The miracle of pneumatism

Arthur C. Clarke wrote that “any sufficiently advanced technology is indistinguishable from magic”, and of course for most of us, that is absolutely true.

But I don’t think that mechanical things around us need to be very high-tech to seem like magic.

Magnets, for instance. 100% magical. I now have a helmet (POC Cularis) which has a magnetic buckle. That’s so fancy that I can barely believe how fancy I am. The sling bag in which I carry my daily essentials uses magnetics for the buckles.

Pneumatic tyres. Pneumatic tyres seem almost magical in their ability to transform the experience of moving on wheels. The tyre filled with air was an invention (thanks to Scottish vet John Boyd Dunlop!) with extraordinary consequences. The air inside our tyres, precisely pressurised to support our exact system weight acts as a natural shock absorber, cushioning impacts and smoothing out the world beneath us. It’s like we have captured a cloud and imprisoned it around our wheels. If that’s not magic, I know not what is.

Then let’s think about traction, and how a tyre interacts with the road or path. A pneumatic tyre deforms ever so slightly as it rolls. This subtle transformation of the tyre’s shape allows it to conform to the surface below, giving the rider confidence in their bike’s grip on the road. The air pressure in the tyre provides just enough rigidity to maintain structure while allowing this essential flexibility — a fine balance indeed.

And the final piece of magic is the efficiency of the good old pneumatic tyre, unchanged conceptually since 1887. By absorbing the energy that would otherwise be lost to vibration and shock, pneumatic tyres allow us to travel farther with less effort. This efficiency transforms the entire experience of riding a bike. That feeling when you are rolling along a steady descent without pedalling, and it seems possible that you could ride off the edge of the earth before you have to pedal again. Magical.

But the genius of pneumatism (not a proper word, but usage = legitimacy) is also infected by its fatal flaw.

Because the magic of pneumatic tyres is fragile, vulnerable to the smallest betrayal. A a thorn, a nail, a shard of glass—and the miracle evaporates into the disappointment of the puncture.

What was enchantment transforms into disappointment so quickly that it feels cruel. We have to face just how utterly dependent we are on that invisible cloud which until just moments ago, lived in our tyres. When the cloud departs silently and instantly like a will-o-the-wisp, it reveals just how much of our confidence was built on this delicate foundation.

Worse still, the puncture comes at the worst moments: far from home, in bad weather, or when we’re already running late. In those moments, the pneumatic tyre feels less like magic and more like a reminder that life is nasty, brutish and short. The rider is left stranded leaving them with nothing but disappointment and the long walk to the nearest train station.

May the spirit of John Boyd Dunlop ride beside you, keeping your tyres safe from the vicissitudes of the road, and may the miracle of pneumatism always be the wind beneath your wheels.

Colophon

You are looking at the simplest possible personal website. Briztreadley serves my memory and my vanity, in equal measure.

And to achieve those ends, all that the software that runs briztreadley.com has to do is present the articles and photos in some sort of logical way.

In the 25-ish years that personal websites have been a thing, there have been numerous ways to do this. Programs I have used to make websites include but are not restricted to: Blogger, Movable Type, Coranto, Expression Engine, and Wordpress.

This current iteration of briztreadley.com is powered by Micro.blog. It’s adequate for what I want to do here, so that’s useful. It is much more suitable for me than Wordpress, cos Wordpress has a lot going on in the backend.

And I’m a big fan of the minimal but stylish theme that I have selected to display my articles. As you can see at the bottom of each page, it is called Mythos and it was designed by a pastor in the US, Matt Langford. Nice work, Matt.

So five paragraphs in and you are probably wondering: “Is this the most pointless colophon in the history of personal websites?”

Patience, my devoted audience. We are getting there. Slowly.

My writing environment is a program called Craft. And it is both a “word processor” but also a way of keeping all my writing work in one place, for reference. I’ve been writing in Craft for 5 years, and there are apparently 1157 documents in my Craft space, totalling perhaps around 400,000 words (although I think that estimate must be high).

So while I draft all my written work in Craft, both for work and church and personal projects, the output is used in various ways. Most commonly for work, I export a Word document. For church stuff, orders of worship for instance, Craft writes documents to the web, and I can specify the URL I want the program to write to at briztreadley.craft.me.

