the magic circle

Personally I find punctures one of the many entertaining things about riding a bike. Their random character, the chance to stop where you hadn’t planned to, to demonstrate your competence and efficiency, your progress towards the distant – probably impossible – goal of ‘becoming a cyclist’. A puncture is a special message from God – or John Boyd Dunlop – “Go home and back-up your hard-drive my child. For surely if it spins and was made by men, one day it will fail.’

Let me make a bold prediction. There will be pneumatic tyres on suitcases within ten years.

Think about it? Wheels on luggage used to be quite a novelty now they’re everywhere. Baby carriages – once sedate appliances with leaf springs -  are now available with puncture possibility. Where will it end?

also seen in Stoke Newington Church Street

We can divide the World’s population into two categories, those who understand how to fit pneumatic tyres and those who do not. Key information is in the three digit element of the ISO number etched on your tyres ’622′, ’559′, ’406′ or whatever.

These numbers are not much used in England, where ignorance of technical matters is often worn as a badge of honour. Here people prefer to use the historic designations – ’700c’, ’26 inches’, etc. – of a tyre’s diameter. The problem with these is they aren’t definitive. According to the late, great Sheldon Brown who – as usual – provides the most comprehensive explanation of the subject, there are seven(SEVEN) unique, non-interchangeable tyre sizes that may be marked with the diameter ’26′.

Once – in a specialist bike shop to make a distress purchase – I asked the tattooed man at the counter for “two 406 tubes please?”

“Sorry we only do BMX.” He replied.

In his defence when I explained – gently I hope – that 406 is BMX, he took it on the chin saying: “Oh yeah, I’ve seen those numbers on the boxes” and thanked me for the clarification as he took my cash and handed over the rubber.

This three digit element – ’630′, ’590′ ’349′, or whatever -  is known as the BSD – a TLA* standing for  ‘bead seat diameter’. The ‘beads’ are the wires around the inside edges of the tyre. BSD is the inside diameter of the tyre and also the diameter of the circle on the rim where the tyre beads sit when in use.

The centre of the rim – the ‘well’ of the rim – will always be nearer the centre of the wheel, and a smaller circle than the bead seat.

life changing information

In order to fit a tyre on a rim you have to control the bead with tension so it stays along the shorter circle of the rim well. This generates enough slack to flip the last section of tyre bead over the rim wall.

People who think fitting tyres is hard don’t know how to do it. There’s no shame in this. Nobody is born knowing how to mount a tyre on a rim. The problem has lately been exacerbated by ‘puncture proof tyres’. Some of these are so rigid that – as well as giving a slow and uncomfortable ride – they are harder to fit.

A pneumatic tyre is already a  Faustian bargain. You get to ride on air, but will also suffer random punctures. Nasty armoured tyres raise the stakes of this gamble. They mean you are less likely to get a flat, but when you do it will be harder to get the tyre off to change the tube and more of a challenge to get it back on.

If you understood the above – and didn’t know it before – you are now on the way to joining the minority group, the people who know how to fit tyres without hurting their fingers or losing their sang-froid. This minority divides into those who can fit tyres but don’t have the conscious competence to explain to others how it’s done, those who know how they do it but want to keep that knowledge secret. If you can charge others £17.50 to undertake a simple task on their behalf, and you’re not able to do much else, why would you want to give them the secret of doing it for themselves? Others among the cognoscent are so desperate to drag the innocent down to their own tragic level of bicycle-dependence that they give the secret away freely.

Readers of the Guardian online may have noticed this item on Monday’s front page, a link to free content, moving pictures with audio commentary and written notes, from MadeGood.org.

more important than cancer but  less significant than hungry hippos

I’m proud to be a collaborator on this project to spread knowledge of, and confidence in, the simple – not rocket-science – subject of keeping push-bikes running sweetly. This directory of instructional films will soon be enlarged. The plan is to make the library comprehensive and keep it updated.

Off course some people – especially young men with old men’s beards – will find plenty of weak spots in this work-in-progress. But hey, it’s free, and you have to start somewhere. Punctures are part of riding a bike, and the first twenty are the worst.

