Custom Build Journal

A BEAUTIFUL SUMMIT WHITE DOGMA F

Design & Project Management: Manish
Builder: Alex

Every custom build we do is unique. It’s purpose built for the rider in mind.

It’s not about spending the most amount of money.

The goal is make you more comfortable and make you faster and in doing so help you reach the most elevated riding experience ever.

So when we started this project for Pete, we set out with a clear focus of making his new machine fast and elegant.

When you see this one ride by, you’ll have the subtle impression that this Dogma F looks a little different to the rest of them.

That was our goal.

Because there’s many Pinarello Dogma F’s on the global social media stage. After a time they start feeling…the same. Almost predictable.

And predictable inevitably becomes boring.

No.

This one had to have a little extra something.

And whatever we bolted onto this brilliant chassis had to be a data driven decision. There had to be a functional purpose and a benefit to using that particular component - backed by data and not anecdotal evidence (there’s so much of that BS in the bike industry).

FIT AND FRAME

Peter has had a Colnago M10, Colnago C60 and Specialized S-Works.

After a bike fit session, a size 530 was chosen in Summit White (B617 Disc) paired with a zero-offset seatpost.

The pain points with Pete’s current setup:

• Lack of power on climbs.
• A very loose and unstable front end.
• Left hip flexor and knee pain.

Our aim with this setup was to achieve a comfortable riding position that would allow Pete to deliver higher sustained power versus higher peak power.

Because what’s the point if you can only maintain that high peak-power position for, like, 10 seconds?

Pete’s short torso limits reach. Hence the zero-offset post was used. It allows us a better fitting range for overall reach.

And (much more importantly) the torso’s balance point on the bike itself.

Pinarello’s stock offset post has too much setback for average to short riders. Plus it needlessly slackens the seat tube angle.

The 530 size also had a slacker head tube angle. On fast descents and aggressive bunch rides, this will deliver stable handling and better control.

Next, we had to reduce the excessive shear force at the knee.

We opted for a 165mm crank arm length. This will help smooth out the pedal stroke at top dead-centre (12 o’clock) and reduce shear forces at the knee.

It will also help the knee maintain a consistent velocity throughout the pedal stroke. Although knee bend is taken into consideration, it’s not the most accurate assessment of saddle height. knee velocity tells a better story.

PARTINGTON

Days were spent assessing, comparing and discarding wheels.

Lightweight has always been the benchmark. They are one of very few brands that do a carbon spoke that is rim to rim, as opposed to what most riders have experience with - rim to hub.

But their rim hasn’t seen an update for many years. Thus, Lightweight’s cross-wind performance isn’t going to be on par with the rest.

The 18mm internal rim width is also not exactly modern, especially paired to the current trend of wide road tyres.

Princeton Carbonworks is the easy option. But the weight is a little on the high side. Plus, we wanted this Dogma F to stand out a little.

We settled on the new Partington Race MKII wheelset. We consider these to be a modern Lightweight.

They use a 21mm internal rim width which pairs much better to larger volume road tyres without being as wide as a Zipp 353 NSW.

The tyre has a nice round shape instead of a sharp transition. A hooked rim bead also means Pete isn’t restricted with tyre selection.

As you can see from the above image, the carbon spokes wrap themselves around the carbon hub, exit and reattach to the rim.

Partington’s carbon hubs come with CeramicSpeed bearings as standard.

GROUPSET

Shimano’s latest 12-speed Dura-Ace may not have the romance of Campagnolo or the full-wireless ecosystem of SRAM AXS but…it works.

Flawlessly.

HyperGlide+ tech was transitioned from Shimano mountain bike groupsets to road. For off-road riding, shifting under power and load is often unavoidable, so any improvements here can significantly enhance the experience.

And that’s what the HG+ does. No crackle and pop, just a silky smooth shift.

We decided to take advantage of Shimano’s Syncro-shift presets and use a wider gear range.

We paired a 52T/36T chainring combination to Dura-Ace’s 11T-34T cassette.

The 34T rear cassette delivers a much easier gear to spin in compared to the 30-tooth. Plus it’ll help Peter climb the Dolomites when he transports the bike over to Italy.

We paired the Dura-Ace groupset with Shimano latest CL900 rotors.

Some of you may have noticed the Rotor Aldhu (short for Alpe du Huez) carbon cranks.

We chose these because they delivered a better stiffness-to-weight ratio compared to the Dura-Ace cranks. And we wanted something a little different than your typical complete Dura-Ace groupset.