But articles for briztreadley.com? I was stuck in the archaic process of writing the article in Craft, and then select all, copy and paste into Micro.blog’s web back end. That’s not super clunky, but its also not all that smooth either. And to be frank, I am not a big fan of Micro.blog’s web interface. It IS clunky.

So what has Claude helped me put together, which spurred me on to write this page?

I now have a Shortcut which enables me to post to Briztreadley from Craft, with barely any friction. From Craft, once I am happy with the article, I can run the Shortcut ‘Craft to Micro.blog’ (I have it saved as an icon in the dock of my Mac) and boom the job is done.

Are you the only other person in the world who writes in Craft on the Mac and also then publishes to a Micro.blog website? Get in touch, I would love to share my Shortcut with you.

Bike touring is a massive part of my life, why have I not been touring this year?

Most of the content on this site is about bike touring, and that’s because it is pretty much my favourite aspect of bike riding.

I ride to work on week days, I ride every Saturday, I try to never have a week where I don’t ride a bike. But unless I am bike touring or planning a bike tour, something’s missing in my life.

2026 has been different. I had heart issues which started to make themselves known in November-December last year, and soon after New Year I went into hospital with atrial fibrillation and symptoms which suggested imminent heart failure.

And a week or so later I emerged after having a couple of arteries widened, and since then I have had a couple more cardio procedures, to ensure my continued living presence on this planet.

So that’s nice. I’m fine to commute to work on my lovely e-bike.

What does that mean for bike touring? Well, my riding at present is somewhat restricted, not directly by my heart health, but secondarily through the medication which makes sure my heart gets an easy ride.

Of all the medications that I am currently taking (and their name is legion), the one which affects bike riding is metoprolol. It’s a beta blocker, which works by “relaxing blood vessels and slowing heart rate to improve blood flow and decrease blood pressure”.

What that means is that your heart can barely get above a canter. For me, the maximum heartrate I’ve seen lately is about 115bpm.

And if you are a bike rider, you know that if you looked at your heart rate monitor and it says 115, you are just cruising along, barely raising a sweat.

So that’s me on the bike at the moment. Just cruising along.

But Andrew, why don’t you just try harder?

The answer is that when you try to go harder you just don’t. And about 15 seconds later you sit back on the saddle and say ‘where has all my power gone?’ And there’s a dull ache in your arms and legs that seems to be related to lack of circulation of blood.

So this might not rule out touring. It just means I need to adjust my expectations around how far and how hard I can ride each day.

I am in the middle of my own self-conducted tests around that right now, with the idea that maybe I can do one gentle tour before the year 2026 slips away entirely. And how are those self-conducted tests going? To be honest, not so great.

After this ride, which was not at all a difficult ride, I got home and needed quite some couch time before Annette and I could leave the house for a social appointment with a friend.

So, maybe watch this space, but probably don’t get your hopes up. It might be a while before a “proper” tour is back on my agenda. Sorry Emma, sorry Fi, sorry to all my other touring companions.

State of the stable 2026 edition

Bikes sold since 2024: Sholto Alpine GT, and Cannondale CAAD-X. They were both great bikes for many years, that I loved riding. But with the new gravel bike, and an impending down-sizing of my house, I’ve been thinning the herd, so to speak. I am back down to six bikes!

New bikes since 2024: 2025 Merida Silex 700 gravel bike, and Kalhoff commuter e-bike.

Road bike. Frezoni made by Joe Cosgrove, a framebuilder who lives about 2 km from me in Brisbane Australia. Joe’s primarily known for doing the paintwork on Llewellyn bikes. He built the frame for me in 2004, for my 40th birthday. Seeing that I just turned 62, I’ve had this bike for 22 years. My requirement when we designed the bike was to accommodate wider tyres than most road bikes could fit. Back then a road bike mostly had 700x23 tyres, with 700x25 being a common maximum tyre width. This bike takes up to 700x30, mostly as a result of designing for “long reach” caliper brakes. And as road tyres have got wider, I now run 30s … Grand Bois Cypres, which you can get from Kumo.

