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We did it! I break the 24hr Unicycle World Record 455.2354km

If at first you don’t succeed, talk your family into letting you do it again!

Back in November, I broke the 12hr record but had to abandon the 24hr record after 315km because of high winds.  With Wellington famous for this, and an unseasonably cold and windy start to summer, we were tracking the weather on multiple apps, trying to get a 24hr window with a wind speed below 20km/hr.  On the 18th Jan, we finally had a day where it looked like it would work.

We attempted the record at Newlands Intermediate again. The track is 390.76m, so I would have to ride 1162 laps to beat Sam Wakeling’s record of 453.8km.  

It turned out to be a beautiful calm day. Arthur and Lynn Klap were on the field setting up, my wife Anna came down with tents and gazebos, my mum turned up to help with the kids.  

Bruce from Barefootsports laid the timing mats and equipment which goes beep every time I ride over them. Boy, am I going to be sick of this sound at the end!  Two timing mats and two timing chips went down to be doubly sure.

The plan was to cruise at 24-25km/hr for as long as possible, before an expected drop in speed as I became tired.  In training, I’m a bit slower than I was in November, despite trying to keep my fitness up.  Without the wind though, I was confident I could pull it off.

I started the GPS computer, turned on Strava on my phone.

3..2…1…beep!  I get started just after 8.23am, and I would be riding for the next 24hrs!  

I felt more comfortable than my previous attempt immediately. Without wind, all effort goes into propelling yourself forward, instead of making micro-adjustments to stay upright.

After just 2hrs I was consistently lapping sub 60s laps, keeping my speed above 24km/hr. This was a comfortable speed and I was smiling.

The field was getting busy. Old school friends, locals, dog walkers, passers by, support contingent all came to see what was going on.  We had 3-4 families set up a campsite to keep our kids and me company.  My in-laws Peter and Margaret came in their house bus which would double up as shelter and hot food stop later. 

60km in 2hrs30min…hardly felt like I’ve been riding!

80km in 3hrs22min…still feeling good

In fact, I felt so good, I didn’t dismount for 150km (6 1/2hrs)!  I briefly thought about unofficially breaking the longest continuous ride record (without feet touching the ground), except I couldn’t remember what it was!  It turns out Sam Wakeling rode 169.90km before he dismounted.  Anyhow, it was more important to keep the body in good condition than try for a secondary record.  I had successfully taken a bottle of chocolate milk on-the-fly from Richard, who was adept at passing food and water after November’s record attempt.  

It was getting warm and I felt if I didn’t have a break it would affect me later.  It felt hotter than 20 degrees with sun reflecting off the concrete, and the breeze also picked up (20km/hr), and would stay that way from 1-5pm.  Those were the hardest laps, as I don’t do well in heat.  While the average wind peaked at 20km/hr, the odd 30+km/hr gust almost took me out and required correction. 

I really need a butt massage!  Thankfully my obliging wife was there to squeeze the cheeks at each stop.  Things were getting sore, but the glutes were the first to feel it.

I decided I needed to stop every 90min.  There is only so much food you can take on board while riding, and it actually slows you down without giving you a break to stretch muscles. On the other hand, I knew if I stopped for too long the muscles would seize up.  

By 5pm I was starting to tire.  It’s amazing how filthy you get from riding in circles. I was caked in sweat, sunscreen, snot, chocolate milk, powerade, and vomit. My stomach wasn’t emptying, and I felt better after bringing some of it back up.  I blame the heat and probably not enough hydration early on. 

At the 12hr mark, I had gone past the 252.04km record I broke in November, hitting 660 laps (257.90km). A new 12hr world record, but not my focus this time!  I hadn’t surpassed the old mark by much, but felt relaxed and in fairly good condition.

Greg turned up with the amazing Hirepool light towers he promised. I was expecting two, he turned up with three! We’re going to have a night time stadium!  No need for unicycle lights.  It would be dark at 9pm, so I was looking forward to riding in cooler night air.  

When the lights came on, I realised how impossible it had been to attempt a record without them.  Going fast means you must be able to see, especially on a unicycle where micro-adjustments are needed to stay upright.   They weren’t just bright, but gave consistent lighting around the track, instead of coming in and out of darkness with my DIY lawnmower-battery lights.  The only near mishap came when a couple of baby hedgehogs crept across the track, partially hidden by shade from the grass. 

Despite feeling really positive, my speed suddenly dropped, stretching my lap times out to 80s seconds.  I wasn’t sleepy. Perhaps the diurnal trough was kicking in.  

After being told to ‘Pick up the speed!’ by Bruce, I immediately stepped it up for an hour or two, then slowed again.  At this point I realised it was muscle stiffness- if you’re not loose you can’t spin on the downhill or carve your way around a turn.  My speed would pick up each time I stopped for a stretch, so I took speed as an indicator of when I needed a rest break.

At 320km, I was about 50min ahead of Sam Wakeling’s record time, as he hit this mark in 8hrs 20min.  I felt comfortable with this buffer, but Bruce was concerned- my speed had been dropping significantly.  

I pushed hard through the night, taking breaks when I had to, speeding up again, then slowing as the muscles became stiff.  I was doing the numbers and getting worried.  The speed had dropped to 17km/hr, with a lot more effort than when I was riding 24km/hr. 

My rest breaks became shorter and more tense- pee, butt massage, hot noodles/pizza, chocolate milk/powerade. I needed Shane and Bruce to help remount. 

Hopefully the cortisol would kick in soon….and it did. At 5am, I felt a surge in energy. It was starting to get light and my speed picked up.  

The last 3hrs were tense. I had about 45km to go, and I was riding about 16-17km/hr. That leaves little margin for error or rest breaks. 

2hrs to go…still cutting it fine.  Anna and Bruce were telling me not to ease off….

1hr to go, I had 14km left and I was going at 16-17km/hr. It should be enough. Legs stiffening, speed slowing…maybe time for a quick stop and stretch. 

Arthur Klap was giving me a lap countdown- only 33 laps to go!  Seems like a lot!

30min…looking on target

ARgh!  I had a sudden drop in speed with 5km to go.  Quick stop, stretch, and back riding but still going slow.  

In fact, I wasn’t totally convinced I had the record until the final lap, which went by in agonising fashion!  Beep! I did it! 1162 laps!

Still 5min to push it further.  Perhaps time for 3 more (very slow) laps.

I crossed the timing mat at 1165 laps with 30secs to go, but went to do another lap for the IUF partial-lap calculation. Not that it mattered- my legs were gone, I ended up coming off midway.  After remounting, it was probably the slowest riding lap, so adds little to my total distance. 

Done!  

Total laps 1165 x 0.39076m = 455.2354km.  I beat Sam’s 2007 world record by a skinny 1.4km

The track was not completely flat. Strava says there was 15km of climbing, although likely an overestimate.  Still, it felt like a 2-3% climb each lap, so perhaps I’ll measure it later to see if it qualifies as an Everesting attempt!

My Feb 2005 world record mark was 378.7km, so after 20yrs I went a further 76.55km.  Imagine what I’ll do when I’m in my 60s!

I had an amazing crowd at the finish, but babbled somewhat incoherently.  

What I meant to say is, I couldn’t have done it without all your support and encouragement!  

Thank you so very much!

Pictures and video to follow, but plenty of footage on the Facebook event feed

If you feel encouraged or inspired by this, please consider supporting my charity fundraiser for medical research, via the Malaghan Institute

Hirepool light towers

It’s amazing how people are keen to help when you try to do something a little crazy.  During my first 12/24hr record attempt in November, I had friends from school whom I hadn’t seen in years, others who travelled from far away; people who know me as well as those who don’t, all pitching in.

One of those is Greg, an old school buddy (actually I was in his sister’s class at Newlands Intermediate), who turned up and supported me through the night.  

Anyway, the point of this is that Greg is a manager at Hirepool, one of those awesome businesses that support local events. They were a major sponsor of Unicon 15, the unicycle world championships, when we hosted it in Wellington 15yrs ago.

In November, it was incredibly difficult to mount and ride in the wind, particularly after dark.  Even with a 1400 Lumen light, it was not the ideal riding situation.

For the upcoming attempt, Greg talked his company into lending out these awesome lightowers.  It will be like a stadium, with 9m high floodlights lighting up the track.

Behold!

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12/24hr World Record Attempt…again!

Back in November, I attempted the 12 and 24 Hour Unicycle World Records. It was a super windy day but I succeeded in breaking the 12hr record with a distance of 252.04km. Unfortunately, I had to stop riding after 16hrs, completing 315km, due to the conditions.

We are doing this again on the 11th-12th Jan 2025, but will postpone either to the next day, or the following weekend if the weather doesn’t look favorable.

This is the facebook event page for updates before and during the attempt:

https://www.facebook.com/events/905905154864141/?active_tab=discussion

Many thanks to all my supporters, friends and family, most of whom are back again to help me achieve this!

Interview on TVNZ Breakfast

I was interviewed on the TVNZ Breakfast show about my 12 Hour Guinness World Record:

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Continuous glucose monitoring (CGM)

One of the benefits of working in the medical industry is that from time to time, you get to play with some cool toys.  Continuous glucose monitors (CGM) have been around for a few years.  They are now funded for Type 1 diabetics in NZ, so the local drug company dropped some off for my doctors and nurses to trial for 2 weeks.


In the past I’ve looked at heart rate monitoring, power monitors etc.  Most of the time, I don’t find it interesting or useful to continue.  I was glued (literally!) to my CGM monitor for 2 weeks!  I’m not diabetic (my HbA1c is 33) but it was fascinating.  Diabetes is classified as HbA1c 50 and above.  However, this doesn’t reflect day to day, or hour by hour fluctuations in blood sugar.  


My CGM is a basic Freestyle Libre 2, made by Abbott.  It attaches to your arm via a thin filament that comes out of a plastic disc.  Each disc costs NZ$106 and lasts for 2 weeks.  It runs on bluetooth, and gives you glucose readings each minute on a phone app.

CGM arm 2 CGM arm


The eye opening thing for me is how variable my blood sugars are after meals.  If you do a traditional finger prick blood sugar test after eating, you have no idea where on the curve the result sits. The blood sugar could still be going up, on the way down, or yet to rise!  I can see how useful it is for Type 1 diabetics, because they titrate their insulin to the blood sugars result.   Type 2 diabetics tend to start on oral agents, but if they are on short/medium acting insulin, it would also be very helpful.  It also provides an idea of how particular foods affect their blood sugars.


Back to this being a unicycle blog….of course I had to try it in training! The other big eye opener for me is the effect of exercise on blood sugar.  It completely flattened my sugar peaks.  
This is a day showing sugar peaks with meals.  I missed breakfast, and was mostly sedentary, seeing patients in clinic:

11 Oct

During my 2 week trial, I ate high carb and low carb meals, high GI and low GI, and they all resulted in a similar rise in blood sugar.  So much for the glycaemic index!


This is what happens when I exercise- the day I rode 265km for 12hrs (0800-2000hrs) for my practice 12/24hr record

12 Oct

I had oat porridge and coffee at 7am for breakfast.  My ride started at 8am, just when my sugars should be rising.  Instead, it remained flat, and stayed that way for 12hrs.  During this time, I ate a large cheese sandwich, 100g of chocolate, 3L of chocolate milk, 1 muesli bar, 1 apple, 1 1/2 meat pies.  They did nothing to my sugars. It was not until I went home, had a shower and dinner, that my sugars started rising.


The same effect happened on other days- if I exercise within an hour of eating, my blood sugar remains very flat.  The effect even lasts into the next day, when the sugar peaks are at lower level than I would expect.
Take home message- eat what you like (within reason), but exercise after eating to keep sugars low.   How this translates into long term health for non-diabetics is hard to know, but it seems to make the insulin/glucagon balance more effective.  That can’t be a bad thing.  


In terms of performance, I haven’t used it enough to make a sensible conclusion. I did notice a power drop after I had lunch (approx 12pm) during my 12hr ride, but my average sugars also dropped from the low 6s to the mid 5s.  Perhaps I didn’t eat enough, or there was a surge of insulin that drove the sugars down.  I might just have to do another CGM trial to find out!

Unicon 21

I am at Unicon, The Unicycle World Championships and Convention, held every 2yrs.  This is the 21st edition, in the town of Bemidji in Minnesota, USA.  If you are a unicyclist, Unicon is something you must attend at least once in your life!    The 12 day event showcases multiple disciplines within unicycling- from road racing, track events, trials, artistic freestyle, street and flatland, unicycle hockey and basketball, mountain unicycling and much more.

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Not only is it our world championship, but it’s also our world convention. It’s a chance to meet riders from different countries and take part in workshops, social events and rides.  With over 1000 participants, it’s a celebration of all things unicycling.

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This year’s opening ceremony started with a world record attempt by Jamey Mossengren ‘The Unicycling Unicorn’, trying to ride the world’s tallest (44 foot/ 13.4m) unicycle built by Tommy Miller of the Unicycle Factory.  Jamey didn’t quite nail it during the opening ceremony, but managed to break the record later in practice.

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There was a very cool unicycle museum compiled by Jamey, which had a huge range of historical unicycles, as well as some weird and wonderful creations. 

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My favourite event was the flaming puck hockey, hosted by the Bemidji Fire Department

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My contribution to workshops included running the T-shirt swapping…

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….and a pleasant 64km social ride from Bemidji to Laporte along the Paul Bunyan Trail.  This is an old rail trail that has been paved and now serves as 190km bicycle route through the middle of the state.

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I also hosted a unitouring workshop, showing off 20yrs of Adventure Unicyclist photos from around the world.  I will post an anniversary album once the compilation is complete. 

In terms of competition, my focus was on the road races, with a bit of Muni and cyclocross thrown in for fun:

10km standard class

The course was along the Paul Bunyan trail next to Unicon headquarters at the Sandford Centre.  The first 8km was almost entirely flat and straight, then turned into a forested area leading to the shore of Lake Bemidji.  

Standard class requires every rider to compete on a 24 unicycle with 125mm cranks.  In other words, roughly half an hour of pedaling like crazy.  The 10km standard is the biggest Unicon competition, overlapping track events in terms of wheelsize/crank standard, so the ultra fast track racers also compete. 

The standard class has always fascinated me. I love the elegant simplicity of the standard, ungeared unicycle, and the skill involved in revving a unicycle to phenomenally high cadences. Since my first Unicon in Tokyo (2004), where I watched Hiroki Shigeno pedaling to victory in an incredible 28min22s, I have wanted to medal in this event. Moving from unlimited class (any size wheel/gear/crank length) 10yrs ago, I’ve had two 4th placings, a 6th and a 13th place, so it was my primary focus during training this year. 

I started in the first wave of elite riders. 3,2,1 go….I can’t sprint like my rivals off the line, but did my best to hang on for the first 2km. We were averaging 21-22km/hr.  As expected, Luis Albers (Germany) was off the front, with a group of Nicolas Chopiné (France), Fabian Toledo (Chile) and myself trying not let elastic band snap. Thankfully, the pace slowed just as Nico and Fabian dropped off the back, and I hung on to Luis for all 8km until the turn down to the lake.  Unfortunately I couldn’t relax enough to spin fast on the slight twisty downhill, and Luis put a gap of 11s on me by the finish.  I rolled across the line in 29min21s in second place, a personal best for the 10km, and my first ever expert medal in the standard 10km!  My transition to a standard 10km racer is complete.

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Loop the lake 54km standard class

My next race was the ‘Loop the lake’, a picturesque 2 lap race around Lake Bemidji.  It followed primarily cycle paths with some open road.   I was racing standard class again, but this time the 29″ standard.  You have to keep within the maximal 29″ wheel diameter, but are allowed to choose your crank length. I opted for 80mm, while my competition mostly ran 75mm cranks.  I felt the extra 5mm leverage was good for the bumps and the slight climb on the back portion of the lake.

To say this is a super fun event is an understatement.  The locals and unicyclists were out in force cheering us on, around a scenic and challenging course.

I was immediately in trouble as my younger competitors set a furious pace off the line.  Luis Albers and Aurélien Paulmier dropped the group comprising myself, Souryan Dubois and Nicolas Chopiné within a couple of kms, then Aurélien put on his turbo legs and dropped Luis.  I still had Luis in sight when we hit the road section, and spent most of the first lap trying to inch my way back.   I managed to catch Luis on the straight back to Sandford Centre (the 10km race course in opposite direction), and we rode together to complete the first lap.  Aurélien was already 1min 30s ahead, and so the fight would be for 2nd place.  Luis was the stronger rider- I tried do some work at the front, but mostly did my best to avoid getting dropped by Luis.  We passed a number of unlimited riders, their reactions priceless as we flew past their geared/36″ unicycles.

I upped the pace on the short climbs at the back of the lake, but couldn’t drop Luis, so sat up as we hit the final 8km straight. If I was lucky he might make a mistake- which, although unlikely, was the only way to beat him. As it happened, Luis cramped up 2-3km from the line.  One minute he was there, the next he wasn’t. I didn’t look back as I pedaled as hard as I could to the finish line, coming second in 2hrs4min37s, a very fast 26.0km/hr average speed.  Luis rolled in a minute later, while Aurélien won the race in 1hr58min38s, an incredible 27.3km/hr average speed!  

Another expert silver for the medal cabinet, and an age group gold medal for the 40+ category.  Not a bad day’s work. 

Cyclocross and MUni uphill

I haven’t focused on off-road events for a number of years.  Back in 2004, I came 3rd in the cross country and 3rd in the downhill. The sport is unrecognisable today- the technical ability required in MUni is so much higher.  It doesn’t suit my skillset, which is to pedal very fast, rather than risk life and limb on the typical modern race course.  I was entered in the cross country, but decided to skip it to save my legs for the road races. The uphill race was held at a picturesque local ski resort. I went to check it out, but my unicycle was overgeared (29/125mm) to it make up the hill, so I took my time to complete the race (you are not allowed to walk).  

The cyclocross race was hard but a heap of fun.  Although there was serious racing going on, it is an event where many riders dress up and there is plenty of cheering from the side lines.  It was a Le Man’s start- you run 100m to your unicycle before setting off.  A group of riders decided to do 10 push ups after the start gun! Weird, but highlights the fun nature of the event.  The course had lots of interesting obstacles and a couple of hard climbs. I tried to stay relaxed and enjoy the race. We had people squirting water, showering us with popcorn and cheese balls, an ice block station, as well as a big green dinosaur chasing riders.  I held a decent position and slowly worked my way up the field as it thinned out, finishing a respectable 14th place overall. 

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Criterium

The criterium was the final road race of Unicon.  It’s a short 800m course with lots of tight turns just like a bicycle criterium. Unlike a bike criterium, which is usually held around a city block, this event was held in a carpark. It allowed for a much twistier course, with multiple 180 degree turns.  I have been working on my cornering, but it remains a weakness, so I wasn’t sure how it would go until I saw the course, set up the night before.

In the standard class, the first five riders from each heat would progress to final.  I was a bit stiff at the start, and struggled to get around the turns as I entered them near the back of the bunch.  Luckily, I caught a number of riders on the straights, and gradually worked my way up the field until I crossed the line in 5th place, booking myself in the final.  

The finals started off somewhat better. I was in 3rd or 4th position going into the first few turns. Unfortunately, a little mistake around a corner saw me flying off to the side, and passed by everyone.  I had to work my way back to finish 7th overall, well off the pace but good enough for an age group silver medal. 

Overall, it was a successful Unicon. I am still up there with fastest unicyclists in the world, and I had a great time catching up with friends and seeing a bit of the American midwest.

Results:

10km standard race: Expert (overall) silver, age group gold

54km free distance road race: Expert (overall) silver, age group gold

Criterium standard race: 7th place, age group silver

Cyclocross: 14th place, age group 5th

MUni uphill: 43rd place, age group 15th

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Lake Taupo Cycle Challenge 2018

November generally means one thing…Lake Taupo Cycle Challenge!

This year was extra special because it was going to be our first road trip with our baby Gryffin Looi.  
 
We packed up the car, baby in the back seat….
 

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It took a while to get up to Taupo- we had plenty of stops, including the mandatory Ice-Cream stop in Hunterville
 

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and on the desert road
 

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We arrived in Taupo about 7pm. This year I had the number 2 plate (I had stayed up till midnight to register, but missed out on number 1 again!).  I won a pump as a spot prize.  
 
I had intended to ride my 36, but haven’t got around to replacing the bearings, so it would be another year on the 29.  The setup was similar to last year- my Triton 29 with Carbon wheel and 89mm cranks.  The main difference would be that I finally get to try out my Mad4One handle saddle.  It’s generally not recommended to use a brand new seat for the first time on a 160km race, but I had a quick ride on it beforehand and it felt fine….
 
The start was wet- the forecast was for rain through the day.  It was great having my support crew Anna and Gryffin at the start:
 

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3,2,1, go!
 

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I set off in Group 8, which is for riders expecting to take 7- 8.5 hours.  Taupo starts with short descent followed by a gradual climb.  By the time we hit the top of the first hill I’d overtaken all the bicyclists except for one rider….the gradient is perfect for a unicycle.  From there it was lots of rolling ups and downs, and we spent much of the next 80km trading places.  It stopped raining for an hour or so, and I was able to knock off the first 80km in under 4 hours.  Unfortunately, I had a fall at 70km, wiping out on a bump I didn’t see.  There was no major damage apart from some scrapes and bruises, but I started cramping and lost my free spinning speed when I got going again.  
 
It started raining and getting quite cold by the time we reached Kuratau, and the legs went on strike.  It was a long slow climb and descent before hitting the flat. I stopped at the Turangi Z-station for a quick pie before slogging the rest of the way back to Taupo. Apparently it was not a fast year, with few people going under 4hrs.  It was amazing to roll into the finishing straight with Anna and Gryffin patiently waiting for me!
 

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My time of 9hrs 02min was slower than previous years, partly because of the weather but mostly due to the legs not co-operating in the second half of the course.   I still had a great ride and was happy to get to the finish for the 15th or 16th time (I’ve lost count!)
 
The Mad4One handle saddle (medium) worked well. It was very light and easy to maneuver, although I was more used to a lower handle with the Flatfish/T-bar combination.  When you ride 160km on a unicycle, any seat is going to hurt. The Mad4One and Flatfish/T-bar are the best setups I’ve used, they just hurt in different places.  I had more wrist pain with the Mad4One, because the upright position forced my wrist to abduct for prolonged period.  On the other hand, without the plastic base of the KH style saddle, I didn’t get sore palms from pushing down with my hands.  I have to ride it a bit more to form a stronger opinion, but I think the Mad4One would be a good medium distance saddle, whereas I prefer the KH/Flatfish for shorter distances, and perhaps the KH/Flatfish/T-Bar combo for longer distance.
 
 

New Womens Unicycle Hour World Record! 27.027km

I had the pleasure of timekeeping yesterday for Mirjam Lips  (Switzerland), who was attempting the womens unicycle hour record at Unicon 18, San Sebastian, Spain.

She broke Nadine Wegner’s previous record of 23.65km with a new distance of 27.027km, with a very strong ride on a 400m athletics track.

Congratulations Mirjam!

Karapoti Classic 2016

The first Saturday of March means only one thing on my calender…The Karapoti Classic! This years edition was looking very fast indeed, with perfect weather and a relatively smooth course.

My weapon of choice was my trusty Triton 29″/125mm. In 2015 I experimented with an ultralight 26″/114mm setup, which was great for the climbs, but felt rather knocked about on the rough, so it was back to the big wheel this year.

The setup:
– Triton 29″ Sponge Titanium
– Quax 125mm cranks
– KH cromo hub/KH 29″ XC rim
– Schwalbe Racing Ralph 29×2.25
– Wellgo MG1 pedals
– NNC Flatfish carbon seat
– Thompson elite seatpost

We lined up on the the banks of the Akatarawa River, the traditional start line of the Karapoti. Having a unicycle means I can get across before the bikes, which I duly did. My crank choice was shorter than previous years where I used 145mm, and I was unsure whether I’d have the legs to push 125mm. The fears quickly dissipated as I spun my way up Karapoti Gorge, keeping up with my start group.

The biggest bummer was missing my race buddy Tim Armstrong, a local unicyclist from Upper Hutt. He’d done serious damage after coming off his unicycle a couple of months before- and ended up with a forearm held together by external fixation! Normally at this part of the race I’m doing my hardest to get as much time as possible on Tim. He’s a formidable climber, and closes the gap on the way up Deadwood.
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Nevertheless, my legs felt good, the cushy 29’er tyre and short cranks were smooth, and I was going as fast as ever. The entries were down this year, so there were fewer riders to get around on the climb up Deadwood.  I remembered my *ding ding* bell, which I would ring as I passed people.

“Outta the waaaay!!! CAN’T STOooP!”

I heard a guy scream as he ploughed down the first rocky section after the warm up climb….straight into me! Luckily the unicycle is virtually bomproof, but my left thigh was left bruised and bloodied. It didn’t slow me down but still hurts days later.

After reaching Deadwood it was a nice spin over the rolling section at the top, then a fast dive into the Rock Garden. I was running 38 PSI in my tyre, which is firmer and bouncier than usual. In 2014 I came close to smashing the 2005 unicycle record (and possibly going under the magic 4hr mark), until a pinch flat took forever to fix! Never run 20 PSI at Karapoti.

The Devils Staircase had been bulldozed and graded. I was both gutted and pleased at the same time. The original steep, boggy, fissured slippery slip was an iconic part of the Karapoti. At the same time, I knew I was on track to breaking the Karapoti Record, particularly if I could pick up a few minutes on the Devils Staircase. The climb now resembled Deadwood and Dopers- rideable for many mountainbikers.

Over the top of the Devils Staircase and it was on to Big Ring Boulevard. This is supposedly the fastest part of the course, but on a unicycle it can be tough going- you are dodging rocks and and ruts and generally shaken to bits. This year, it was smooth and the 29″ Racing Ralph stuck like velcro, rolling over everything.

By the time I hit Dopers Hill, I was confident I would break the unicycle record, barring something stupid, like crashing or puncturing. I cramped a little so eased off up the climb.

The last section down the Gorge felt like I was flying- I came close to spinning out my 125’s. As we hit the Akatarawa river again, I was careful not to fall in like I usually do. Just had enough juice to remount and climb up to the finish line. It is always good at the end!

Unfortunately, after checking the final time, I’d done 4hrs14min49secs! Three minutes slower than my 2005 record. I’m still scratching my head where those 3 minutes went- felt like my fastest Karapoti ever.

Oh well, there is always next year.

Karapoti Photo Album

C3 stainless steel project

After getting back from Unicon 17, I realised that I have far more wheels than unicycle frames, and it was time to get a dedicated frame for my 700c standard racer. I had been using my 2008 Triton sponge frame, which is an amazing unicycle frame, but looks rather silly with a sleek racing wheel. It was designed for a 29’er mountainbike wheelset, and had enough clearance to drive a truck through. That notwithstanding, every time I wanted to go out for a ride, I’d be swapping wheels in the frame.

I was originally planning a titanium road frame, but with Dmitry at Triton busy with bicycles over the 3yrs I had been pestering him, I had to find a local alternative. With three titanium unicycles and a Litespeed titanium road bike, you can probably guess I am a big fan of the grey metal. The great thing about titanium is that it is strong, corrosion resistant, doesn’t need painting, and still looks great many years later. It is also hard to work with, which is why there are few ti builders around.

So with a bit of research I came across the new stainless steel tube sets being used on bicycles. Most of the bicycle tube manufacturers are making them, and they are perfect for custom bike frames. As yet, though, I am not aware of any stainless steel unicycles. Stainless steel doesn’t need painting, is light, strong, and, in my opinion, looks even better than titanium….I would be swapping grey metal for the shiny one.

I looked up several frame builders in New Zealand, but settled on Anders Waiker at C3 (crucial custom cycles) in Petone, not far from where I live. It meant I could pop by during the week to sort out any design issues. He makes some beautiful mountainbike frames, so I was keen to work with him.

We decided to use the KVA MS3 tubeset, which has a built in curve for a bicycle chainstay. We thought the s-bend would look pretty cool on a unicycle. It took a few weeks for the tubes to arrive from the US, but here they are:

KVA MS3 Stainless Steel Tubeset, ready for welding

Now you’d think a unicycle frame is a fairly straight forward thing to build, but once you add in curves it becomes a bit more complicated. Luckily, I could bring in my 700c wheel to slot into the frame to help with measurements, because my framebuilder is local.

We had less clearance than expected, which meant that Anders had to crimp the legs slightly. On the other hand, the s-bend gives heaps of foot clearance, which is vital to anyone who races standard class.  You want your feet as close to the frame as possible to maintain a high cadence, but you don’t want your feet hitting the frame either. An added bonus of bicycle tubing is you get the special things they do to bicycle tubes, such as double butting. These tubes are superlight!

Anders fillet brazed the frame, giving it a smooth seamless appearance. Check out the seat-tube and fork leg interface:

Sexy curves

The fork was completed with a mirror finish (it took Anders 3 days to polish it!), and sent off for painting. Unfortunately the painter had undergone hand surgery, so it took a couple of months to get it back.  Anders topped the frame off with a very nice Thompson seat clamp.  

The complete specs are:
Nimbus Eclipse hub
Wheelsmith SS spokes
Mavic Open Pro rim
Schwalbe Kojak 700x35c folding tyre
Nimbus Venture 89mm cranks
Welgo M111 pedals
Kris Holm seat post
NNC Flatfish saddle

Total weight is 3.410kg with the above specs. I did some swapping of components (75mm nimbus cranks and 700x23c Rubino Pros), and swapping seats (my other Flatfish saddle uses lighter foam), which brought it down to 3.133kg. Not far off a sub-3kg unicycle, which should be achievable with a few component tweaks. 

So how does it ride? Unlike a bike, the frame has less influence of the ride than the wheel itself. The main requirements are stiffness, particularly on climbing and cornering, adequate clearance, and lightweight.

I’m pleased to report the C3 stainless racer performs well on all three counts. I jammed it up the steepest hill I could find, which would normally flex any unicycle frame. Despite trying my hardest, there was no rub at all, even with the small clearance between the spokes and the frame.  It corners like a dream, tracking exactly where I point it, even when driving hard into a turn.

The s-bend stiffens the frame and gives oodles of room to get my feet close to the midline without rub. Not a big deal for most riders, but for anyone spinning over 160rpm, the last thing you want is to hit the frame with your foot. Weight-wise, the frame is comparable to the Tritons at a shade over 600g. Although the butted stainless steel tubes are lighter than titanium, the bearing holders on the Tritons are quite unique. As a result, the C3 frame is weighted toward the bearing holders, which gives it a lower centre of gravity- not a bad thing.

Although I built the unicycle as a racing uni, most of the time…it won’t be. That means no excuse for wearing lycra either!  Baggy shorts are not a good combination with unicycle frames, they tend to snag on the fork crown.  With the s-bend C-3 racer, I can ride my unicycle any time, anywhere, and not worry about ripping my shorts to bits.

Oh yeah, did I mention it looks cool?

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