The Trains The E10 Will Replace

381 series: the last of the JNR-era electric express trains

We mentioned the upcoming withdrawal of the Doctor Yellow Shinkansen track inspection trains, but there is another retirement I've wanted to talk about as it's just happened, and it's a train I had the chance to ride last summer.

Launched in 1973, the 381 series was the Japanese National Railways (JNR) first tilting electric express train, designed to speed up the Shinano limited express services on the winding mountainous route between Nagoya and Nagano. The tilting compensates for G-forces inside the carriages, allowing the train to take curves up to 25 km/h faster without creating passenger discomfort. As such, it is already a significant piece of railway history, with JR Tokai preserving one lead car at its SC Maglev Railway Park museum in Nagoya.

Over the next 50 years, the 381s would be moved around whenever they were superseded on specific routes, but soldier on nonetheless. Their last services would be JR West's Yakumo limited express between Okayama and Izumo, another route with lots of hills and curves. Now, it is replaced by brand new 273 series sets, based on JR West's current express train design, still with tilt.

The 381 series lived through the entire L-tokkyû period, in which many limited express services were marketed with an L symbol signifying higher levels of convenience. This logo was phased out in the 2000s and 2010s largely due to all JR limited expresses running to L-tokkyû standards, and as far as I can tell, the 381s are likely the last trains to wear the L badge, as well as the classic JNR express chevron seen above, on a regular basis.

さようなら381系

More faces on Dôtonbori

There are the classics on Dôtonbori: Kuidaore Tarô, there's a well-known animatronic crab, and of course the Glico man. I reckon this ramen-loving dragon is my personal favourite.

... though, giving it some thought, I quite like the hand holding a sushi and Spiderman reaching for a pearl too.

But oh boy, are you ready for some real randomness?

This is the front of the Dôtonbori Hotel. According to Atlas Obscura, the hotel had these pillars made to symbolise them welcoming people from all over the world - the faces represent East Asia, Africa, the Middle East and Europe -, at a time when domestic tourism was dwindling (early 1990s).

Latest ambiance from Strasbourg, with love from our end-of-year mascot: Chris Moose!

Shionomisaki: Honshu's southernmost point

Southern Kansai is probably best known for the Kumano Kodô, the pilgrimage routes related to the Nachi shrine and temple complex with one of Japan's most famous waterfalls. But Southern Kansai is also Southernmost Kansai, and the Shionomisaki peninsula, part of the town of Kushimoto is as South as it gets for the main island of Japan.

Beyond this lawn and those rocks is the Pacific Ocean: just water for thousands of kilometres in this direction! The nearest substantial landmass due South from here is Papua New Guinea, 35° latitude lower, or 10% of the Earth's circumference!

That's a nice lawn by the way, it would be a shame if someone...

Shionomisaki is basically Honshu's version of "Land's End" or "Finistere", and there is a little leisure complex to mark it. The recent Geopark Centre is good, but the blue buildings in the previous shot, the shop and restaurant and the observation tower, are from a different time and showing their age - case in point, the children's cups in the restaurant with the mascot of the 1998 World Cup in France!

Japan's rail speed record holder: 300X

Sticking with the Tôkaidô Shinkansen and the SCMaglev & Railway Park, this is the (highly abridged) story of the fastest conventional train in Japan.

Following privatisation and sectorisation in the 1980s, and seeing France and Germany take the lead in the high-speed train department, the three JR companies that had Shinkansen lines set about catching up to offer 300 km/h services where they could. The aerodynamics and sheer weight of the venerable 0 Series and its derivatives weren't going to cut it, so each company designed a prototype train to test new technologies.

JR Tôkai's solution was 300X, officially Shinkansen Class 955 - numbers starting with 9 are trains not open to the public, either prototypes or work trains like Class 923 "Doctor Yellow". Launched two years after JR West's WIN350 and JR East's STAR21, it featured two radically different end cars. The more elegant one, in my opinion, is on display at JR Tôkai's museum in Nagoya, while the other is preserved at JR Group's research centre in Maibara. The intermediate cars have all been scrapped.

The three prototypes took turns to hold the national rail speed record, and, 300X being the last, it took the record last, and holds it to this day. We mentioned the fact that the Tôkaidô Shinkansen still had too many relatively tight turns, but the Maibara to Kyôto stretch is the best part, and that's where this train hit 443 km/h in 1996. This video may, or may not, be that run, but it still looks very fast - note the unusually large, "flying saucer" pantograph cowlings.