Gravel bike. Merida Silex 700. I was very fortunate to get a wholesale price on Merida through Bicycle Queensland’s links with Pedal Group, the importers of Merida. My thoughts on carbon bikes vs aluminium bikes are expressed elsewhere on this site, but suffice to say this 12-speed GRX 800 mechanical, aluminium-framed gravel-eater is serving me very well indeed. Since I got it for a great price, I did not have the slightest hesitation in splurging on Rene Herse tyres for this new machine. 700x44 Snoqualmie Pass are ‘road’ tyres, but as I have also said before, wide slick tyres are my favourites for bitumen and smooth gravel duties. If the road gets gnarly I am on the wrong bike, I should brought the Carve. One odd quirk about the Merida Silex is that the sizing is super stretched out. Mine is a ‘Small’, which is the first time in my cycling history that my bike has not been a ‘Medium’.

Bikepacking bike. Based on a 2011 Specialized Carve aluminium frame. Currently has a Trifox carbon fork. Fantastic device for long steady days on a rail trail or a back road through the bush. The carbon fork with its extra carrying capacity on the forks, and the Jack’s Rack upfront for the Buffalo Bag (it’s a Big Buffalo, size small, ha) work super well. Also love the Vittoria Mezcal tyres in 29 x 2.1. The Carve was the machine of choice for my most recent big adventure, the Munda Biddi Trail in Western Australia in September/October 2024.

Mountain bike. 2016 Kona Precept. 27.5 wheels, dual suspension. Cos singletrack is the best fun. I hunted around for ages when I wanted to buy a “new” mountain bike. Geometry for mountain bikes has changed so much, and these days really focusses on the downhill experience. For that purpose, the dropper post is an integral part of what makes the geo effective, cos when you are descending you’re off the saddle but still in the middle of the bike. This bike is a few years old, and slightly out of date geometry wise. Which probably makes it perfect for me. It goes great on the trails I ride in SEQ.

Folding bike. Brompton. Cos every home needs a Brompton. Not every day, but when you have a Brompton, it makes the suburban train network so much more useful! Any destination within 5km of a train station is now somewhere I can get to under my own steam. I just love being the custodian of a Brompton, thanks to my family friend Kate.

Commuter e-bike. This is a Kalkhoff Image LB Advance, which I am showing off with my friend Sam, from Electric Bikes Brisbane. The model name is horrendous, but the bike is very pleasant and chilled to ride. I run it with just a single pannier at the back to hold my clothes and/or lunch, and put my small essentials bag in the front basket. It has bulletproof Marathon tyres, a 7-speed Shimano internal geared rear hub, and a belt drive. All of which means that the sole maintenance required in daily use is pumping the tyres up every couple of weeks. Built-in lights and quality mudguards make this a commuter for all times and all seasons.

Review: Beeline Velo is an excellent bike computer for me

Bike computers are crazy expensive. Garmin’s cheapest current model on their website is listed at $500, and Wahoo Element Bolt is even pricier ($530). And these are the market-leading brands.

There are budget brands, such as Bryton and IGP Sport which come in around $100-200 for the entry level device. But for some mystery reason, many bike riders seem to be OK with paying more than $500 for their bike computers. I suppose if you spent $10,000 on your bike this makes sense?

Every rider has a slightly different use case for their computer. I wear an Apple Watch, and the main thing I want a bike computer to do is record stats for my rides. So I don’t bother with a computer on the handlebars for the majority of my rides. It’s recorded by the Strava app on my watch.

A computer on the handlebars, therefore, is not very important to me. I am not interested in how fast I am going. If I am riding with the bunch and I am not dropped, then I am going fast enough. If I am riding by myself, who cares what speed I’m going?

But there is a time when a bike computer that you can view on the handlebars is indispensable. That is when you need to navigate to your destination. For me this is when I am bike touring, but also for exploratory rides around the paths and back streets of Queensland cities and towns.

I am a super-user of the website ‘Ride With GPS’, and I have literally hundreds of routes planned there, going back to 2014.

And my experience of the Garmin Edge 530 is that following GPX tracks on a Garmin absolutely sucks.