*TLA = three letter abbreviation.

substitute

Travelling without a bicycle can be an unsettling experience. Looking up from your reading book, glancing round the train carriage with the ominous feeling that something’s missing; only to remember, with relief, that – because you’re rattling South from London-Waterloo in the rush hour, and can walk from the station to the appointment at the other end – you left your trusty, rusty push-rod locked-up on platform 11.

If you have to travel without a cycle always consider taking an umbrella. An umbrella is a useful tool but can also serve as bicycle methadone. Umbrellas and bicycles have a lot in common. Both are invaluable when required but can be awkward encumbrances when not in use. Both are prone to technical failures, particularly if not of serviceable quality, or used inappropriately. You might have to fiddle with them to make them work. Beware of USO’s(umbrella shaped objects) sold at unrealistically low prices.

An investment-grade cotton gamp from here

we had that Charles Dickens in the other day

…is a nice accessory, and when rolled, can serve as a makeshift ice-axe in emergencies, but carrying a 200 quid example – like riding round town on a three-grand bike – may be nerve-wracking. If something of this quality…

polished maple solid stick

…ends up in lost-property, it’s got to hurt.

A personal favourite – a nice compromise between economy and durability – is the Rohan treking umbrella.

370 gramme bicycle substitute

The G.R.P. stick and frame make a lightweight package that can flex nicely in strong winds reducing risk of sudden failure. It will never corrode. The manufacturers make no claims for the canopy’s UV protection, suggesting carcinogenic rays can get through – which won’t happen with the old-school cotton example – but it’s still cool in the shade.

It comes with a mesh sheath so will dry while rolled and can be toted slung across a shoulder rifle-style. Alternatively strap it on your big, butch courier bag for the ultimate in paramilitary picnic chic.

paramilitary picnic chic

problems of giantism (part 1)

Cycle-sport is fascinating. You can learn a lot from studying it, even more from taking part; but – really – trying to go fast on a push-bike is perverse. If you want to go fast get a motorbike. When travel is voluntary there’s no problem with going slowly. If travel is a pleasure why would you want to get it over as quickly as possible? The real point of a push-bike is to go slowly.

Going slowly means that -  if you want to make the kind of trip that can be drawn on a 30th Anniversary Ortleib pannier, away from polar regions in Summer -  you’re going to spend some time riding in darkness.

Nowadays the Dunwich Dynamo has plenty of alliterative homage.

In twenty years riding all night has migrated from almost secret vice for lonely old men to become an established niche in the many-roomed mansion of bicycle-madness.

At this time of year some people email to ask: “How to register?” “Are there places left?” even “How much does it costs?” It’s more of a pleasure than a chore to explain to them that it’s just a ride to the coast. Turn up. Set off. Have fun.

When people ask “if I organise it?” I counter with an illustrative question who organises Christmas?

It just happens.

Jez Hastings – co-founder of the Dunwich Dynamo – rode the Centenary Paris-Brest in 1991. The Dynamo’s start – rolling out of a capital city in the evening -  is a self-conscious homage to that great event. The Dunwich Dynamo – like the Paris-Brest – now attracts a range of pop-up cafés along the route. These range from the long established professionals…

“Sirs

Your cycle event passes through the village of Peasenhall where I have a business called Emmett’s. We have been in operation since 1820 making traditional hams and bacon and held a Royal Warrant for over 35 years.

We have now opened up a cafe serving teas, coffees and light meals.This has proved to be very popular.The reason for my email is to highlight this service in respect of the Dunwich Dynamo and to see whether we could have a link to your site.

I look forward to hearing from you

Mark Thomas
EMMETT’S
www.ebacon.co.uk”

…to enthusiastic front-garden gazebo and camping-gaz amateurs.

The growth of pop-ups seems to be reaching a breakthrough but it’s not all positive.

“Patrick

Since I suggested the food stop at ********* I have been getting some very worrying feedback from local residents who are deeply unhappy at the behaviour of some of the riders who cause considerable and prolonged disturbance as they pass through the village, causing many folk a sleepless night. The intention was that our local Guides group run the food stop, as my daughter is in Guides and this was to raise funds for her work in ********, but I am very concerned that as we will present a fixed target for local resentment the risk of an unpleasant reaction on the night is too great for us to take. In view of this I have taken the decision to abandon the idea. This is obviously a great shame but even if there is no reaction on the night the blame for any disturbance will be laid at the door of Guides and my family, and this is something I cannot afford to risk.

