Ingezonden

Vision’s wheels aren’t usually picked from a Taiwanese catalog and badged adult – they’re all designed and fabricated in-house (Robin Wilmott/BikeRadar)

Vision are best famous for their aero bars though they’re aiming to turn large players in a highway circle market, too. All of their wheels are designed and fabricated in-house. This, a association explained during a refreshingly honest display of their 2013 line on a Spanish island of Mallorca, gives them a opening corner and lets them keep ultimate control.

PRA hubs

Literally during a heart of Vision’s new wheels are their
new PRA – Preload Reduction Assembly – hubs. In a crafty public of mechanics
and aerodynamics, these have a threaded collar that allows temperament preload to be practiced with a circle in place (independently of a quick-release and heart assembly) and also cheats a wind. The result, according to Vision, is a front heart that’s 20g lighter and 10 percent faster than a prior generation. The preload adjustment, carried out regulating a 2mm Allen key, prevents overloading of a circle bearings, thus augmenting lifespan and ensuring well-spoken rotation. 

The behind hub
now boasts a wider position following feedback from veteran riders who asked
for some-more parallel stiffness. By relocating a non-driveside prong outwards by 10mm,
wheel rigidity has been increasing by adult to 26 percent. A redesign of a hub
internals has outcast steel for a totally amalgamate freehub body, saving 20g and
reducing inertia. Super-smooth using is taken caring of by 4 easily
replaceable hermetic cartridge orientation in a behind hubs and dual during a front,
all mounted on 17mm hole axles.

Vision’s new PRA hubs are lighter, some-more aero and build into a stiffer wheel

Metron 81

But adequate about a hubs – it was Vision’s new CO rims
that combined a biggest stir during their 2013 launch, and after 5 years of growth demeanour well
worth a wait. The 88mm low Metron 90 is succeeded by a 81mm deep
Metron 81. In line with stream thinking, it has a sincerely rounded, foil-profiled corner – 24.5mm during a widest and 23.7mm during a braking surface – and includes a tyre in a altogether figure to emanate a turbulence-reducing whole.

The association ran some-more than 900 resource simulations with
computational liquid dynamics program and afterwards done some-more than 100 exam corner profiles
before final that this was a fastest. In breeze hovel tests opposite dozens of
competitors’ wheels, they found a Metron 81 to be closely rival with
Zipp’s 808 – both had an corner underneath incompatible conditions.

Vision’s Metron 81s have unidirectional CO twine rims with a 3K CO braking surface

Vision contend a advantages of a new corner figure are plentiful. The wider
tyre bed creates a tyre some-more quick and gives a some-more dull step profile, that offers softened hold and therefore faster cornering. The rounder corner form suffers reduction from side
force, creation it some-more quick in crosswinds. Improved construction methods, a shallower corner abyss and a reduced
internal hole have brought corner weight down from 600g to 475g, and aerodynamics have been improved, too; a Metron 81 creates 63 percent, or 12 watts, reduction drag at a 0-15° bend angle
(angle to airflow) afterwards a Metron 90 did during usually 10°.

The Metron 81 is accessible for tubular tyres only, with 18 aero bladed
spokes laced in a radial settlement to a CO heart adult front, and 21 during a behind in a 2:1 pattern,
radial on a non-drive side and crossed twice on a other. Claimed weight is
a meagre 1,495g, incompatible a really gratifying CO quick-release skewers. Vision contend this creates them a lightest wheels in a 70-80mm abyss difficulty by 30g. Supplied with a wheels are carbon-specific stop pads, valve extenders and circle bags. They should seem in a pro peloton from Mar and make it to ubiquitous sale after in 2012, with pricing still to be confirmed.

You’ll get beheld roving these wheels!

Having listened all about them, we were prickly to try the
wheels out for ourselves. On a balmy though spacious day nearby Alcúdia we suspicion we might
be in for a battle, though from a off it was transparent how light and unbending the
Metron 81s are, and clearly defence to crosswinds. Acceleration was superb
for such a low rim, and impossibly gratifying too, with a swishing sound of
deep vale CO and tubular Vittorias egging us on until we could scurry no
more.

The weight is no interruption on climbs either – they come in during reduction than a benchmark Mavic Ksyrium Elites – and descending, nonetheless reduction nimble than on a
shallower rim, was plain due to a far-reaching rims helping grip, feel and
stability. All in all, a Metron 81s are tough to error and seem like they’d make an ideal circle for time trials and
powerful riders.

Vision’s Metron 81 full-carbon wheels upstaging a Colnago

Metron Disc

An astonishing warn during a 2013 display was a uneven figure of the
new Metron Disc. Unlike Vision’s current, conventional, prosaic front wheel, a latest
one takes a Metron 90 and adds a silicone-bonded fairing to any side to
seal in a spokes. On a expostulate side, a uni-directional CO fairing follows the
spoke path, while on a non-drive side it has a convex bulge. This means that at initial demeanour a Metron Disc could pass for a normal front wheel, though with a advantage that it can be straightened like a customary Metron 90. The usually time Vision would need to assist
is to reinstate a damaged spoke, when they can mislay and reinstate a fairings to
allow a repair. 