The Garmin has a habit of telling me that I am off trail, and that I should take a U-turn to return to my course. This will happen when the road or trail I am following is outside the margin of error of the GPS device or the RideWithGPS plot, but still actually following the correct trail. And this is very common.

There are lots of tricks you can try to stop the Garmin doing this as you prepare the GPS file. None of them work all the time.

I have ridden for kilometres at a time with my Garmin device telling me to make a U-turn, when I know I am still on the right trail. This is, of course, infuriating.

The display of the Garmin 530 is also configurable to the nth degree. I am a person who fiddles with their gear, so have I ever gone through and optimised the 530 to show the data fields and display items that I want? No, I tried a couple of times and it was so complicated that I gave up.

But here’s what I’ve been doing for the last couple of years. I have left my Garmin 530 in the bedside drawer, and instead I use a Beeline Velo 2.

The Beeline Velo is a smaller device, which is made by a company in the UK. It’s round, and sits unobtrusively on handlebars or stem cap. Diameter is about 45mm, roughly the size of many sports watches, even though you mount it to bars or stem, you don’t wear it as a watch.

It does not have “buttons”, instead the body of the device and the base of the device have a defined click between them, which can be done on any of the four cardinal points of the compass. The click selects a menu item or navigates to another menu item.

And the main thing the Velo does better than any other device that I have tried, is provide clear navigation.

The device has a simple but cheerful aesthetic, all curves and bright colours. It is the most visible bike computer I have ever used. Often when navigating with the Garmin I would have to come to a stop to peer at the screen to understand what the map is saying. The on-screen map of the Garmin is usually at an attempt at accuracy, which fails by being too low-res.

That is never a problem with the Beeline. The device does not attempt a real on-screen map. Instead the Beeline shows you a stylised version of the upcoming intersection, and clearly highlights the way your route is indicating that you should go. It is much simpler and less detailed way to operate, but I find the Beeline a delight to navigate with, and the Garmin was simply painful.

OK, so the Beeline is much cheaper than the Garmin 530, and you like it better for navigation. There must be some downsides surely?

Yes, there are a couple of little quirks about the Beeline.

The first is that it does not have its own GPS chip. So it needs to be linked to your phone whenever it is operating, so that it can know where it is. And that creates a drain on your phone’s battery. If your iPhone (just as an example!) is getting to an age where the battery life is already problematic, then asking your phone to also do GPS navigation duties on behalf of the Beeline will not be a good thing.

The second downside is that the Beeline mount is not compatible with Garmin or Wahoo mounts. This is I think the only major drawback to the Beeline. I think the reason the designers have not simply used the Garmin mount is that the body-base click system used for menu selection means that the base has to be shaped accordingly. But it is still the only thing about the Beeline that I would change if given the chance.

The upside to no GPS chip is that the device is low cost (relatively). And I don’t have any occasion where I am deliberately leaving my phone at home. If I am out on a bike ride, my phone comes along too. My current iPhone is doing OK on the battery front at present.

The upside of the Beeline is just the delight of using the device, especially when compared with the frustrations of navigating on the Garmin. Battery life is adequate, not stellar. It charges via USB C. The mounting system works fine, but you need the Beeline mounts for both handlebar and stem cap mounts. Of course the 3D printing nerds are onto this.

I sold my Garmin 530 at a bargain price, because I had no further use for it.

NB: I’ve owned a Beeline Velo for a couple of years, but as of a month ago I am now an ambassador for Beeline. Upshot of that is we’ve got a Beeline Velo to give away to the Bicycle Queensland members soon. What did I get out of this deal? A second Beeline stem cap mount, so I now have one on my gravel bike and one on my bike-packing bike.

Bike Shed makeover complete

I really enjoyed the process of clearing out the dead wood from my shed (two wheelie bins worth, plus one van-load to the dump / recycling place).

Here’s the “final” version. Of course it’s never final.

The 'highlight' here is the home-made stand the three-drawer tool chest is resting on. The simplest possible carpentry job, but doesn't mean it was that easy for me. Recent heavy rain fast-tracked the removal of the wooden chest of drawers that has held my tools and spare parts for about 5 years. It was never designed for the exposure to moisture that is prevalent in my bike shed.