Kind regards
*******”

This gracious withdrawl is a symptom of a persistent problem.

We all know riding a bike doesn’t make you a nice or sensible person. Some people are so dumb that – because they set off from Brixton, Shoreditch or Homerton and have only been riding a bike – they think they’re still in the inner-city deep in sleepy Suffolk. Others, following the modern delusion that riding a bike gently for 185 kilometres is some kind of ordeal, worthy of being sponsored to collect money for homeless pandas, don’t have the capacity to consider the feelings of others. Like hikers on the summit ridge of Everest shuffling grimly past the dead and dying they can’t think beyond their own survival.

Most of the persistent disturbance comes from distressed pilgrims debating navigation at junctions. Someone stops because they don’t know the way and aren’t following the route-sheet. Another clueless nitwit rocks up and they start a conversation. A third person arrives. The first decides it’s time to adjust their wardrobe or eat a sandwich, more come through, before you know it there’s an impromptu cocktail party going on.

Now don’t get me wrong. The Dunwich Dynamo is a social event, but there are plenty of rural lay-bys, isolated verges and moon-lit glades to stop for a snooze, a cigarette or even some frantic networking far removed from bedroom windows. The idea is to show control, for a thousand seasoned tourists to pass like ghosts leaving ne’er a banana skin to betray their stealthy passage.

Instructions on how to make a handy routing information holder for less than one pound will follow shortly.

If you’re planning to make the trip this year – why not? -  please set a good example, make it look easy and – softly – encourage others to do the same.

Sober cycling

“A fixed wheel is a sprocket fixed solidly to the rear hub, so that pedalling is always rigidly coupled to the drive through the chain. The merits of which is best, the fixed or the free, is hardly worth discussing now that it is so simple to have a reversible hub with a fixed sprocket on one side and a free wheel on the other.”

Cycling Manual & Year Book

17th Edition

1939-40

Being a drunk on Saturday night can be great fun, everyone’s good looking, everything is funny. On Monday morning, when your money, your health and your loved-ones are gone, things may seem less rosy. Riding a bike is like being an alcoholic. It expands the range of experience.

Coasting down a good road, at thirty kilometres an hour, silent and sweat-free, you’re a God. An unforeseen mechanical failure, rising headwind or long hot climb can quickly change that status to ‘grovelling beast’.

On a fixed-gear you lose the best parts of riding a bike, relaxing on a downhill, freewheeling in a massive tailwind. In exchange many of the worst problems are also missing. You don’t have to turn the pedals. The mechanics are simple. There’s nothing tricky to go wrong.

It’s strange that – for a brief period early in the Twenty-first Century – single-fixed carried a radical, outlaw image. Strange because riding without a freewheel is cycling at it’s most sober.

There was a man on the January edition of Critical Mass, on a single-speed bike whose frame – branded ‘Tokyo Fixed’ – was equipped with a freewheel. No harm in that – he had hand-operated rim brakes front and rear, a mellow specification – even better if he’d fitted mudguards – but his sensible personal choice indicates that the fixed-gear boom is over.

In olden days a craze would mature slowly, creeping through the land at the speed of an invasive plant; already old-hat in the big city, when people in the provinces were just catching on. In the 21st Century global-village you can read Fixed Gear Gallery just as easily in Llanelli, as Shoreditch and those candy coloured rims will look as passé in Cumbria as they do in Clapton.

Hard court polo - free at last

Hard-court bike polo boomed in parallel with the global infatuation for 1897 specification. (The automatic freewheel, the last element of the modern bicycle, hit the streets in 1898.) Fixed gear bikes are used in old-school bike polo played on grass fields. Hard court polo has evolved rapidly and everyone now competes on freewheel bikes.

That’s what happens with bike crazes, they attract a mixed cohort at the beginning, reach a peak then dissolve into sub-sub-cultures which are absorbed back into the many roomed mansion of bicycle madness.

