergonomics.

My summary in a full road test of the car was:

With the exception of crash safety and the electronic stability control system, the FG Falcon reflects the design priorities of a different era. In short, Ford apparently believes balls-to-the-wall handling to be more important than fuel economy, and in-cabin styling to be more important than practicality. Simply, the money could have been much better spent.

New engine options – including possibly a diesel – are apparently coming, but as the car stands right now, it’s the epitome of a botched opportunity.

Of course, the diesel never came. Instead, we had that Ford choosing to sell the car with an engine range that included two high performance, thirsty engines – a V8 and turbo six.

One hi-po engine – sure. But two? What did they think this was, the 1980s?

And the issue with wasting internal resources like this is that those dollars could have been put into something else – like fitting a four cylinder. It took until 2012 to do that…

In a column written in December 2009, under the heading of ‘Making very bad product planning decisions’ I said:

The car that this year amazed me the most was the Ford FG Falcon.

The model that I would think sells the best – the XR6 – was incredibly off the pace in the things that matter to most purchasers. All I can say is: what on earth was Ford thinking when they set the priorities?

But to be honest, I could not – and still cannot – believe how bad the FG Falcon is…. and ‘bad’ in the context of what the car is supposed to achieve.

Why on earth did the company spend lots of money on a new front suspension design and steering when out on the road, pushing the car to anywhere near its very high limits is illegal? To put this another way, in virtually all road use, what was wrong with the previous model’s suspension?

That (rumoured) $100 million spent on the new front suspension could have been used to make the air conditioning actually work and improve interior packaging – both would have had far more positive impact on potential purchasers than getting better turn-in at 150 km/h…

And the fuel consumption!

Forget the official government test figures: at a measured 12.5 – 13.5 litres/100km in the city, there appears to be no real-world improvement in a decade. That is simply unforgiveable.

The Falcon angers and frustrates me. The decisions that Ford’s myopic product planners took, in the face of overwhelming worldwide evidence, has cost this country – and Ford – a lot of jobs and money.

At the time these words were being published, our comments section (which unfortunately is not currently visible) was full of people saying how wrong I was.

The automotive journalists in Australia – every darn one of them – said how great the car was. Other than AutoSpeed, not a single publication suggested that the car was utterly wrong for the time and would be a flop – probably sending Ford under in terms of manufacturing in this country. “FG Falcon stuns” read one media test headline. Stuns for what – its inept direction? No, the test didn’t actually say that…

In fact, I was so amazed by the lack of criticism of Ford’s approach with the FG that I wrote a bitterly ironic column with the sole focus being how stupid the decisions underpinning the FG were. I called the Falcon The Ideal Car for the Times.

So why did Ford chose to make the decisions it did?

We will probably never know…. those who set the direction are hardly likely to confess – let alone, try to justify what they did. And sure, Ford was working within tight limitations regarding money and resources – but that just made it even more important that those product planning and engineering decisions showed an understanding of a changing car buying market – not to mention societal change on a broader scale.

But I honestly feel more depressed about it all than triumphant. I am sad to see part of Australia’s engineering and industrial heritage disappear…and once it has gone, you can be certain it will never come back.

A poor way of looking at technological history

Posted on February 4th, 2013 in Driving Emotion,Opinion,Technologies by Julian Edgar

Recently I thought it might be good to do some further tertiary study.

The topic? Transport history.

I like trains, cars, ships, hovercraft, airships and the like, and I read a lot about them, especially their technological development.

So I looked for a tertiary institution that offers a course in this area. I found one too, offered by distance education at a university in the UK.

I wrote to them, giving a little of my background (diploma and degree in education with majors in geography and sociology, graduate diploma in journalism, author of a tech book on cars, and longstanding journalist in the field of electronics and technology), and asked if their course would be suitable.

They were positive but pointed out that the course, a certificate, was taught at a level that may be overly simple for me. However, when I looked at the content, it actually looked really interesting.

The first year of the two-year course was based around content that traced the development of transport within Britain over the last few hundred years, and in the second year, students were able to write a dissertation on, the university said, any transport-related topic they liked.

