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Wednesday, 01 July 2015 @ 02:40 AM ICT
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The Honda RC213V-S Street Legal MotoGP Bike

Motorcycle NewsAnd you thought that the Ducati Desmosedici MotoGP bike with headlights was expensive at nearly 3 million Thai Bath? Honda has just released details of its equivalent, the Honda RC213V-S (the S for Street), and it will set you back at least double that amount. That's before optioning the Sport (think:Race) kit which takes power from 160 horsepower to over 200 horsepower...

The Honda RC213V-S, is based on the Honda RC213V that Marc Marquez rode in the 2013 and 2014 MotoGP world championships, only without the trick stuff like pneumatic valves and seamless shift gearbox. But Honda reckons 80 percent of bits from the race bike end up on the street machine, of which it is suggested 250 will be made each year

Components common to both machines include the swingarm, the slipper clutch, the 17-inch magnesium wheels, the forks, adjustable footrests and foot controls, and most of the Brembo brake components.
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Changing Sprockets and Motorcycle Geometry

Modify & MaintenanceChanging the final drive sprockets not only affect acceleration and gear patterns, it'll alter your motorcycle's geometry in a massive way and could need remedying depending on how you ride. Adding a tooth (or two) onto the rear cog is a good, cheap, effective modification for trackdays.

But it will also shorten wheelbase and boost the rear's ride height.

The general rule of thumb works on a 2:1 ratio (adding a tooth is usually 2mm extra ride height and vice versa) though every motorcycle is different with differing linkage ratios. You'll find the motorcycle will steer quicker and squat less on corner exit, but you may also find that rear-end grip is diminished slightly. If you like it, fine, but reducing tide height or even preload could be advisable after a session of testing.
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Valentino Rossi Underlines Yamaha Motor’s 60th anniversary at 2015 Goodwood Festival of Speed Debut

Motorcycle RacingValentino Rossi shone as a special guest at the 23rd edition of the Goodwood Festival of Speed, where Yamaha Motor Co., Ltd. celebrated its 60th anniversary.

After a stunning race at the TT Assen Circuit yesterday, where Valentino Rossi won his third race this season, the 111th in his career, starting from pole position, today the Movistar Yamaha MotoGP rider made his first ever appearance at the prestigious Goodwood Festival of Speed, which carried a theme of nostalgia and pride in the growing interest in motorsport, as Yamaha Motor Co., Ltd. took the occasion to celebrate its 60th anniversary.

The nine-time World Champion was specially invited by Lord March to make his debut at this famous event as a guest star. Rossi traveled straight from the Dutch GP to the UK to be able to attend the event, where he was accompanied by Yamaha Motor Co., Ltd. Executive Vice President, Takaaki Kimura, Yamaha Motor Europe N.V President, Kazuhiro Kuwata, YMC Motorsports Division's General Manager, Kouichi Tsuji and Yamaha Motor Racing Managing Director, Lin Jarvis.

They had the pleasure of joining a star studded guest list including numerous famous sportsmen, celebrities and VIPs, for a gala dinner and ball on the Saturday evening at Lord March's grand estate, before the action started the morning after.
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The WSBK Ducati Akrapovic Exhaust Discussion

Motorcycle RacingDucati not so long ago unleiled a set of Akrapovic exhausts on their WSB factory bikes that were radically different from the already unique set-up of the road bike.

Their two silencers under the sump that put gases out down and away from the motorcycle changed to two silencers in the same location, but only one of these was a silencer in the conventional sense. The other one exited higher up and behind the rider's right foot. They cost a fortune – each set over 10,000 Euro (around 340,000 THB) – but that was not the bone of contention for some.

A few rivals said that Ducati broke the rules of the class, in that the racebike pope design has to follow the same geometry as the roadbike. So it the roadbike has one pipe on the left and one on the right, you have to follow that rule. But as each silencer on the Ducati exits on the same side as the original, and given that the design can be changed, that is enough for the rules.
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Yamaha MotoGP Conquers the Cathedral with Fifth Consecutive Double Podium

Motorcycle RacingMovistar Yamaha MotoGP rider Valentino Rossi came out victorious today after a stunning race at TT Circuit Assen, that was decided in the final meters before the flag. Teammate Jorge Lorenzo also gave a strong performance to secure third.

Movistar Yamaha MotoGP's Valentino Rossi completed a perfect weekend at the TT Assen with an impeccable victory, the 111th in his career and his third of the 2015 season. Teammate Jorge Lorenzo also did a superb job at the overcast but dry track, coming from eighth on the grid, to take Yamaha to its fifth double podium of the season.

