Grand Tour winners and Aurum co-owners Alberto Contador and Ivan Basso have launched model 2 of the Aurum Magma, their efficiency race bike ridden on the Giro d’Italia by the Polti-Kometa professional crew – and by Cyclingnews on the Aurum Magma launch in Spain, the place we rode with Alberto Contador himself.
The first era Aurum Magma was launched round 5 years in the past by Contador and Basso and the brand new mannequin follows lots of the traits in efficiency bike design within the interim.
The new bike is extra built-in than its predecessor – a standard spec improve between bike generations, as seen on the most recent Giant TCR, for instance, which ought to assist to avoid wasting watts.
The new Magma can be claimed to be extra aero and sooner than its predecessor uphill, downhill and on the flat. That comes from new body tube profiles, with the rear of the bike now aero-profiled, instead of the primary era’s spherical tubes.
The head tube too is now deeper and the fork crown’s stance has been elevated for higher airflow and to accommodate as much as 35mm tyres. The down tube is wider for higher aerodynamics when used with wider wheels and tyres and with bottles hooked up.
The high tube tapers right into a flattened profile in direction of the rear of the bike, which is claimed to extend shock absorption.
While many aero bike frames have lowered seatstays, the Magma retains a extra classical excessive seatstay design, which Aurum says improves each lateral stiffness and vibration absorption.
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A 17 watt saving
The Magma V2 design was refined utilizing CFD and was then verified within the University of Valencia wind tunnel with the body fitted with quite a lot of parts. The model says NACA aeronautical profiles have been used and utilized to many areas of the bike.
Despite the extra traditional seems, Aurum claims that with the identical bars, wheels and parts because the outgoing Magma, the brand new body is round 7 watts sooner at 45kph, and not using a weight improve. Add within the new aero-integrated handlebar and stem and there’s one other 10-watt saving claimed.
Aurum says that the body’s carbon lay-up has additionally been altered, with six totally different grades of Toray carbon fibre and resin utilized in every body and measurement to boost stiffness-to-weight from the first-generation bike. In reality Aurum says every mannequin measurement has its personal particular carbon layup. The model claims that the development course of which they name ECT (expertise carbon expertise) and high-pressure mould tech end in higher compaction of the carbon fibre and a smoother inner floor.
The claimed weight for an unpainted measurement 54 body is 780g, whereas the fork weighs 375g, the seatpost 170g and the bar/stem 320g. Aurum claims to have lowered weight in different parts, together with the thru-axles, mech hangers and seatpost clamp, not simply the body. Taken collectively Aurum says {that a} full bike can weigh as little as 6.5kg.
Aurum says that it’s not centered on low weight on the expense of structural rigidity although and has aimed for balanced using traits and most efficiency. The Magma is claimed to have seen a rise in torsional rigidity however with out compromising consolation.
Aurum Magnum sizing and requirements
The new Aurum Magma is on the market in 5 sizes from 48 to 58 with two totally different fork offsets for constant dealing with throughout the vary.
Aurum additionally gives at least 15 bar/stem width/size mixtures, an identical quantity to the 16 provided for the Most Talon Ultra bar/stem fitted to the Pinarello Dogma F or the 13 bar/stem combos for the Colnago V4Rs. There are additionally two totally different seatpost setback choices, 0 and 21mm.
The bike is now specced with a T47 backside bracket shell and consists of CeramicSpeed bearings in full bike builds. A Sram UDH rear derailleur hanger ought to make substitute simpler. There’s additionally clearance for 35mm tyres and the Magma is suitable with digital groupsets solely. There’s a lifetime body guarantee.
At launch, the Aurum Magma will probably be obtainable both in white or uncovered carbon. You might have observed that Polti-Kometa’s crew bikes sport a spread of 4 totally different colors, and Aurum says that considered one of these will subsequently be provided as an extra color for the Magma and type the crew’s single bike color in future.
Aurum Magma builds
You should buy the Aurum Magma as an entire bike or frameset-only. A frameset will set you again €4,999 together with the built-in handlebar. The top-spec full builds can be found with Shimano Dura-Ace (and not using a energy meter) or the brand new SRAM Red AXS groupset (with an influence meter) after which with a alternative of high-end wheels from Enve, Princeton Carbonworks or Lightweight.
Three Dura-Ace and three Sram Red builds can be found with the aforementioned wheels, costs begin at €11,499 for the Enve SES 3.4 choice, and high out at €14,999 for the Lightweight Obermayer spec.
Red AXS builds share the identical pricing for Enve, Princeton and Lightweight builds.
Lower down the pecking order, there are two Shimano Ultegra and two SRAM Force builds, each obtainable with Enve SES or Enve Foundation wheels. These builds begin at €8,099 and rise as much as €9,599. Aurum additionally gives a lifetime guarantee on all merchandise.