The rain was just starting as I left work to ride down to that start of this club event. It was also rather twitchy riding in blustery wind, so the signs weren't great! When I got down to sign on, I found a clutch of riders sheltering from the rain in the lee of Tony's car discussing whether or not we should ride. Some did not, but a core of nutters (including me) decided we'd go ahead.By the time we lined up at the start, Anthony B. had decided that having ridden round the course he wouldn't start - he reported the roundabouts may be a bit slippy. Another rider joined him in not starting, leaving the rest of us entertaining all sorts of doubt. However, at the appropriate time, I found myself launching off up the road in the a stiff and blustery wind. This had the effect of making my front wheel really twitchy. Nevertheless, I pressed on to the first roundabout which I negotiated with some care, given Anthony's warnings - and the fact this one's ridiculously potholed. For much of the rest of the event, I was mostly either whizzing along with a bit of wind assistance or grovelling along trying to control the bike.The only truly alarming moment came when I was crossing the last roundabout (i.e. the first one in reverse) and I hit a pothole. This threw my front wheel to such an extent that I thought I'd bought it! Somehow I managed to regain control and made a final effort to the finish. Third place with a paltry 23:50.Here's the Garmin trace, and the full results at the NBRC website.

This was only my third '25' of the season, and on the F1B/25, the somewhat less flat version of the F1. This course heads south from Tempsford to turn at the Baldock interchange, just where the A1 changes into the A1(M).A nice enough morning heading out to the event, but by the time we reached the race HQ at Tempsford hall, the skies had clouded over and light had fallen a bit. Fortunately, by the time we started, things had improved a fair bit. As regards the event itself, it was marred somewhat by a stiff sidewind, which at one point threatened to overturn me! I had a pretty clear run through all the roundabouts.There was an annoying diesel spill at the miniroundabout near the start, but I don't think it caused any trouble with the riders.All in all an uneventful ride - I finished in 59:49, and went home to feed Tony blueberry pancakes!Here's the Garmin trace.

Can anyone explain why tubeless tyres are such an advantage for road bicycles?  The push towards tubeless tyres is exemplified by this review of Easton tubeless aero wheels at Velonews. Early in the review, we see this:

Cars, motorcycles, and mountain bikes use tubeless clincher-style tires almost exclusively. Road bikes are one of the few wheeled vehicles that still rely on tubes to hold air. And tubes go flat.A clincher rim with a solid spoke bed (and a few design tweaks to help the tire bead seat against the rim) is capable of running tubeless with minimal changes. A special valve, a tubeless-specific tire, and a little sealant are all that is required. Nipples thread into the inner diameter of the rim. And if anything goes wrong with the tubeless setup, these wheels can be used as standard clinchers as well.The EC90 Aero 55 clincher was designed to run tubeless without the additional headache and pieces involved in converting a standard clincher. More shallow aluminum (read: not aero) road rims wheels are adopting this construction, and the EC90 Aero 55 is the first aero wheel to do so. Tubeless specific tires are thicker than standard tires, so rolling resistance is a factor when deciding to use a tube or tubeless setup for a race, although practically eliminating flats is a very appealing advantage.While tubeless road wheels haven’t yet exploded as they did for mountain bikes, nearly 30 tubeless tires are currently available and the number is growing.

I really wasn't aware that mountain bikes almost exclusively use tubeless tyres - is this an American thing? Apparently the fact that tubes puncture is a reason to go tubeless - but to puncture a tube, the tyre has to be punctured first. And it seems as though the response to puncturing a tubeless tyre is to put a tube in, and that'll presumably be mucky with the sealant that's needed!  Oh and only a few tyres are available, and they tend to have higher rolling resistance.I can't help feeling that tubeless road tyres are a solution in desperate need of a problem! On the other hand, I presume Easton figure there's a market out there for high spec tubeless wheelsets.

