The No.6 A3RO and Pulsar Disc TT setup proves fastest overall!
5-6 watts faster at race speeds!

No.6 went into the tunnel and the numbers came back loud. The No.6 TT setup: pairing the Pulsar Disc with the A3RO Tri-Spoke came out fastest overall by a significant margin against the tested Scope and Bontrager setup.

Big Big News, Live from the Wind Tunnel.

"Who can average nearly 55kph for 42 kilometres?"

Ganna, obviously.

But that is exactly why the wind tunnel matters.

At that speed, every watt counts. The air is no longer just wind. It becomes the opponent, the course, and the invisible hand pulling against every pedal stroke.

This is where aerodynamics stop being a marketing phrase and become arithmetic. The TT result is not a simple “faster everywhere” story.

It is better than that.

Across the full tested range:45 to 50kph and 0 to 6° yaw, the full No.6 TT setup recorded the lowest average power requirement.

The baseline Scope + Bontrager setup required 268.5 watts on average. The full No.6 TT setup, pairing the Pulsar Disc with the A3RO Tri-Spoke, required 265.6 watts. That is a saving of 2.9 watts across the full test range. Not one cherry-picked number. An average across the tested conditions.

The mixed setup, using the No.6 Disc with the Bontrager front, was also faster than baseline at 266.9 watts on average. That tells us the No.6 rear disc is already contributing measurable speed. But the full No.6 TT system was faster again. That is the more important point. The rear disc helps. The front wheel matters. Together, they make the fastest complete setup in the test. At 45kph, the No.6 TT wheels were faster at every yaw angle tested.

At 0° yaw, they saved 2.6 watts.

At 3° yaw, they saved 3.7 watts.

At 6° yaw, they saved 4.3 watts.

The pattern is useful: as yaw increased, the saving increased too. That suggests the setup is not only clean in straight airflow, but also strong when the wind starts to move across the bike. At 50kph, the story becomes more specific. In a pure 0° yaw condition, the Scope + Bontrager baseline was faster. That should not be hidden.

But once the airflow shifted to 3° and 6° yaw, the No.6 TT setup reversed the result and saved almost 6 watts at both points. That is where the race-condition story gets interesting. Real roads rarely give you perfect head-on airflow for an entire time trial. There are exposed sections, small wind shifts, changes in rider direction, and constant changes in apparent yaw.

So the useful takeaway is this: The No.6 TT setup was not built just to win one perfect lab condition. It showed its strength across realistic yaw angles, where outdoor racing often lives. The CdA result supports the same direction. The baseline averaged 0.1911 CdA. The full No.6 TT setup averaged 0.1889 CdA. A reduction of 0.0022 CdA does not look dramatic on paper. But at 45–50kph, small aerodynamic differences become expensive quickly.

That is why this result matters. 

No bunch. No hiding. No soft excuses. Just rider, machine, position, and air.