Giant Defy Advanced SL
Sixty-five million years ago last Wednesday, at the end of the age of the dinosaurs, a man walked into his local bike shop. “I want a bike that looks good, that I can race on. I want it to be stiff and I want it to be comfortable. I don’t want to have an aching back if I ride it all day. But I want it to go fast up climbs and help me keep up on the down hills. And, I want it to be the same as the bikes ridden in the ProTour.” “Sorry sir,” the owner said. “They don’t make that kind of bike.”
Well they do now…
Giant re-released their road bike fleet in 2011, once again to a fair bit of acclaim. I say ‘once again’ because 2008 was the previous launch, a big one for the Taiwanese manufacturer. At that time Giant made some pretty big leaps with their range. It was out with the old and in with the new. They kept their TCR flagships but replaced their OCR range with a new model called Defy. Put simply, OCR model bikes were designed to have a more upright geometry than the out and out racing TCR models. Upright geometry has been around for a long time, but whether it was a problem with marketing, design or public perception, the OCR series never quite took off. This was something that Giant intended not to happen again and the replacement of the OCR with the Defy signalled this. Improved quality of carbon, better paint jobs and more effective marketing did the job to a certain extent. There was a significant technological improvement in the carbon lay up which resulted in lighter and stiffer frames. This combined with better compliance, making bikes that had performance, but were still comfortable. In fact those 2009-2010 Defy bikes, particularly around the Shimano 105 level, were some of the best value bikes on the market. But somehow there was still something lacking. Enter the Defy Advanced SL.
The Defy Advanced SL takes bikes with a higher front end to a new level. This frame has everything that the Team Rabobank TCR bikes have. Both use Toray’s T800 carbon fibre, which Giant claim has ‘the greatest stiffness to weight ratio on the market’. Both are also made with Giant’s new ‘Continuous Fibre Technology’ process. What does that mean in non-marketing speak? Well, put simply, it means fewer pieces of carbon in the lay up. The process of building a carbon fibre frame like this one is very interesting. To the bystander it looks like a combination of patchwork and papier mache. Technicians sit at benches with boxes and boxes of carbon fibre cut out into various shapes. They have a pattern in front of them and they fit the shapes onto each other, each one slightly overlapping, to eventually form a frame. In its unbaked state it is slightly floppy but still recognisable. Now it stands to reason that everywhere that these pieces overlap adds extra weight. So if you could make a single piece of carbon do the job of four or five overlapping pieces then you would be able to make a significant weight saving. This is exactly what Giant has done. On the Defy SL they have also replaced aluminium parts such as the bottom bracket sleeve and the rear dropouts with carbon versions, used a moulding process that leaves no excess fibres and changed the shape of the seat stays from a wishbone to separate tubes. Giant have also changed their cooking process to a system they call ‘Fusion’. This is a double mould process which requires the frame to be baked twice. It means that less carbon is needed on the joints, all adding up to a significant weight loss. The medium size Defy Advanced frame weighs in at 799g, 20 grams less than the equivalent TCR model, which is quite something considering the longer head tube.
Even a quick look at this bike will show two things. The oddly shaped seat mast and the huge front end. Called ‘Overdrive 2’, this top tube uses a new 1 ¼-1 ½ inch tapered headset. Whether this becomes yet another new standard remains to be seen, but Giant have anticipated the complaints from bike shops by ensuring there is a large range of available parts. You can get stems for these bikes from FSA, Syntace and Ritchey as well as Giant’s own brand. The Giant stem on our test bike is quite simply enormous, like something a Theo Boss might use, but a more standard looking model is also available. Bothe versions have 10 length options. Giant claim this new set up gives a whopping 40% increase in steering stiffness. More about that later. You’ll also notice that the cables now go into the front of the head tube instead of the side to make a straighter line for better shifting. It also comes ready for Shimano’s Di2 groupset, with fitted ports for that inevitable upgrade.
The seat mast is very quirky looking indeed. The idea here is to give extra compliance for rough roads or longer days in the saddle. Indeed this, as far as I can see, is the only point of having an integrated seatpost. This look has been achieved courtesy of the ‘Fusion’ technique mentioned above and Giant claim that it has 15% more compliance than the adjustable seatposts in the lower models. The saddle clamp has been given a makeover and now has considerably more adjustment. This combined with the lower position of the seat stays, longer chainstays (15mm longer than TCR) and shorter top tubes (10mm less than TCR) make for a very comfortable all day ride. In fact Rabobank used these frames in some of the Spring Classics, particularly those with long stretches of pave. Matti Breschel riding the Defy Advanced in the E3 Prijs Vlaanderen stayed in the front breakaway group all day, finishing 11th overall.
Giant were the first bike company to introduce integrated seat masts and one criticism I have always had with them is the difficulty of finding suitable saddle bags and tail lights. Often the straps on these accessories are too short so I was pleased to find that Giant manufacture or at least, have somebody else manufacture these products to suit. Actually, it would be nice to see some bike manufacturers simply supply some of this stuff with the bike. I know it’s probably not done so that bike shops can sell them as extra, but I bet plenty of shops end up throwing them in free to help clinch the deal. It could be a nice feelgood exercise if they were to be supplied as standard with the bike.
Home Brand Parts
Giant have been pouring a lot of money into creating their own parts and accessories line in recent years, with good results. Apart from the Fizik Arione saddle and Fizik bar tape, everything here is Giant’s own brand. I was impressed by the choice of handlebars. This carbon fibre model is called the Contact SLR and in keeping with the ‘all day’ theme is an aero style, with a nice flat area for resting your hands. Much better than a standard round bar.
I was similarly impressed with the Giant branded wheels and tyres. When I was first told that Giant were going to be making tyres I gave a kind of inward groan. I suspected that these would be a cheap commuter-style tyre. How wrong I was! These tyres are extremely good. Called P-SLR1, to match the wheels, these are a front and rear specific, 120TPI combo. They’re foldable race clinchers and extremely fast and I would have like to have had them when we did our tyre shootout a few years ago. I am a big fan of tyres with a round profile and that is exactly what these babies have. They also, as a useful little aside, have wear indicators embedded along the centre. Once the tyre gets down to the point where you can no longer see these, then it’s time to change to a new pair. The good news is that they are also available as aftermarket items.