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© John Levison
The Ridley Dean FAST
Posted by: John Levison
Posted on: Wednesday 3rd September 2014


Tags  Dean FAST  |  Ridley  |  Ridley Bikes  |  Ridley Dean  |  Ridley Dean FAST


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I recently visited the home of Ridley Bikes (www.ridley-bikes.com) in Belgium, and got to see up close and personal their new Triathlon/TT bike, the Dean FAST, their latest pro-level superbike offering.

The bike pictured below features the Campagnolo equipment of the Lotto-Bellisol team, but a full bike should be available with Shimano Ultegra Di2 gearing and deep rim (aluminium braking surface) wheels for EUR 5,000. Not cheap, but on the context of other bikes on the market, not completely wallet busting either...

Ridley Dean FAST - Future Aero Speed Technology

In the showroom at the Ridley factory

Ridley Dean Fast

The front end of the bike features an integrated top tube / stem arrangement to optimise aerodynamics.

Ridley Dean Fast

A very smooth front end - the front brake isn't just integrated with the frame, it is part of the frame. Called F-Brake™, on the Dean FAST this features all internal cable routing to improve air flow past the braking hardware. The down tube also has a distinct cutout for the front wheel.

Ridley Dean Fast

A closer look at the internal cable routing to the front brake.

Ridley Dean Fast

The rear brake, a Tektro number in this instance, is tucked away under the bottom bracket

Ridley Dean Fast

Known as F-Surface™, the down tube and seat tube of the Dean FAST have visible 'grooves' which actually reduce drag - "making the boundary layer turbulent, but keeping the main airflow laminar" was the explanation given - and backed up by some video testing which we were shown.

Ridley Dean Fast

The tube shape is the now relatively familiar 'truncated aero tube', but with the addition of the F-groove

Ridley Dean Fast

View of the bespoke and multi-adjustable aerobar on the Ridley Dean FAST - which we were told weighs half that of the popular Pro Missile equivalent.

Ridley Dean Fast

Though not especially obvious in my image below, the fork legs include the third of Riley's patented innovation, the F-Splitfork™. These channels in the fork guides the 'negative' flow created by the movement of the wheels away from the spokes, to allow the wheel to rotate with less drag

Ridley Dean Fast

For ease of use, the Dean FAST uses vertical dropouts, and these are adjustable and replaceable to reduce the gap between tyre and rear of seat tube, depending on tyre width - while making wheel changes and centering the wheel simple.

Ridley Dean Fast

The bike is available in four standard size - but here's the thing, if you want one but it doesn't fit you, or you'd like different geometry, the Dean FAST is available to special order with custom stack and reach. You'll pay extra of course, and will have to wait for it - but if you must have the bike and it must be to your specifications...

Of course, the bike is fully prepped for the electronic revolution, with Shimano Di2 battery storage in the seat tube of Campagnolo EPS battery location in the top tube.

Ridley are making a significant push towards the triathlon market - so expect to see this bike being a key part of that drive.

CLICK HERE FOR MORE INFORMATION ON THE DEAN FAST


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