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Tech news: Deda goes even more oversized

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Dedacciai's carbon Cross frame is light with a claimed weight of just 1,050g (size M) and also includes a flattened top tube underside for easier shouldering.

Dedacciai's carbon Cross frame is light with a claimed weight of just 1,050g (size M) and also includes a flattened top tube underside for easier shouldering. (Image credit: James Huang)
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Dedacciai bonds in a pair of titanium seat stays into the Temerario instead of the more common carbon fibre.

Dedacciai bonds in a pair of titanium seat stays into the Temerario instead of the more common carbon fibre. (Image credit: James Huang)
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Bigger is better? Deda says the enormous 35mm diameter on its new Trentacinque bar and stem boosts bending rigidity by 50 percent over a standard oversized setup.

Bigger is better? Deda says the enormous 35mm diameter on its new Trentacinque bar and stem boosts bending rigidity by 50 percent over a standard oversized setup. (Image credit: James Huang)
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Deda will offer the Trentacinque bars in red, white, or black.

Deda will offer the Trentacinque bars in red, white, or black. (Image credit: James Huang)
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The new Deda Trentacinque handlebar features the RHM semi-anatomic bend.

The new Deda Trentacinque handlebar features the RHM semi-anatomic bend. (Image credit: James Huang)
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The matching Deda Trentacinque stem is still light at just 136g (110mm) despite the larger handlebar clamp diameter.

The matching Deda Trentacinque stem is still light at just 136g (110mm) despite the larger handlebar clamp diameter. (Image credit: James Huang)
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Deda's Vincente stem is designed to be gentler on carbon steerers with a unique clamp design that secures to both the inner and outer diameters.

Deda's Vincente stem is designed to be gentler on carbon steerers with a unique clamp design that secures to both the inner and outer diameters. (Image credit: James Huang)
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Deda's popular Zero100 stem is now offered with a blue accent stripe.

Deda's popular Zero100 stem is now offered with a blue accent stripe. (Image credit: James Huang)
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The Dedacciai Chrono features teardrop-shaped tube sections, smooth joints, and internal cable routing to help decrease aerodynamic drag.

The Dedacciai Chrono features teardrop-shaped tube sections, smooth joints, and internal cable routing to help decrease aerodynamic drag. (Image credit: James Huang)
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Sometimes simpler is better: the Dedacciai Pista frame is made in Italy with seamless chromoly tubes and a standard threaded bottom bracket and straight head tube for maximum component compatibility.

Sometimes simpler is better: the Dedacciai Pista frame is made in Italy with seamless chromoly tubes and a standard threaded bottom bracket and straight head tube for maximum component compatibility. (Image credit: James Huang)
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The down tube on the unique-looking Temerario is simply enormous as it approaches the tapered head tube.

The down tube on the unique-looking Temerario is simply enormous as it approaches the tapered head tube. (Image credit: James Huang)
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Dedacciai's striking Temerario flagship is mostly carbon fibre save for the unique titanium seat stays. Dedacciai says it's the stiffest frame in its range and yet still weighs only 1,050g (claimed weight, size M).

Dedacciai's striking Temerario flagship is mostly carbon fibre save for the unique titanium seat stays. Dedacciai says it's the stiffest frame in its range and yet still weighs only 1,050g (claimed weight, size M). (Image credit: James Huang)
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The seatmast head on the Dedacciai Super Scuro uses a simple angle adjustment mechanism.

The seatmast head on the Dedacciai Super Scuro uses a simple angle adjustment mechanism. (Image credit: James Huang)
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Slender box-section seat stays attach to the sides of the seat tube on the Dedacciai Super Scuro.

Slender box-section seat stays attach to the sides of the seat tube on the Dedacciai Super Scuro. (Image credit: James Huang)
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Deda's unique Lokomotiv crank design is based on the idea that the chainrings require the most structural support during the power stroke but little elsewhere.

Deda's unique Lokomotiv crank design is based on the idea that the chainrings require the most structural support during the power stroke but little elsewhere. (Image credit: James Huang)
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The Nerissimo frame uses a standard threaded bottom bracket.

The Nerissimo frame uses a standard threaded bottom bracket. (Image credit: James Huang)
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The angular styling hides the tapered steerer.

The angular styling hides the tapered steerer. (Image credit: James Huang)
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The Nerissimo is Dedacciai's no-frills road model with more basic tubing shapes and a threaded bottom bracket but it still includes modern features such as a tapered head tube and carbon dropouts. Claimed frame weight is 1,150g for a medium size.

The Nerissimo is Dedacciai's no-frills road model with more basic tubing shapes and a threaded bottom bracket but it still includes modern features such as a tapered head tube and carbon dropouts. Claimed frame weight is 1,150g for a medium size. (Image credit: James Huang)
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The squared-off top tube flows smoothly into the dual seat stays.

The squared-off top tube flows smoothly into the dual seat stays. (Image credit: James Huang)
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Deda's new Quattro 2 forged aluminum stem sticks with a 31.7mm diameter and boasts a claimed weight of 166g (110mm).

Deda's new Quattro 2 forged aluminum stem sticks with a 31.7mm diameter and boasts a claimed weight of 166g (110mm). (Image credit: James Huang)
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The new Deda RHM02 bar uses the company's latest 'Rapid Hand Movement' semi-anatomic bend and double butted 6061 aluminum construction. Claimed weight is 295g for a 42cm (c-c) size.

