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We make bikes and performance solutions that deliver
measurable athlete performance improvements
The Kú TF1 demonstrates a CdA
saving of 6% against the Cervelo P5
the Kú TF1 saves the rider 10 watts
of power compared to the Cervelo P5
Over A full Ironman the rider
will reduce his bike split by 6 minutes
The tests performed for the Cervelo P5 and Kú TF1
were based on the standard Kú aero testing protocols
The Kú TF1 demonstrates a CdA saving of 6% against the Cervelo P5 over a 4-day aero test. The P5’s lowest CdA was 0.252 which was reduced on the Kú TF1 to 0.237 measured in the same conditions.
Over a full Ironman distance riding at 35Kph the Kú TF1 saves the rider 10 watts of power compared to the Cervelo P5.
Over the same full Ironman distance riding at a constant normalised power of 250 watts, the rider will gain an average of 1Kph on the TF1 compared to riding the P5, reducing his bike split by 6 minutes.
After the tests the rider reported “being more comfortable on the TF1 than the P5 from the start of initial testing and this feeling improved over the course of the test program”.
The rider’s lactate levels were checked after each run and the results would suggest greater efficiency when riding the TF1 over the P5, adding credibility to the rider’s subjective feeling of comfort.
Four days of testing outdoor and indoor having
established the best possible aero position on both bikes
Four days of testing outdoor and indoor having established the best possible aero position on both bikes Each four day camp starts with a familiarisation, set up and baseline data day out on the dyke. Then we move inside to the velodrome for two days of detailed position and equipment testing before closing the camp with a final day out on the dyke in real race conditions.
We spend four days of concentrated testing on their own Kú TF1 tuning their fit and achieving their most efficient aero set up.
During a Kú performance Aero test the rider completed anywhere between 60Km in data collection test runs. With each of our AeroLab devices collecting 5000 data points every second at a 40Kph average that’s around 22.5 milion data points.
The tests performed for the Cervelo P5 and Kú TF1 were based on the standard Kú aero testing protocols.
Cervelo P5 DISC
2021
Kú Cycle TF1 DISC
2021
DAY 1 / TUESDAY 15 MARCH / 2022 – ALMERE DYKE – THE NETHERLANDS
This location offers the perfect combination of surface, flatness and wind for studying the real effects of conditions on aero performance.
Independent test rider Dave Rost establishing an aero baseline on his Sunweb Team 2021 P5. Dave is an experienced age group athlete that races in the top range of his age group in both half and full ironman distance. He has been riding his Cervelo P5 for more than a year after a professional bike fit being performed. Dave Rost P5 contact points were transposed to the TF1 before establishing an aero baseline.
Based on the fit of the rider to both the P5 and the TF1, the following CdA test results were measured in an outdoor environment before any position adjustments were made.
DAY 2 & 3 / 16 – 17 MARCH / 2022 – APELDOORN VELODROME – THE NETHERLANDS
Home to the Dutch National Squad the Kú Cycle team took over the Omnisport Arena in Appeldoorn for the indoor phase of each weeks test program.
Having laid down some initial CdA values from testing in real world conditions on the dyke at Almere, the testing moved indoors to the velodrome at Appeldoorn in The Netherlands for two days of aero tuning.
Dave was well adapted to his P5 based on one year of racing following a professional bike fit and had maximised the adjustment range of the P5 frame size he was riding. There was little in gains to be had from any further changes, and those changes were severely restricted in any case by the limits of the bike.
The initial position of the rider on the TF1 was based on the copied fit data of his P5 and in Daves case represented his final possible position on the P5. During the indoor test, several position adjustments were made to the rider based on the test data results of each individual test run.
DAY 4 / FRIDAY 18 MARCH / 2022 – ALMERE DYKE – THE NETHERLANDS
After three days of testing outdoor and indoor having established the best possible aero position on both bikes, the final test was now performed outdoors on the dyke in real world conditions.
TEST RUN SUMMARY FROM THE FOUR DAYS
KÚ CYCLE AERO TEST RESULT – VALVE PLOT
KÚ CYCLE AERO TEST RESULT – CDA BAR CHART
KÚ CYCLE AERO TEST RESULT – COMFORT HEAT MAP
CONCLUSIONS
The Kú TF1 demonstrated a CdA saving of 6% against the Cervelo P5 over a 4-day aero test. The P5’s lowest CdA was 0.252 which was reduced on the Kú TF1 to 0.237 measured in the same conditions.
The Kú TF1 demonstrateS a CdA
saving of 6% against the Cervelo P5
the Kú TF1 saves the rider 10 watts
of power compared to the Cervelo P5
Over A full Ironman the rider
will reduce his bike split by 6 minutes
Transistorstraat 151
1322 CN Almere
The Netherlands
KvK-nummer: 74978454
VAT: NL860095629B01
Email: info@ku-cycle.com
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