Rather a nice evening for a time trial - sunny, but not too hot, and with only a fairly gentle wind. Unfortunately I felt pretty grotty and found the ride quite tough!I set off from the start feeling reasonably OK, made it through Beachampton OK, but fell apart a bit as rode up the climb to Nash. I had the added impetus of knowing my colleague Katja, on her second race on her new TT bike, was starting a minute behind me! I was unable to read my bike computer, due to sunglasses an age-related vision issues, so mostly I was riding on feel. This wasn't really good enough, as all I was aware of was feeling really rubbish as my speed dropped away on the climb to Nash. Once up there, things got a fair bit better.I was doing a good job staying on the tri-bars round the bends and corners. Well, mostly. I did descend well from Nash through Beachampton, but lost a bit of speed on the twists and turns over the last few miles to the finish.The event, overall, was a bit of a let-down after last week's ride at Astwood. I finished fairly low in the pecking order with 28:32. Full results at the NBRC website.Tony and Amy were out on the tandem to see the race: I rode back part of the way home with them (they did seem to be going rather fast for my tired legs).

I was quite pleased that the current heatwave abated slightly for this evening event on the Astwood circuit. As usual, I lined up at the start yawning widely and proclaiming that I was too tired and hungry to do a decent ride.A few minutes before I was due to start, I had to nip into a field for a nature break. Unfortunately, upon emerging I found my Speedplay cleats had clogged up with mud and I had to spend some time poking the mud out with a stick retrieved from the verge. This was rather disconcerting as even after I dug the mud out I found that unclipping from the pedals was most erratic.Anyhow, I started as number 4 and pretty soon after starting, found the outward leg to Chicheley rather twitchy and difficult due to the wind. Once round the turn things got easier, and I began to entertain hopes of a sub-24 minute ride. By this time, I'd caught one rider and had a second in my sights. I redoubled my efforts and pressed on to catch the second rider. In these evening events, I find I'm unable to read the smaller numbers on my bike computer (a combination of vibration, low light, and needing reading glasses). I was able to make out the elapsed time, and I figured I'd need to put in a serious effort.By the time I reached the final descent before the climb to the finish I could see the last of the riders in front of me, and I threw everything into the effort needed to catch him. This I managed, just before the finish, with a final effort that saw my heart rate reach 203bpm! Gagging and gasping, I slumped to a standstill, hoping against hope I'd got under 24 minutes...and when the results were sorted, I found I'd done a 24:00 for third place.I was reasonably pleased with that result, which may just be showing some signs of a recovery of form. Here are the results and the Garmin trace. 

We had a weather forecast of thunder and lightning for this event. On the day, however, it was another very hot afternoon, that mostly made me want to loaf around instead of exert myself! Tony came round to my place, and we rode over to the race HQ at Lidlington. When we got there, we were told by a timekeeper that roadworks on the course had necessitated a last minute change to a course thought to be about 7 miles. Instead of turning at the second roundabout (Wootton), we'd turn at the first roundabout (Marston Moretaine), retrace to the foot of the hill then turn left along the wonderfully named Sheeptick End, finishing just before Lidlington level crossing. Supposedly, this was about 7 miles (actually I made it about 6.5 miles). Another amusing factor was that this was a 'flying ant day', when all the new queen ants were emerging. I could hear these beasts bounding off my aero helmet, and see dragonflies and swifts zooming around eating them!Off to the start, and I did my best to warm up. I cruised up and down Sheeptick End, until I was confident I knew where the finish was. This section needed a bit of care, as there are several fairly sharp bends with large parked vehicles such as camper vans. The start was a little alarming, as the pusher off seemed to be having a little difficulty holding my bike, but soon enough I shot off down the starting hill. The outward leg wasn't too bad, and I was holding a decent pace to the turn. Unfortunately, the turn was affected by a line of half a dozen cars and their drivers seemed to be a little alarmed by the rider ahead of me that I was about to catch. After negotiating my way through that, I passed the rider and set off back along the course, dodging potholes as I went. The surface of the road seems to be deteriorating quite quickly.The return leg wasn't so quick, and I was quite relieved to reach the little rise before turning off onto Sheeptick End. This lane was quite quick at times, quite slow at others, but with a rather rough road surface. I eventually crossed the line in 15:02. The race was over, seemingly not much more than a warmup!Here is the Garmin trace.