The course was not cheap (around AUD$5000 a year) but as I say, it looked good – especially with the freedom in the second year. In fact, I mused, what sort of topic would I pick for that long second-year paper? I came up with three possibles: automotive front suspension design 1920 – 1950, aerodynamics of passenger cars 1970 – 1990, and development of the SR.N4 commercial hovercraft. Each I thought would be a worthy area of major study: I became quite excited at the prospect of the course on which I was to embark.

I wrote to the university, nominating these topics and asking if they’d be suitable.

But then things started going downhill.

Back came the reply:

“Technical subjects are, of course, very acceptable so long as the study contains analysis in the historical context. A straight story of changes in design with no linkage to social/economic/historical influences would not be acceptable.

The course convenor went on:

“In other words, we would not be interested in precise details of nuts and bolts but we would be interested in how and why it developed that way.”

Further, the lecturer nominated a link that, she said, showed the approach the university liked. The most interesting part of that link was at http://www.historyoftechnology.org/booklets_intro.html. Here is an excerpt:

Scholarly specialists now largely agree about what is called social construction: the idea that technologies succeed or fail (or emerge at all) partly because of the political strategies employed by “actors”— individuals, groups, and organizations—that have conflicting or complementary interests in particular outcomes. [….]  …there is no doubt that technological designs are shaped by ambient social and cultural factors…. the shaping of technology is integral to the shaping of society and culture.

In other words, the development of technology should be examined through a sociological rather than technical prism.

Now as I wrote above, I have a degree-level major in sociology: I am completely happy that a historical analysis of technological developments should occur in part within a sociological frame of reference. And  clearly, the success or otherwise of the technology, if assessed by the change it brings to society, is well measured and described by an analysis that takes into account the contemporaneous (and subsequent)  economic, political and cultural environments.

But to suggest that those responsible for the development of the technology are mere actors, implicitly of no great consequence – well!

The development of hovercraft technology very much reflected the economic, political and cultural environment of 1960s Britain – but crucially, without the ideas of one man, Christopher Cockerell, there would have been no hovercraft in the first place! Further, without the intellectual capital expended by engineers within Saunders Roe, bent on overcoming specific technical issues, there would have been no giant SR.N4 hovercraft – even if all this occurred in exactly the same sociological and historical environment.

You simply cannot exclude from the story the people who came up with – and refined – the ideas: they are integral to the technological development, as are the discrete steps they took in that process.

Furthermore, the suggested approach ignores the idea that there are objective measurable outcomes in technological achievement itself – it is not only within a social context that any worthwhile judgements can be made of technology.

Would Issigonis’s Mini have been less of a technological achievement if the car had been unsuccessful within broader society – something that, soon after its release, looked quite likely? If analysis includes objective automotive design criteria such as packaging efficiency, fuel economy, performance and handling – then no, it would have been just as great a technological advance, even if it had been a commercial flop with little overt societal impact.

So while I certainly understand the critical importance of a social context in terms of genesis, adoption and impact of a technological advance, to pay only lip-service to the nitty-gritty of the technology itself, and its process of development, seems to me to be missing a helluva lot of the wood for the trees.

It’s easy to be uncharitable: perhaps this approach is the one endorsed because people don’t want to be bothered understanding the technology – better to just accept that it would have come about anyway….so who cares how they actually did it?

But what an incredible belittlement of engineers….

Footnote: I’ve decided not to do the course.

3500 kays in the UK

Posted on January 19th, 2013 in diesel,Driving Emotion,Economy,hyundai by Julian Edgar

I’ve just come back from driving 3500 kilometres around the United Kingdom, done in 3 weeks.

The purpose was a family holiday, where we just happened to see as many engineering marvels as we could in that time and distance – something that was achieved, and will be covered in an upcoming AutoSpeed series.

A lot of the driving time was spent on the excellent freeway (“motorway”) system that exists in Britain. These roads are typically four or six lane highways – here in Australia, they’d all be marked (and enforced) at 110 km/h. And in the UK, the posted motorway limit is in fact 70 mph (113 km/h).