The steel shelving is of course from the best source of second-hand shelving: Absoe.

My friend Emma gave me these three sorters full of small parts one time when she was down-sizing. Here you can see what I'm like ... if I can do anything to give future me a clue about what's stored in there, it will mean that I use a part that I have, rather than jumping online to Pushys and spending money that I don't need to spend.

Build it and they will come! Munda Biddi ten years on

The author, on a bridge, on the Munda Biddi Trail. All photos in this post are by Fiona Taylor or Emma Best. If you would like more wildflower photos (thousands of ‘em), you should contact Fiona.

Western Australia’s Munda Biddi Trail is Australia’s most amazing long-distance off-road tour.

It covers just over 1000km of riding with a surprising amount of purpose-built single track, from Mundaring near Perth, to Albany, the largest city in southern WA.

Two aspects of the Munda Biddi Trail make it an experience which sets it apart from all other long-distance bike routes in Australia.

First, trail marking. At every trail intersection for the entire length of the trail, there are Munda Biddi trail markers showing the rider which way to go. I have no idea how many markers there are. Some of them have faded over years in the sun, but it is easy enough to decipher their intent. Some of the markers are brand new, and use a slightly different colour scheme. But all of them have the same Munda Biddi logo, and are a combination of yellow and blue.

What consistent trail marking allows is a way of always knowing that you are on the right trail. Ride more than a couple of kays without seeing a marker? Then it’s time to retrace your steps and see where you went wrong. The only exception is when the trail follows a gravel road without major intersections. Occasionally there can be up to 5 km between markers, but that is rare.

Since my last visit to the Munda Biddi 10 years ago, the way-finding has further improved with the introduction of a smartphone app for the trail. This is brilliantly designed so that it does not rely on having network coverage. The app uses your phone’s GPS to locate you on an already downloaded map, and can always tell you the distance to your planned destination, whether hut or town. The app is great for peace of mind, as you can always get a reality check of what the rest of your ride for the day will hold. It even has elevation profiles, so you are prepared for the hills which are always coming up.

The second aspect of the Munda Biddi Trail which makes it stand apart is the huts. On our recent Munda Biddi ride my group stayed in eight huts (Wungong, Dandalup, Bidjar Ngoulin, Yarri, Karta Burnu, Yirra Kartta, Booner Mundak and Jinung Beigabup, and had lunch breaks in three more (Carinyah, Nglang Boodja and Nala Mia).

Our north-south adventure comprised 16 riding days and two rest days.

Hut life

Every hut has water tanks with usable water (after treatment). So this means that it is rare to go more than 40km on the trail without the chance to refill your bottles. I carried more than 3L of water at the start of most days (two 1.5 litre bottles, one on each fork blade, and one standard 750mL bidon in a pouch on the handlebars), but usually topped off my bottles at lunchtime so there was never any reason to ration my water intake as we rode. This is an under-appreciated benefit, always having access to water.

The huts also provide shelter (of course) and a toilet. There are two sizes of hut. The large ones are claimed to sleep 24, and the smaller ones could sleep 12. In either case if the huts were full that would mean A LOT of snoring, and also you would be sleeping closer to stinky strangers than most folks would be comfortable with.

When I rode the northern half of the MBT in 2014 I mostly had the huts to myself when I was more than two days away from Perth. Ten years later, at a rough guess, the number of riders attempting the Munda Biddi has maybe quadrupled? Especially in the first half of our ride, we saw multiple other groups each day. At Yarri hut we shared with a group which arrived well after dark!

At Yirra Kartta hut there were so many folks that one couple decided to be in their tent rather than in the hut. That night the hut played host to eight people … our group of four, and two other groups of two.

It’s an conundrum. There is plenty of room on the trail for more riders, but the capacity of the huts are a built-in limiter on the number of people who can do an end-to-end at any one time. We often rode for half a day or more without seeing any other riders on the trail, but if the small huts mid-journey all end up full throughout September and October, then planning a ride will become much more complicated.

Karta Burnu

Of course, I might be worrying about something that will never happen. As we progressed on our journey, we had fewer friends sharing the last few huts with us. Yirra Kartta, which is just after halfway, was the last hut we made new friends in.