This was another warm and humid evening, with only a gentle breeze to bother the riders. We had a reasonable turnout of 14 solo riders and one tandem crew. I was what you might call well-rested, having been off the bike for a few days because of work commitments, so I was keen to gauge my fitness against my peers. I ended up as the penultimate starter, with only Tony P. behind me. So obviously, the fear was that he'd catch me embarrassingly early in the event.My start was pretty uneventful, and was pretty quick. Approaching the first roundabout, I was aware of a car coming up behind me, and took a conservative line through the roundabout. Unfortunately, this really slowed me down as I had to negotiate the huge potholes somewhat carefully! From there on, things did get better. As usual, the climb up to the main dual carriageway was a bit slow - I think the wind direction had a bit to do with that. Onto the dual carriageway, and my initial speed was around 30mph, which was encouraging. Unfortunately, this soon dropped away as the gradient flattened and the breeze took its toll. I began to get a little worried! Coming out of the turn, I could see Tony, who seemed to have gained rather more on me than I had hoped.Once round the turn, things got a bit quicker, and I felt a bit more up for it. I had no real issues negotiating the last roundabout crossings, and finished in 23:20. This was somewhat slower than my last ride on the course, but as far as I could see from looking at the results, everyone seemed to have gone a bit slower in comparison. The traffic levels seemed OK this evening, but several riders said they'd found that cars had been passing a bit close - this was certainly my experience. Nothing dangerous, mind, but it does remind us to keep our eyes open!Here's the Garmin trace for the event.On Saturday, I'm off to ride the Norlond '10' on the F15/10. Thunderstorms are forecast, which may liven things up a bit!

I think this is only the second time this year that I've raced on this course, owing to illness, injury and pressure of work (it takes a while to ride over from work, so late meetings are quite disruptive). This event was true to form, my back pain had returned, and I only managed to make the event because a new colleague at work wanted to ride and offered me a lift to the event. The lengthy period of hot and sunny weather continued, with the event being run on a hot and sunny evening. There was a rising head wind for the closing section, but really, the conditions were pretty good.I was quite a late starter, and found I was feeling pretty good as I set off. By the time I reached Beachampton I thought I was going OK - indeed I only felt like I was in any real difficulty at the steepest part of the climb up to Nash. On the other hand, this is far from my favourite course, and it's particularly unforgiving for riders who are a little overweight (as I am) or who have a niggly sore back (as I did)! I could see most of the riders on their return leg as I headed out - they were whizzing back down the hill looking for the most part like they were enjoying themselves.Riding through Nash, I could see there were kids on bikes in a schoolyard. After I turned (no issues with traffic or farm animals), I was concerned to see people, including the kids, wobbling about in the road. This brought back memories of the Icknield '10' on the Brogborough course (F15/10) last September, when two small kids caused me to come off at speed. On this occasion, everyone kept their line and I safely negotiated the twisty road through Nash and started the descent. This was quite quick, and I was still feeling good as I passed through Beachampton. Over the rise after Beachampton, and into the last few miles of twisty lanes and I felt I was flagging a bit. Indeed, I crossed the line with 28:18. Not bad I suppose, given my recent performances, but I'd have liked to do a '27'! Full results here.  

This was a blisteringly hot day - according to Tony's car's thermometer it was 29 degrees (my Garmin registered a maximum of 33 degrees during my ride) - and with a stiff old breeze from the north that greatly exceeded the 7mph draft that was forecast. It was my first outing on the E2/25 for a year or so.Driving out there, it was clear that the conditions were going to be 'interesting', due mostly to the heat, but also the wind. We collected our numbers from the HQ and retired to a lane near the start. Tony was off slightly more than an hour before me, and I found what little shelter I could beside a hedge and waited. After a while I rode up and down the lane, but it was so-o-o-o hot! By the time I rode off to the start, I'd drunk almost everything I'd brought (clearly insufficient!) and eaten a banana as I was feeling a bit hungry. I reached the start line a bit early and waited in the shade of a tree while talking to one of the women riders (I was starting three minutes after the women in the race). Passing riders who'd already finished observed that it was pretty tough on the return leg.The start was pretty straightforward, though I always get nervous when the pusher-off actually pushes me off, as it always feels like I'm going to depart in an unfortunate direction! But everything was OK as I zoomed off down the sliproad onto the A14. The breeze instantly had its effect, and indeed the outward leg was pretty quick all the way. Coming out of the turn, I was caught by #80 for three minutes, then at the bottom of the slip road by #78 for one minute. No-one else passed me, though I did catch some of the women riders.I found the nagging head wind a bit tough, especially on the slight uphill gradients (the course is actually really flat for the most part). I was also getting very thirsty, with what little saliva I could muster gluing my mouth up! So it was something of a relief to see the finish line looming! I finished in 57:02, which isn't too bad given my season so far.After the race, we returned home for home-made pizza and Leffe, which rounded off a hot, sticky and reasonably successful afternoon out.Stats-wise, I spent most of the race at rather a high pulse rate, often in excess of 190bpm. I think this reflected both the temperature and the effort, though the power recorded by the Powertap wheel was rather lower than I'd expected. All these data and more in the Garmin trace! 