But the kicker is that people actually travel at 80 – 85 mph (about 135 km/h). Despite there being plenty of traffic sped cameras, and an occasional police car, the enforcement is set at a level where these speeds are fine.

And boy, does it ever make a difference to travel time when you can sit on 135 km/h in the right-hand lane!

The drivers are disciplined, courteous and aware – average for average, much better than drivers in Australia. In those 3 weeks, much of it in wet and windy weather conditions, I saw very few accidents and witnessed even fewer driving mistakes.

The Australian politicians who believe that any higher limit in (most of) Australia than 110 km/h would kill swathes of people – I wonder if any of them have driven overseas (as opposed to being chauffeured) while on their international ‘study trips’…

The car we had for the trip was a Hyundai i40 diesel ‘Blue’ wagon.

 

It was brand new, with only delivery kilometres on the odometer. Well-equipped in the guise we had it, it came with seat warmers, excellent navigation, dual climate control, leather, colour instruments LCD, parking sensors – and so on.

The diesel was coupled to a manual 6-speed box, that was slightly notchy when cold and always had an overly long throw. Not over-endowed with power, the car turned in a fuel economy in the low Fives in litres/100km – really excellent with the car heavily laden and often driven at speed.

Driving mostly on highways disguised one of the shortcomings of the engine – its off-boost performance (say up to 1500 rpm – and a low redline in a diesel, remember) was woeful, and the transition to on-boost torque sudden and lacking progression. In urban conditions, and especially where a sudden spurt of power was needed from a standstill, the car could border on dangerous.

Interior packaging was very good, with one exception – as with many current cars, the window sill line was too high, especially in the back. Even sitting on a booster seat, my 8-year-old son could only just see over the window line – stupid.

Ride and handling were also fine for our purpose. Grip levels weren’t huge (low rolling resistance tyres?) but with good stability control, there were no issues. Ride quality was excellent – but remember, that was with 3 people and lots of luggage. Less heavily laden, the ride would have been harsher.

I thought it a superb car for the purpose to which we put it. In fact, the Hyundai struck me as a very well built car coming from a maker with perhaps 50 years of designing and building cars behind them. Interesting, when even 5 years ago some Hyundais were dubious at best.

I’ve been shooting photos for publication for over 30 years, and I knew the trip would need lots of pics taken. However, I didn’t really want to lug around my digital Nikon SLR – so I bought a new camera. After much consideration and reading of reviews, I got a Canon G15.

What a superb little camera!

Its ability to shoot with high quality in very low light, often without flash, is exemplary. This ability comes from having a fast lens (unusual in pocket cameras), high lens quality at all apertures (again unusual in this class) and having sufficient modes to match the needs of a professional – or the rankest of amateurs. I particularly like having exposure compensation on an instant-access dial – I less like not being able to quickly modify flash output.

Especially in difficult, contrasty or low light conditions, the camera performed very well indeed.

Fourteen years of innovation

Posted on October 16th, 2012 in Driving Emotion by Julian Edgar

Today marks the launch of the 14th anniversary issue of AutoSpeed – we began in October 1998.

Over those 14 years we have covered many unique approaches to DIY car modification – and DIY tech in general.  I am proud of that history of innovation and lateral thought:  it’s also something I think undervalued by many. (To put this another way, if we stop publishing tomorrow, I am sure that in five years’ time many people would trumpet about the ‘good old days of AutoSpeed’ and ‘wasn’t the stuff they did fantastic’!).

Those innovative and unique stories include:

DIY aerodynamic testing and development – including measuring the effectiveness of bonnet vents, front spoilers and undertrays; and visualising airflow over cars by use of tufting and on-road testing.

Low cost DIY electronic modules – including interceptors, rpm and voltage switches, temperature alarms and displays, current pulsers, air conditioner controllers, intelligent intercooler spray controllers and air/fuel ratio monitoring.