I’ve been dwelling on the huts a little too long. The trail, and in particular the scenery viewable from the trail, were the stars of the journey. Let’s be clear, most of that scenery is Western Australian bush. The northern half of the MBT travels through regrowth eucalyptus forest. The trail in that section is a mix of gravel forestry road and trail built especially for the MBT.

It’s not really until after halfway through the ride that larger jarrah, marri and karri trees really make their presence felt. As we rode from Quinninup to Pemberton past giant silver karris, the trail became magical. Until then it was challenging, uplifting, satisfying, and so so so full of wildflowers. But the next level came as we rode past the Gloucester tree as we departed Pemberton, and then descended past thousands of magnificent gum trees on glorious switch-backing singletrack for three kilometres.

I’ve said many times to friends and family that what I like about bike touring is how simple it is. You get up in the morning, and the only thing you have to do is go for a bike ride. I already like going for a bike ride. So how good is life at that point? Sure, the ride might be hard or long or steep or rough. Sure, you might have an extra 10-15kg of gear and food and water weighing down your bike. But you’re riding your bike, life’s not too bad.

This is a gross simplification, of course. My mind isn’t quieted to zen contemplation just by riding my bike. There’s always some minor cause of stress, there’s always something slightly bugging you. A intermittent squeak that might be coming from your jockey wheels or your quick-release skewers or your free hub. Flies. Branches protruding into the trail. Flies. A breeze which brings the threat of rain. Heat. Cold. Flies.

The towns along the trail also have their charms. A surprisingly top-notch cafe in Pemberton. A stunningly lovely park in Nannup. A bike shop in Collie where the staff tut-tutted over the state of my bike’s drivetrain and still fixed the shifting for the rest of the ride. A workers’ club in Northcliffe where the welcoming atmosphere and hearty meals redeemed the disappointment of the rest of the town. A Filipino-influenced restaurant in Walpole. The run-down charm of the Donnybrook backpackers. The hospitality of Dale who runs the tavern in Quinninup and also lets out space in her own home to Munda Biddi riders. The busy buzz of Dwellingup on a school holiday weekend. Emus and kangaroos dominating the “main street” of Donnelly River Village.

I rode with three friends: Emma, Fiona and Ian. We had a lovely time and deepened our friendships. And even better (from my perspective at least) my better half Annette joined us at Walpole a few days from the end (as a supporter, not a rider).

The Munda Biddi Trail is a fantastic experience, and if you are a person who likes riding a bike, I recommend it to you. You don’t need to be a super skilful mountain biker (although competent bike handling would be advantageous). You don’t need to be super fit … I get dropped by the bunch every Tuesday going up Cemetery Hill, but I can ride all day at a steady pace, and so can you.

Let me know if you need some encouragement or advice about the right sort of mountain bike for this ride. Always happy to chat about what the kids these days call “bikepacking”. I’ll see you at the next Coffee Outside.

State of the stable 2024

This is a regular ‘feature’ on the Internet BOB. So having prepared this on my Craft writing space, I thought I would share it here also.

Commuter/tourer. Main ride to work, also main machine for light or credit-card touring. 1994 Shogun Alpine GT, converted to 650B. Fork by Joe Cosgrove. Downtube logo says ‘Sholto’ in memory of a friend. Love this bike and ride it just about every work day.

Road bike. Frezoni made by Joe Cosgrove, a framebuilder who lives about 2 km from me in Brisbane Australia. Joe’s primarily known for doing the paintwork on Llewellyn bikes.

Cyclocross/gravel bike. 2011 Cannondale CAAD-X. Just a couple of years before cyclocross bikes switched to discs. I now run a 1x setup, and it has mini-V brakes rather than cantis.

Bikepacking bike. Based on a 2011 Specialized Carve aluminium frame. Currently has a Trifox carbon fork. Fantastic device for long steady days on a rail trail or a back road through the bush.

Mountain bike. 2016 Kona Precept. 27.5 wheels, dual suspension. Cos singletrack is the best fun.

Folding bike. Brompton. Cos every home needs a Brompton.