One of the main reasons for buying a new tandem was an improvement in transportation. Not, I add, in transporting us and our luggage but in transporting the tandem by car. In the UK it's pretty much impossible to travel by train with a tandem, so each time we plan a cycle tour, we need to allow for getting the tandem to the starting point using our car.

After a few days of really hot and sunny weather, it came as something of a shock to arrive at Astwood on an overcast, cold and windy evening. This event was the annual two-lapper on the Astwood circuit, and I think I was still feeling recent bike rides in my legs. In any event I really suffered in this event, and in particular I found the headwind in the second half of each lap rather more trouble than I should.So, essentially, I went like a bag of spanners, finishing with 51:20 or thereabouts. Not much more to say really!The Garmin trace is here.

This was forecast to be one of the, if not the, hottest days of the year. It was also our first long ride on the new tandem - a 63 mile trip involving some steep gradients, notably the 10% climb of Tram Hill that takes one up to Brill itself and so representing a test of gears and brakes.  The ride itself was something of a shakedown ride, being an opportunity to make sure that the bike was spot on in its setup for both riders - very important, given that the intention is to tour on this bike.

Despite being a rather overcast evening this event saw a good turnout of riders - 21 solos and two tandems, I think. For my part I was feeling a bit tired after some heavy commitments at work and was  a little concerned that my performance would reflect this.I had hoped to get my time for this course down to the mid-23s - which speaks volumes for the state of my 'racing' season thus far! So it was with some apprehension that I lined up to start. To add further concern, the traffic in the lane where we meet seems to have increased substantially since the McDonalds opened for business.The race itself was rather uneventful - the usual caution in negotiating the first roundabout; the desperate attempt to keep a reasonable racing pace on the gentle climb between the secnd and third roundabouts; avoiding the numerous potholes on the dual carriageway. But I felt pretty good on the whole and, though my ageing eyes didn't seem able to resolve the smaller digits on the bike computer, I was reasonably hopeful that I wouldn't disgrace myself. Geoff Bunyan was captaining a tandem a minute behind me - they came past on the return leg in good and smooth style. They didn't make much headway as the road rises at the end of dual carriageway section, but one the road descended towards the finish, away they went.You can see the results at the NBRC website. I ended up with 22:42, which I was quite pleased by. I was riding my Powertap Hed Jet disc wheel, so I collected more power data. Here's the Garmin trace: 

The forecast for this event, unusally for this point in the year my first on the F1, was for sunny conditions with a light breeze. There was a light mist as we set off for Tempsford - but this lifted as we approached the F1. We did have to make a slight detour to fill the car with petrol! Unfortunately the wind did rise considerably, meaning there was a rather stiff cross-wind that promised to make the return leg a bit tougher than expected. However, I was keen to really kick-start my somewhat belated racing season. This was my first '25' of the season, rather astonishingly.After the usual start line banter, I set off along the minor road up to the flyover - here a white van man decided that the roundabout was an appropriate place to pass me, driving rather too close for comfort. Down the slip road to the A1, I picked up a bit of speed. Traffic was pretty light on the morning, which was rather good. But it was clear that the southbound legs were going to be a bit tougher than northbound. Turning as the Sandy roundabout, about 12.5 miles at a decent speed faced me, with the only possible hitch being traffic at the Black cat RAB, where I got through with only a slight drop in speed due to giving way to traffic heading off towards Bedford.I reached the Buckden RAB without too much trouble, and turned to head south. With the cross/head wind this was a bit harder, but not actually horrendously so...until the 19-20 mile mark, where I found the combination of a slight gradient and the wind dropped my speed to around 20 mph. But I soon picked the speed up, crossed the Black Cat in decent style to finish just outside the hour. I rode back to Tempsford with the guy who'd started a minute before me - he was a bit cross at his choice of fixed gear (he'd been misled by the weather forecast).I had to leave Tempsford before the results board was populated with data, but I estimated my time as about 1:00:04 (see Garmin trace below). A bit frustrating not to get below the hour, but rather better than I'd expected, given the paucity of racing and training this year. I was pleased that I seem to have finally got rid of my bad back - I had no trouble riding in the aero position. Onwards and upwards.Roadkill avoided: two deer, one cat, one pigeon.