Ground-breaking modifications – including electronically altering power steering weight, modifying regenerative braking on a hybrid, supercharging and then turbocharging a hybrid, switching off stability control without affecting traction control, and electronically modifying EGR for better fuel economy.

Down-to-earth and straightforward coverage of topics that many people find difficult – including aerodynamics, suspension design, electronics and current car technology.

The design and building of lightweight and sophisticated pedal-powered recumbent vehicles – including one with arguably the best suspension design (and so best ride/handling compromise) of any such vehicle in the world.

I could go on – simple modelling of spaceframe structures, all the good bits you can find in discarded goods like photocopiers and printers and VCRs, innovative intercooling approaches, how to use hand tools, measuring on-road acceleration using a boat clinometer, finding intake system restrictions…

And so to this issue’s main story: designing and building your own tuned mass vibration dampers to stop driving light vibration.

It’s another ground-breaking story of the sort I have seen nowhere else.

Heavy cars

Posted on August 22nd, 2012 in Driving Emotion,Honda,Materials by Julian Edgar

My Honda Legend is the heaviest car I have ever owned. As a fan of light cars, the Honda’s mass is not something that fills me with joy – but as described elsewhere, it was my best choice based on a variety of factors.

So does it feel unwieldy – even lumpy? No it doesn’t. Particularly because of the yawing ability of its all-wheel drive system, it turns-in readily and feels poised and amenable to directional change.

Driving the car, especially over bumpy roads, you can feel its favourably high mass / unsprung mass ratio: the body tends to float over the bumps rather than drop into them, and there’s never the feeling of the car being ‘shaken by the wheels’ that occurs in vehicles with a low sprung / unsprung mass relationship.

So is it all sweetness and light – the 1855-odd kg doesn’t matter?

No.

The Legend, despite its big brakes, is a car that requires clear effort to slow. Part of that effort can be seen in how quickly it blackens its front rims – even in gentle driving.

It also cannot get away from the disadvantages of its mass in fuel consumption. Particularly noticeable in open-road undulating terrain, the fuel burn when hauling its lard-arse up hills is high.

However, with lots of kg, a low Cd and relatively small frontal area, the Legend is a car that will roll a long way. Time and time again in the first month of ownership I have found myself committing that cardinal driver sin of going straight from the accelerator to the brake, rather than getting off the power sufficiently early that there can be a roll-down time in between.

I think it’s a good car… but I think it would be a better one at (say) 200kg lighter. That would have required all-alloy construction, something that another Honda I own (a first gen Insight) already has. (The – much smaller – Insight has a mass of just 827kg!) An all-alloy Legend I would guess at around 1600kg – still no light-weight, but more appropriate for its size and equipment level. I wonder why Honda didn’t do this? In the Australian market (at least) the car was underpriced compared to its Euro and Japanese opposition, so you’d have thought they could have worn the extra cost.

But whichever way you analyse it, the disadvantages of high car mass well outweigh(!) the advantages.

Life is not a rehearsal

Posted on July 14th, 2012 in Driving Emotion,Opinion by Julian Edgar

It is with a little reluctance that I write this column. I am sure that many will suggest I type it just to argue how wonderful I am; others will dislike it on the more fundamental (and justifiable) level that my values are different to theirs.

But here goes.

As I have mentioned in the past, my job has dramatically changed over the last few years. I now work primarily as a trainer, teaching Federal Government public servants the skills and arts of business writing. As such, two or three days a week I find myself in a government department meeting room, wearing a suit and pointing a remote control at a laptop screening a PowerPoint presentation.

That change in vocation is in some respects so radical that at times I feel slightly surreal.

Before the age of about 45 I wore a suit only twice (once in court defending a driving charge and the other time when I got married!); now I wear a suit many times a month.  Previously, I knew only vaguely of many government departments and their processes; now I find myself accompanying people into buildings so tight in security that my staff contact person has to stare into a retina recognition camera to gain admittance to their own building.

It’s all very weird.

The other day, when training in Sydney, I found myself working in a room equipped with a large wall mirror. Every now and again, mid-breath about using the active voice or writing in short sentences or using mind maps to organise formal documents, I’d catch sight of myself in the mirror and wonder who the geezer was, bearded and balding and greying – and spouting all this stuff.

