{"id":47518,"date":"2023-03-29T16:37:20","date_gmt":"2023-03-29T14:37:20","guid":{"rendered":"https:\/\/www.bikeradar.com\/?p=721722"},"modified":"2023-03-29T17:35:38","modified_gmt":"2023-03-29T15:35:38","slug":"team-jumbo-visma-trials-kaps-adjustable-tyre-pressure-system-at-dwars-doors-vlaanderen","status":"publish","type":"rss_feed","link":"https:\/\/c01.purpledshub.com\/cyclingplus\/rss_feed\/team-jumbo-visma-trials-kaps-adjustable-tyre-pressure-system-at-dwars-doors-vlaanderen\/","title":{"rendered":"Team Jumbo-Visma trials KAPS adjustable tyre pressure system at Dwars Doors Vlaanderen"},"content":{"rendered":"

Hub-based pressure controller spotted on Edoardo Affini’s Cerv\u00e9lo S5 <\/p>

By Jack Evans\n \t\t<\/p>

Published: Wednesday, 29 March 2023 at 12:00 am<\/p>

\n\n

Team Jumbo-Visma appears to be trialling the KAPS adjustable tyre pressure system at Dwars Door Vlaanderen.<\/p>\n

Edoardo Affini\u2019s Cerv\u00e9lo S5 was photographed with the technology installed into a Reserve wheelset at the start of the cobbled classic.<\/p>\n

As spotted by Twitter user @JVerlaeckt, a cable runs from the KAPS hub to the valve of the as-yet unreleased Vittoria Corsa tubeless tyre<\/a>.<\/p>\n

The Kinetic Air Pressure System enables the rider to inflate and deflate their tyres on the go via a wireless handlebar remote, according to the brand. The pump is powered by the wheel\u2019s motion.<\/p>\n

Affini seems to be using the KAPS system in Team Jumbo-Visma\u2019s usual wheels, though for consumers the technology appears only to be available in a Gravaa wheelset. The R-40|44 road version costs \u20ac4,299.<\/p>\n

Why would riders need to adjust their tyre pressure on the move?<\/h2>\n
\"""\"<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture><\/div>
The adjustable tyre pressure system has made its professional racing debut.<\/span><\/figcaption> Tim de Waele \/ Getty Images<\/i><\/span><\/div>\n

While it\u2019s certainly an emerging technology, an adjustable tyre pressure system seems best-suited to cobbled Classics such as Dwars Door Vlaanderen, if it is going to take off at all.<\/p>\n

The early-season races of Belgium and northern France alternate between smooth tarmac and bone-jarring cobbles, where lower tyre pressures are commonly acknowledged to be faster and provide better traction and comfort.<\/p>\n

Could Team Jumbo-Visma be giving KAPS a whirl before the two cobbled Monuments, the Tour of Flanders on Sunday and Paris-Roubaix the following weekend?<\/p>\n

Professional riders have been progressively lowering their tyre pressures<\/a> for the Hell of the North in recent years, thanks in part to the adoption of wider tyres and tubeless technology.<\/p>\n

Lizzie Deignan won the Queen of the Classics<\/a> with reportedly just 33psi in her tubeless tyres<\/a>.<\/p>\n

KAPS could, in theory, enable a rider to drop their pressure even lower ahead of key cobbled sectors, such as the Forest of Arenberg.<\/p>\n

This could be especially valuable in the wet. In the same year as Deignan\u2019s victory, Gianni Moscon was leading the men\u2019s race solo before crashing following a bike change. Eurosport commentators speculated that excessive tyre pressure on his spare bike reduced his grip on the wet pav\u00e9.<\/p>\n

Prior to last year\u2019s Paris-Roubaix, Team DSM hinted its riders would use another wireless tyre pressure adjuster<\/a>, but didn\u2019t on the day.<\/p>\n

How does KAPS work?<\/h2>\n
\"""\"<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture><\/div>
The pump in the hub is controlled wirelessly with a button on the handlebar.<\/span><\/figcaption> Gravaa<\/i><\/span><\/div>\n

The brand says the rotation of the bike\u2019s wheels powers the cylinders of the pump, which is held within the wheel hub.<\/p>\n

To save the pump\u2019s battery, the rider can switch it off when not in use with a pneumatic clutch on the handlebar, according to KAPS.<\/p>\n

The narrow valve connecting the hub to the valve of the bike tyre is said to compress the air flow to enable rapid inflation or deflation.<\/p>\n

The hub pairs to the handlebar remote via Bluetooth or ANT+. Pressing the button up or down raises or lowers pressure. Current pressure can be displayed on a bike computer<\/a>, according to KAPS.<\/p>\n

If you simply wish to maintain the same tyre pressure, KAPS says the system can hold a set tyre pressure, even apparently adding air when it detects a puncture.<\/p> <\/body><\/html>\n

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