Astonishingly, two weeks after I placed the order for the new tandem, I received an email notifying me that it had been built and was ready for dispatch. I say 'astonishingly' because I'd been led to believe it would take about 6 weeks for delivery. And so I took delivery of an enormous and unwieldy box.

This event was on a warm but heavily overcast and very humid evening. Still, conditions seemed to be enough for a decent turnout! I felt particularly sleepy before starting, though as usual sleepiness soon dissipated as my start time approached. For a change, it was a rather still evening - which was good.I was quite optimistic for the event. However, I hadn't raced for a month, and training had been interrupted by a brief holiday in Yorkshire followed by a work trip to Italy. While both those were fun, it did dent my training a bit, leaving a question mark over this event.As it turned out, the event was something of a mixed bag. I shot off from the start reasonably well, but my speed (as far as I could gauge it with my ageing vision) soon dropped off alarmingly, and this on parts of the course I'd normally be quite quick on. This pattern was repeated all through the event, with my general sensation being that of riding through a viscous substance. Perhaps that reflected the humid conditions.I finished with 24:42 which, while not a great time, was around a minute faster than my previous outing on the course.Here's the Garmin trace. 

We have had our Dawes Super Galaxy tandem for around 20 years, and it was second hand then. Of course in the intervening time, most of the components have had to be replaced due to wear or occasionally upgrades (see Trigger's Broom, and Theseus' Paradox). Indeed, as far as I can recall, the only original components that remain are the front seat pin, rear handlebar stem and the Arai drum brake. Also, two of the frame tubes were replaced after an incident when the front top tube had a bit of an accident involving a wooden gate post in Durness. The bike has served us well over the years - see the various accounts of cycle tours accessible via the menu above. For the past seven years it has been our main vehicle for commuting to work.