Bike crazes are great, they bring new blood which has a ratchet effect on cycling. Some ‘fixie’ aficionados will have moved on to long-board skating, or bee-keeping, or whatever’s getting the kids going these days, others are out training on road bikes, saving up for leather luggage to hang on their roadsters or just riding to work.

Those who came to cycling via ‘track’ bikes have two advantages over those washed in on previous waves. They’re much more likely to have some minimal, mechanical literacy. If your bike has one gear – two if you count walking – then you really need, and are likely to develop, an idea of what a ‘gear’ actually is. Neophytes on mountain bikes just tweaked the thumb-levers until the bike felt OK and stooged off to the supermarket, the cinema or the dance studio, anywhere except the mountains. Fixie victims steered clear of banked tracks in timber or concrete but needed to know how far each turn of the cranks was going to take them.

Even more important is inoculation against dogma. People fear freedom and a common response to all the mysterious, untested potential of this pioneer era of bicycle travel, is retreat into dogma and sectarianism.

If you like riding fixed, if you came to cycling via an enthusiasm for 1897 bikes, then you probably know that the day before yesterday the thing you like best was theoretically extinct – anywhere except a velodrome or a circus tent – and bound for the museum along with the Woods valve and the cotter-pin.

It’s useful to consider the opinions of others, but bicycling is much too fresh to have developed any kind of classical form. Study the principles but don’t be afraid to experiment. And don’t knock it till you’ve tried it.

What causes avelopia?

If you ride a bike – and most sensible people do – you must have pondered ‘how do people without bikes manage?’

I can imagine the details of avelopes‘ daily agendas – waiting for buses or trains, paying for taxis, enmeshed in the troublesome uncertainties of motor-dependence – but their emotional lives are a mystery; so much patience so little imagination.

The parallel question - why don’t they ride bikes?  – generates a lot of heat in the toyland world of bicycle politics. Some ideologues like to imagine a general reason why more people don’t cycle, overlooking the fact that most English people don’t need a reason not to travel by bike, any more than they need a reason not to eat horse meat. They don’t do it because they’re normal and normal people don’t do it.

There are certainly English people who’d like to travel by bike but are unable to because of the prevailing motorcentric conditions. Children and young teenagers in particular have their autonomous movement restricted by a system that allows reckless behaviour in public space by the motor-dependent. It’s tempting to over-estimate this suppressed demand. The theory that a large section of the non-cycling public are in a precipitous pre-cycling state – only waiting for conditions to change so they can emerge like butterflies from chrysalides – is attractive because it suggests that flicking some national policy switch will release a popular wave of cycle-travel. A wave that will resolve the persistent political conflict around who owns the road and what streets are for, conflict that’s likely to intensify as we grope toward an exit strategy for motor-dependence.

Meeting thousands of people on the point of taking up cycling has taught me the limits of generalisation. Some introduce themselves by saying:- “Of course I’m never going to ride on the road – I just want to go round the park with my daughter for exercise”, others with:- “I need to learn to ride a two-wheeler because I want to get a motor-scooter.” And everyone knows motorcycles are really dangerous.

BSOs definitely provide a barrier to many at the decisive moment of taking up cycling. I’ve run road-side clinics in some parts of East London where all you see are unserviceable, hardly rideable  bicycle shaped objects. Products that weren’t designed to put people off cycling, but might as well have been.

I would never be bold enough to rank -  “I’d like to cycle but I bought a bike and it fell to bits in two weeks” – against other stated causes of avelopia but it certainly exists as a significant practical barrier, a reason from somebody who tried, not a justification from someone who wouldn’t dream of it.

Many (most?) English people never think about riding a bike. If they were to say:- ‘Oh my God I’ll never ride a bike!” That would be progress, at least they’d entertained the possibility. When others are passive on subjects that we care about there’s a temptation to project our feelings onto them. The fact that – in all the hot air generated, all the green ink spilled – on the mysterious subject of why more English people don’t ride bikes for travel, the BSO question receives exactly zero consideration, may confirm a suspicion that most theorising on the subject results from this projection.