In my groups are typically 15 public servants, people aged from their early Twenties to their mid-Sixties. The courses are pretty full-on, so there’s not much lackadaisical chat during content times, but during the breaks I frequently get talking to people. Since I might be training in Canberra or Brisbane or Sydney or Melbourne or Adelaide, I am often asked where I live.

“Eighty kays north of Canberra,” I say. After a pause, I add:  “I live in a town of 100 people.”

At this statement people typically blink, then ask more questions. The conversation often then turns to lifestyle, and then to work/life balance. 

It seems strange to tell people that there exist lifestyle choices that are very different to the ones they have (apparently) chosen.

(In fact, I think most don’t actively ‘choose’ a lifestyle at all – they fall into it and then spend a lot of time justifying it.)

What choices then?

With the cost of real estate around where I live, you can choose to have a small mortgage.

With a low mortgage, and plenty of land to grow fruit and vegetables and have chooks, you can choose to work only two or three or four days a week.

In fact, if you work more days, you can choose to have one person in a couple stay at home to look after children.

Or study externally.

Or volunteer and work in the community.

Or….

You can choose to have your children attend a tiny primary school with unheard-of parent/student ratios.

You can choose to live in a place where people smile friendly (and genuine) greetings when you meet in the street; you can choose to live in a place where crime is vastly lower than any large city in Australia.

(See why at the beginning I talked about values?)

Sometimes people have asked about a social life – surely it must be deadly-boring living in such a place? But I can state that, if it weren’t for fact that we prefer a rather hermit-like existence, we could have a stronger social life here than anywhere I’ve ever lived. Telling no lies at all, as a family we could go to something like 15 local social events a month.

Commuting time in a car? My main work is in Canberra, and so that adds up to maybe six hours of commuting a week. But I like driving, and with the vast majority of that travel on empty country roads, it’s no hardship. (Especially now that podcasts can be seamlessly recorded and then dialled-up as required. In fact, just today, I was listening to a fascinating series on human consciousness – full of philosophy and thought-provoking ideas. Not for everyone I agree, but for me the travel time just flew past.)

One of the interesting things is that since moving here, we have discovered other like-minded couples who have done just the same thing. People who, through their qualifications and abilities, could be earning a lot of money (try two science PhDs in a town of 100) but who, deliberately and carefully, have chosen to earn much less – and to devote far more time to recreation and/or time with their children, to spend less on the latest large-screen TV or pool or huge house, and to relish perhaps a simpler but more down to earth existence.

I guess that’s nothing new – people have been choosing an ‘alternative’ lifestyle for decades. But the ability to remain completely connected, and to work in a major city or town – but on what is effectively only a part-time basis… I wonder if that isn’t new.

And it’s not just this location. For fun, I just looked up real estate prices and commuting times for places located outside of Melbourne, Brisbane and Adelaide. I could almost immediately find houses and land just like where I live – and at similar prices.

The last time I wrote a blog post like this I finished: if you don’t like how much you pay each month for your mortgage (or rent), or how long you spend each day stuck in traffic breathing fumes, look more widely. It’s not your job or money that is preventing a move: it’s you.

Now I’d say this.

Life is not a rehearsal: this is the only one you have.

Through my work I constantly meet people who seem deeply unhappy: caught in a mad rush through an unfulfilling life. Often they’ll confide to me that they hate their job – but gotta pay that monthly mortgage, y’know.  Or they’ll ruefully talk about some office minutiae that is today’s crisis – in full understanding that next week it will all be forgotten.

If you live in a large Australian city, you’re someone who is open to change, and you’ve similar life values to me, look in rural Australia. Adjacent to major centres are places where you can live a lifestyle that is simply wonderful.

To put that in bluntly honest terms: if I lived in a major Australian city, I couldn’t afford to work only three days a week and spend the rest of the time playing with my car projects in my new, purpose-built home workshop. 

But that’s what is available when you nearly halve your non-digressional living costs….