Because of a new PRA hub, a latest Metron Disc is stiffer
than a prior model, and a faired construction saves 180g, giving an altogether weight of
1,100g. When a Metron 90 is transposed by a Metron 81, a front will be formed on that
wheel instead, and should come in underneath 1,000g. When asked if a circle was UCI legal, Vision pronounced that since a fairings are connected to a corner and non-removable, a pattern has
already been approved.

The new Metron Disc has an asymmetrical, faired pattern though is pronounced to be UCI legal

Other wheels

Continuing a CO celebration were a Trimax Carbon TC50s,
which are 50mm low and use a 23mm rim. These wheels are built tough, with PRA hubs, 18 front and 21 behind Sapim aero spokes and outmost boobs for elementary maintenance. At 1,450g a set they’re still very
light, and during pro group contrast final year were ridden with a prosaic tyre over
cobbles for some time with no damage. While they have a some-more required aero form than the
81s, they’re still clever quick tubular-only wheels.

Looking like a good circle for climbing or a northern Spring Classics, a Trimax Carbon TC24 has an ultralight 24mm low tubular rim, that is
23mm far-reaching and offers a good height to make a many of a accessible grip.
With PRA hubs and 20 front and 24 behind aero spokes, a TC24s tip
the beam during 1,250g and a 3K CO used means they’re really strong. In use they
instantly feel impossibly surefooted since of a far-reaching rims, and a lack
of mass creates for really lively, flexible wheels that accelerate rapidly.

Vision’s Trimax TC24 CO wheels are impossibly light during 1,250g

Still
laterally unbending though charity some-more comfort than a deeper territory rims, the
TC24s are really versatile wheels that could also surpass during cyclo-cross. They
were so most fun that they brought out a hooligan in us, enlivening us to crack the
bike left and right, surging, braking and perplexing to dissapoint them. We couldn’t, though we enjoyed trying.

Crossing a order between CO and amalgamate rims,
Vision’s Trimax T42 CSI (Carbon Structural Integration) clinchers are a hybrid,
with an amalgamate corner connected to a constructional unidirectional CO component to yield a aero
shape. Some 42mm low and 21mm wide, a T42s run on PRA hubs with 18 front and 21
rear aero spokes, and import in during 1,720g. Part of a 2012
range, a T42s are organisation though not disturbed opposite damaged surfaces, handle
predictably and are penetrating to accelerate. On a climbs they achieved well,
keeping us in hold with some-more outlandish hardware, and refused to be disturbed by
crosswinds. Lateral rigidity was borne out by there being no snippet of rub
against firmly set stop pads, even when sprinting during full power.

The Trimax T42 CSI has a hybrid alloy/carbon corner construction

Vision’s reward amalgamate aero wheelset is a Trimax T30.
Touted as a time hearing or training wheel, a 30mm corner abyss and 18.3mm breadth allows for a accumulation of uses. With PRA hubs and 20/24 aero spokes, a span weighs 1,520g. The T30 is accessible with a tubular corner and would make an ideal
wheel for severe roads or winter cyclo-cross racing.

Using a opposite heart pattern with usually dual behind orientation and Shimano-only compatibility, the Team30 is an entry-level 30mm low amalgamate rim
with 20/24 aero spokes and a CNC machined braking surface. At 1,750g it’s a plain training wheel, and is also accessible in a 650c size. Finally, a new Team27 has a 25mm amalgamate clincher rim
and uses a same hubs as a Team 30, along with 20/24 aero spokes. A weight of 1,950g
makes these general, no-frills training wheels.

The Vision Team30 should be a plain training wheel

Other components

Also on uncover during a launch was a Vision TFA (The Fastest Aerobar)
setup, finish with Metron trigger-style aero shifters. Derived from many years of aero bar
development, a categorical bar has a one-piece CO construction with integrated
brake levers, multi position armrests and replaceable CO extensions. It’s UCI authorised and is tractable for incompatible steerer tube angles. Total weight is 818g, and Vision explain it produces 3 percent reduction drag than any of their
other aero bars.

The Metron shifters fit on a finish of the
aero extensions. The trigger allows we to upshift adult to 3 sprockets at
once, while down shifts are actuated by a elementary press of a symbol combining the
tip of a shifter. At 198g per pair, a Metron shifters are really neat, with
their changeable resource housed inside a aero extension, and a cable
running clean by to exit during a rear. They’re concordant with 10-speed Shimano drivetrains and with Vision’s possess Metron derailleurs and cassette. Asked about a probability of a full highway groupset to element this time hearing kit, Vision pronounced it was something they were operative on.

Head-on perspective of Vision’s Metron TT trigger shifters and TFA bar setup

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