The new Deda RHM02 bar uses the company's latest 'Rapid Hand Movement' semi-anatomic bend and double butted 6061 aluminum construction. Claimed weight is 295g for a 42cm (c-c) size. (Image credit: James Huang)
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The new Deda RS02 forged aluminum seatpost sports an easy and secure two-bolt head. Claimed weight is 333g for a 31.6 x 350mm size.

The new Deda RS02 forged aluminum seatpost sports an easy and secure two-bolt head. Claimed weight is 333g for a 31.6 x 350mm size. (Image credit: James Huang)
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Deda caters to the fixie crowd with its Street-issimo handlebar and Cortissimo stem.

Deda caters to the fixie crowd with its Street-issimo handlebar and Cortissimo stem. (Image credit: James Huang)
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Dedacciai's Super Scuro sports striking lines, high-modulus carbon fibres, nanotube-reinforced resins, a tapered front end, and internal cable routing. Claimed frame weight is just 990g for a medium size.

Dedacciai's Super Scuro sports striking lines, high-modulus carbon fibres, nanotube-reinforced resins, a tapered front end, and internal cable routing. Claimed frame weight is just 990g for a medium size. (Image credit: James Huang)
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The squared-off top tube and down tubes provide lots of reinforcement for the tapered head tube on the Dedacciai Super Scuro.

The squared-off top tube and down tubes provide lots of reinforcement for the tapered head tube on the Dedacciai Super Scuro. (Image credit: James Huang)
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The top tube and seat stays on the Temerario are offset from each other at the seat tube.

The top tube and seat stays on the Temerario are offset from each other at the seat tube. (Image credit: James Huang)

Bigger is better in the Deda camp these days as the Italian component maker has introduced a 35mm-diameter handlebar and stem system that is claimed to offer a 50 percent increase in bending stiffness over its standard 31.7mm offerings.

But isn't 35mm too big, you say? Perhaps, but not when you consider the finished diameter of a 31.7mm bar when handlebar tape is taken into account and the fact that the new M35 is intended to be unwrapped up top.

Even so, some riders will still prefer the additional grip and cushioning of bar tape and the extra stiffness could prove too punishing for slighter riders or on rough roads, though this is just the sort of thing that should appeal to sprinters in particular.

In addition, Deda has managed to increase the clamp diameter without adding much of a weight penalty. As compared to a comparable 31.7mm-diameter Presa and Zero100 bar and stem, the Trentacinque stem is only 26g heavier (claimed weight of 136g for a 110mm extension) and the M35 is actually 4g lighter (210g for a 42cm).

Whether or not the new size will gain wide acceptance is another question entirely but if nothing else, it presents yet another option for those that are looking for that sort of thing and in all fairness, Deda isn't introducing it as a wholesale replacement for the current oversized standard.

In contrast, Deda's Vincente stem concept was decidedly more radical with a unique internal-external steerer clamp that's claimed to be gentler on carbon tubes while also being more secure than traditional setups. Separate aluminum clamps and titanium hardware keeps the Vincente pretty light, too, at a claimed weight of just 137g.

Other new component offerings occupy more value-oriented segments of the market and include the RHM01 (round cross-section) and RHM02 (aero cross-section) aluminum road handlebars, the Quattro2 and Zero1 forged aluminum oversized stems, and RS01 and RS02 two-bolt aluminum seatposts.

Frames, too...

Sister company Dedacciai's ever-expanding collection of frames will total nearly a dozen models for 2011.

Sitting at the top of the heap is the intriguing Temerario, said to be Dedacciai's stiffest option with simply massive squared-off carbon fibre tube sections, a tapered 1 1/8"-to-1 1/2" front end with similarly enormous fork blades, and unique bonded-in titanium seat stays.

Dedacciai is also among the shrinking minority that continues to favour integrated seatmasts, with the Temerario sporting a deep oval cross-section throughout its length - and naturally, it's topped with a Deda alloy head.

Despite the liberal helpings of surface, claimed weight is still rather impressive at just 1,050g for a medium frame, plus another 330g for the matching fork.

Dedacciai's second-tier Super Scuro is also a new design, though more an evolution of the company's existing Scuro RS than a wholesale clean slate like the Temerario.

Changes from the RS include a more heavily bolstered tapered front end and bottom bracket area, larger squared-off chain stays, smaller seat stays, and internal cable routing - and again, still with an integrated seatmast.

Claimed weight is lighter than the Temerario at just 990g for a medium frame though the fork is heavier at 420g.

Occupying the less expensive end of the scale is the more straightforwardly designed Nerissimo. In contrast to the radically squared-off tubing of the Temerario or Super Scuro models, the Nerissimo uses mostly round or ovoid shapes throughout and a standard, non-integrated seat tube.

There's still a tapered front end, however, and the slim seat stays suggest a reasonably comfy ride. Claimed weight is 1,150g for a medium frame plus another 410g for the included fork.

For races against the clock, Dedacciai will also now offer the Chrono model, which includes the usual teardrop-shaped tubes, curved seat tube, giant chain stays, and slim seat stays favoured by many modern designers. Finishing things off are an aero-profile carbon seatpost and internal cable routing.

Claimed weight is 1,250g - which is quite light for a dedicated aero model - plus another 390g for the non-tapered carbon fork.

Finally, there's a new 'cross carbon frame as well, aimed more at providing a slightly softer ride in the rough than outright stiffness with its flattened chain stays, relatively slender seat stays, and non-tapered fork.

The bottom of the top tube is notably flattened for easier shouldering, too, cables are routed across the top tube to protect them from contamination, and mud clearance looks fairly reasonable.

Claimed weight is 1,050g for a medium frame and the matching fork will add another 550g.