Unless JR East decide to go completely bonkers with their ALFA-X prototype, it's unlikely that the record is going to be beaten any time soon. It's not in the spirit of these trains, they are pure test beds and run quite extensively with the aim of increasing service speeds. Records also require special preparation of the tracks, which is why the French TGVs made their 1990 and 2007 record runs before the opening of a brand new line.

But JR Tôkai have gone much faster with their Maglev programme, which holds the world speed record for passenger trains outright with 603 km/h. Behind 300X at the museum is a predecessor of that record holder, MLX01, the first Maglev train to clock over 500 km/h. Again, this is not (just) showboating, the lengthy test programme's main aim is to prove that consistent service at very high speed with this technology is feasible, so that the Maglev Chûô Shinkansen can achieve this when it opens (if Yamanashi-ken can agree on a route).

I can't remember riding a steam train before, though deep inside, I feel I probably had. Anyway, now I'm sure! This is the Chemin de Fer Touristique du Rhin, a short line near Colmar which runs steam engines and a set of old Austrian carriages, of which I'll say more in another post. Meanwhile, it's been a busy time for me recently, so this is just a few photos from the ride while I wind down.

Sangaku Sunday #11

We're almost there! We have three relations between our unknowns, the radii p, q and r. Actually, let's write them in the general setting, with any height.

Set SO = h and ON = k (so the number b in the problem so far has been equal to k/h). Repeating what we've done in previous steps, and substituting q and r in the final equation so that we get an equation with just p (I've done it so you don't have to), this is what we're solving:

The plan is simple: get p with the last equation, deduce q then r with the first two. The execution of the plan... not so simple. That last equation is messy. Let's tidy it up a bit by noting that it is actually a polynomial equation of the variable x=squareroot(2p):

There are formulas for the solutions to an equation like this, but if we can avoid using them, we'll be happy.

Here's what I did - and you can do too: a numerical test. Let's take the simplest dimensions for a right triangle, h = 4 and k = 3. Replace in the last equation and notice an obvious solution. Deduce p, then q, then r. Jubilate - until you realise something is very, very wrong...

More views of Schonach

A quick post today as I don't have much time... So here are some views around the ski jumping hill and cross-country skiing venue for this weekend's Schwarzwaldpokal.

A year ago, I was taking off for Japan

No such five-week adventure this year, but I have the chance to relive the smell and taste of Japan courtesy of Yuki, Kazu, Asaka and Maiko who I met in Paris last month, and who gave me a lot to eat and drink! So, to mark the anniversary, I decided it was time to have nice things...

Kitsune udon with nori, ebi and yuzu senbei

The kitsune udon floored me. The smell of the soup base was enough to transport me, I couldn't get enough of that savoury scent.

Matcha KitKat, dried nattô and konbucha

I hadn't tried nattô in Japan, but I'd read it had a bit of a reputation. So I was a little apprehensive trying the nattô morsels, but a little less so when I read that dried nattô is actually milder than the real thing. And I like it! And so do colleagues I've shared it with!

The konbucha is... interesting. First, do not confuse with kombucha. I know, I know, it's very confusing. This konbucha is kelp tea, a tea made with algae, combined with plum and extra salt. It kind of tastes like the sea, only milder... It's pleasant in its own way, though I'd probably make the next one less strong.

And if you want to run through last year's voyage, I did a travel blog here, but I'll also go through some places here at a leisurely pace (I've already reviewed Kushimoto, Hikone Sawayama and Nagahama -to name what I can remember- from that trip here).

Augusta Raurica

Founded in the 1st century by Lucius Munatius Plancus (which sounds a bit like a joke name but he also founded what is now Lyon), the Roman city of Augusta Raurica had all the amenities you'd expect: a drama theatre, temples, a gladiatorial amphitheatre, baths by the Rhine, and, in the 4th century, a Christian church.

And like all Roman cities, it largely fell into disrepair, the stones reused for other constructions. Restoration was carried out in the last century or two, and... maybe "reconstruction" is a more accurate term?

As such, the theatre is now used for outdoor shows. Along with the foundations of the temple opposite, it's basically become the town park. Same goes for the amphitheatre on the outskirts of the town, now equipped with barbecues and benches, and was hosting an event on the afternoon I went there (I can't find what).

Some underground remains are also open, consisting of basement levels of the baths and 4th-century church, where the heating and water systems were located. The least touched outdoor ruin seems to be this temple, of which little is known.

All in all, the reconstructions and atmosphere make Augusta Raurica less of a geeky history spot and more of a park with a backstory. Not my favourite Roman site, but a leisurely visit, particularly suited for families I'd say.