A few years ago, I decided to have a play with using a power meter in my training. Because I wasn't too sure about how useful I'd find this, I went with the cheap option - a Polar CS600X with WIND speed and power/cadence sensors. This worked reasonably well - at first - but I've had no end of problems with reliability. Mostly this seems to be because there are several essential components in the WIND power meter system: the power supply, the chain tension sensor, the cadence sensor and the chain speed sensor. If any one of these elements doesn't work, you see no power or cadence reading, and there is virtually no diagnostics available to figure out where the problem lies (except if there is no power). And what is particularly annoying is that the setup can work fine one day, and the next (with the bike not moved from the turbo trainer) it doesn't the next day.Anyhow, enough was enough, and I decided to move to one of the more 'serious' power meter systems. I was looking for something that could be moved from one bike to another, that used ANT+ (I am so fed up with the Polar proprietary system), and that would be reasonably robust. I thought through the following options:1. The Polar Pedal system. Not ANT+. Seems from reviews that the pedal installation is fiddly so not easily switched from bike to bike.2. The Garmin Vector system. Despite winning a product of the year award from a bike magazine a few years ago, this hasn't been released to the public yet and remains effectively vapourware. It also uses an undesirable (to me at least) pedal system - Look Keo - and may well be prove to be a fiddle to install the pedals as with the Polar system. At least it is ANT+. I should add that I've not got anything against the Keo pedals, but I've no desire to add Keos to collection of pedals that includes old-style Look, Campagnolo Pro-Fit, Shimano SPD and Speedplay!3. The Brim Brothers system where the power meter is within the shoe plate - seems attractive, but what's the release date? At any road, the system seems to use Speedplay shoe plates.4. SRM - the industry standard crank based system. Clearly the system to have above all others, but it's expensive and not easy to switch between bikes. It is ANT+.5. Other players come and go...6. Powertap. This is what I plumped for. I went for a Hed Jet disc wheel with a Powertap G3 hub. This is a spoked wheel with a permanently bonded carbon fibre cover bonded to the rim and hub. It seems to be a robust construction (though the skin is pretty thin and flexible), and I am proposing to use it while turbo training as well as on the road.So far, I've had the device for a few weeks, and I can make a few observations. Firstly, the ANT+ system is a godsend, particularly as it relates to the Garmin 500 computer that I use. I've only used the wheel for a couple of events, as bad weather and a combination of leave and working away from home have interfered. I can observe that typical wattage is considerably lower than recorded on the old Polar system. But that's kind of what I expected, and I am only using these data internally as there's little point in comparing with other riders or power meters. I'd add that the Garmin 500 offers quite a bit of versatility in how data are displayed. I've decided to set one of the screens to include Power, Power (3 sec average) and Power (30 sec average). This offers not only an instantaneous power value, but a rather smoother and stable figure. The Garmin's data are easy to import into Golden Cheetah.As a disc wheel, the Jet disc is different to disc wheels I've used in the past. My first disc was a Hed with a screw-on hub - this had a rather cardboardy feeling carbon structure and was hollow and symmetrically lenticular. This disc was sold and replaced with another version with a cassette (currently adapted for fixed gear use). I've also got a Corima disc, which appears to be a foam core with carbon skin, and is flat-sided. The Jet disc wheel is essentially a spoked wheel with a thin carbon sheet covering the spokes - sort of a fairing. It has therefore got something of an asymmetric lenticular appearance because of the wheel's dishing. The skin feels a bit flimsy, particularly around the valve hole, but has stood up to use rather well so far. The skin is firmly attached to the hub and is bonded to the alloy rim. I chose a clincher version, as I've pretty much abandoned tubulars for all but the best of road conditions - around where I live I was suffering too many punctures in recent years. I imagine that a 'normal' Jet disc would be quite light though with a Powertap hub, even the lighter G3 version, the weight is a little hefty.Expect a longer term review at the end of the 2013 season.

Another sunny evening greeted the 19 riders who turned out for this evening '10'. On the downside, the wind was blowing quite strongly! The event was also the NBRC Championship '10', for which the six NBRC riders were eligible.As expected, the section leading up to the dual carriageway was a little twitchy with a gusty side wind, but once on the dual carriageway, this translated into a wonderfully assisting tailwind - most of us took advantage of this, but the rider in front of me, who was riding a medium fixed gear, seemed to be twiddling away like a demon! The road surface on this very new road has suffered recently, with numerous small but deep potholes having appeared. I contrived to ride through one of these, which didn't do any damage to the bike or to my ride, but wasn't very nice! I must learn to steer a bit more accurately.Of course, it came as no surprise to me that the return leg was really tough, though once off the dual carriageway the going was quite a bit better, albeit with several severe twitches as I passed gaps in the sheltering hedgerows. I finished with 24:09 - not a brilliant time, but quite a bit better than my previous outing on this course when I recorded 24:40! Once again I survived without back pain, so I guess that is past me for the time being.  On the whole, I'm a bit more optimistic about getting my training and racing back on an even keel.

Rather a nice afternoon for a time trial - dry with a gentle breeze - but rather cool. I rode out on the time trial bike, newly equipped with a Hed Jet disc wheel with a Powertap hub. After a week fighting off a cold, I wasn't really feeling particularly optimistic, particularly given the last few months' lack of training, but I did hope to knock out a mid 23.After bizarrely wishing the timekeeper 'good morning' (it was 3.32pm!), I left the start line quite briskly. Unfortunately the traffic at the Billington roundabout was busy enough to slow me appreciably - I then had to accelerate back up to a reasonable speed again. Other than this, the outward leg was fairly brisk and I felt pretty good. Unfortunately, I got stopped again by traffic at the turn. Worse than this, at a couple of points in the return leg I completely lost the plot (mentally) and found myself allowing my speed to drop far too much.After a clear run through the second crossing of the Billington roundabout, I crossed the line with a pretty poor 23:59. Still, it's my fastest '10' of 2013 - maybe things are looking up...Here's the Garmin trace, below the fold: