Specifications
Bike
Frameset :
Specialized S-Works Crux
Groupset :
Sram Mullet Force X01 Eagle AXS
Crankset :
THM Clavicula SE
Cassette :
9-52 KCNC
Pedals :
Crank Brothers Eggbeaters 11
Handlebar :
Darimo Nextum
Shifters :
Sram Force
Wheels
Rims :
AR25
Disc Hybrid Hook UD Paintless 24H
Hubs :
Extralite HyperSmart3 Black 12
Spokes :
Black Berd Spokes and 2 White Aside from the Valve, which I colored green to match with the
frame.
Nipples :
Sapim Aluminium Black
Tires :
Tufo Speedero
I have always been searching for the lightest solutions for gear.
In the past, I used to do triathlons in nature and with as much climbing as possible, like the Big
Ben Nevis triathlon, a half-distance off-road triathlon where running was up and down Ben Nevis, the
UK's highest mountain. Or the long-distance course of the triathlon d'Alpe d'Huez, the
Transvorarlberg triathlon, a lot of XTerras in Germany, France, and Spain, and finally also the
Inferno triathlon in Switzerland. But now I qualify as an adventurer, always starting from my
self-built house in the Belgian Ardennes. I'm always searching for new roads and tracks to cycle,
single-day or multiple-day adventures, trying to capture nice views and sunrises or sunsets, and
from time to time attack a Strava segment. As my weight is not a limiter, I'm always searching for
the lightest solutions for gear, so that adventures can last longer and further, and adequate gear
can be taken along on an adventure.
My previous experience of buying ready-built bicycles & parts
I started by buying ready-built bicycles in a time before the Internet when the local bike shop was
the only place to get bicycles and parts. Then there came bigger shops where you could see offers on
the Internet and exclusive parts became available at interesting prices, so I started upgrading my
bikes with those parts. The visit to the shop was often combined with a cycling weekend in that
region. And then came the time that everything was available on the internet, so I started building
my own bikes from scratch. As you could see from the prices of the parts and the full-built
bicycles, it was clear that you could have a much ‘lighter’ bicycle for the same amount of money.
When I ordered expensive parts, I tried to find stores where I could still drive to if something
went wrong.
I did build myself a road bike for my triathlons with lots of elevation. A Cervélo SLC-SL with
Madfiber wheels and THM crank and rim brakes, a Haero handlebar with (removable) integrated time
trial position, and Sram Red shifting - in its lightest version around 5.8 kg for a pretty aero
bicycle. Perfect for triathlons with lots of elevation. 15 years later, it is still an amazing
bicycle to ride. Then a mountain bike with a Scott Scale Premium frame, MMX Podium rims to run even
standard tires tubeless, a novelty back then, and Acros AGEN hydraulic shifting, which I’m now
trying to restore.
Then I added a gravel bike with a setup to go bikepacking. The frame was ordered directly from
China, but import duties made it more costly than expected. I ordered a frame and fork non-painted
as this prevented the heavy import duties but the fork that came with the frame was painted… so
duties were imposed! A bad experience partially because of the bad English of the seller in China.
Nevertheless, the frame still cost less than the exact same frame sold by a Belgian brand.
For my last bicycle build, I wanted to build a superlight gravel bike.
For my last bicycle build, I wanted to build a superlight gravel bike that I could ride mostly on
paved roads but also was able to attack gravel and dirt roads. Too far to reach with a mountain bike
and not yet been explored by me.
I ended up with a superlight Specialized S-Works Crux frame and lots of light parts, but really
light wheels were hard to find. Finally, I found an interesting rim on Light Bicycle. I searched for
reviews on them and found lots of good feedback on the bicycle forums. They got an option to send to
Europe with tax and duties prepaid, so no surprises when the wheels were delivered. So I contacted
them and the conversation was way better than my previous experience with the seller of my frame.
I finally opted for the AR25 rim, Extralite hubs,
and Berd spokes. Weight was calculated at 851
grams, and my scale weighed them at 876 grams for the SET of two! It just took longer than promised
to build the wheels, but they arrived without any trouble of customs or transport. That made me able
to finish my bike and weigh in. 6.2kg for a gravel bike with a pretty big range of gears due to the
9-52 cassette. My first riding impressions are impressive. The bicycle seems to float over the
gravel roads. As the Berd spokes are dampening, the small vibrations go out and the bike is
unbelievably easy to accelerate after a turn or twist, even faster than my 5.8kg road bike, and the
extremely low rotating mass of the wheels must be responsible for that.