Valentino Rossi kicked off the Dutch Grand Prix from pole with a dream start to take the holeshot. He held a 0,426 advantage to Marc Marquez after the first lap. The Doctor tried to break away from his encroaching rival and the rapidly approaching Lorenzo and responded by dipping under the previous lap record, but was unable to shake his pursuers off.

Rossi had Marquez on his tail by lap four, but used his YZR-M1's nimble nature to the fullest to keep him at bay. He held on to his position until the Spaniard made his move going into turn one with seven laps to go, but the Doctor was far from defeated. Refusing to let his rival go he stuck close to Marquez and bided his time for four laps before retaking the lead.
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The GPX CR5 - 150cc Commuter Work Horse

Motorcycle ReviewsThe GPX CR5 is a modern looking 150cc motorcycle intended as a commuter motorcycle which gets you from A to B in a smooth and efficient manner. We have seen the GPX CR5 with hard luggage on some motor shows and we feel that you could use it as a touring bike.

Some people would maybe see a familiar look to the GPX CR5, that's probably because it's based on the Yamaha YBR design, with here and there some extra plastic. The engine is a four-stroke, single-cylinder, air-cooled, 150cc engine running through a five-speed gearbox. The engine provides about 12 horsepower at 7,500rpm with a good amount of torque.

Maybe it was the looks that drew me towards the GPX CR5 in first place with its small and compact set-up with upright handlebars and a comfortable seat that isn't too high (770mm) off the ground, which makes it a doddle to mount and dismount with ease.
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MotoGP – The Difference Between Last Year

Motorcycle RacingWhat a difference a year makes. At one-third distance in last year's MotoGP championship, Marc Marquez led by 58 points; at the same point this year he's 49 points behind the leader. Which means his hopes of joining the elite band of premier-class hat-trick winners have just about gone. Unless, unless... he can recreate the miracle of 2014, when he came the first rider in modern Grand Prix racing history to win ten GPs in a row.

If Marc Marquez is to beat men-on-a-mission Jorge Lorenzo and Valentino Rossi, it will take him at least ten victories to get back on equal terms with the Yamaha pair.
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Assertive Start to Assen Weekend for Yamaha MotoGP

Motorcycle RacingMovistar Yamaha MotoGP's Valentino Rossi and Jorge Lorenzo enjoyed a strong opening to the TT Assen weekend, securing third and sixth respectively in today's combined session times sheets.

The Movistar Yamaha MotoGP team kicked off the action at TT Circuit Assen today during the first free practice sessions ahead of Saturday's race. Valentino Rossi made most of the unexpected sunny conditions and landed third place in the combined session times, slightly ahead of teammate Jorge Lorenzo who posted the sixth fastest time.

Both riders love the prestigious Dutch circuit and were quick to find their pace while testing a new chassis in the first morning session.

Eager to the hit the ground running, Valentino Rossi began his Assen challenge with finding a solid basis set-up before closing the session with a time attack. His first attempt to a hot lap immediately moved him to the top spot in the ranking order. Knowing he had more in him, he continued to further improve his leading time over the next two laps and signed off FP1 with a 1'34.357.
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The Yamaha Twin-Clutch Transmission

Motorcycle PartsSeamless gearshifts are the current cutting edge of MotoGP technology. As with everything which helps Valentino Rossi and Jorge Lorenzo go faster on the track, the technology is being targeted to make the leap into production motorcycles in the not-too-distant future.

But while the systems in a MotoGP motorcycle only need to last a race weekend before they can be stripped, checked and rebuilt, components in a production motorcycle will need to endure almost endless kilometers. The challenge for manufacturers is how to offer it road legal motorcycle customers a durable system which can mimic those fitted to a MotoGP race bike.

A recent Yamaha patent reveals the company is well on the way to developing a road-going seamless transmission, using technology that's arguably more advanced than the race motorcycles, allowing even the clumsiest gearshift to be perfect.
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Back Protectors a Good Idea

Motorcycle PartsMotorcycle racers have been wearing back protectors for a long time; well aware of the benefits should they part company with their motorcycle unintentionally. But road riders are taking advantage of the protection offered by them too.

Back protectors will absorb energy from an impact and help prevent damage to the spine and ribs – as well as internal organs. A 2012 survey by a riders organization in Europe revealed that 80 percent of riders in Europe use a back protection, but only 68 percent were CE approved and fewer than half (48 percent) were separate – i.e. not fitted into a jacket or suit. In Thailand the numbers of people using back protectors is obviously lower. But where do you start? Back protection comes in a number of forms and for a range of budgets…

In most modern motorcycle jackets there will be a pocket at the back for a back protector insert to be fitted, or there may even be a protector included in there. If there isn't or you're unhappy with the level of protection – sometimes they are just pieces of foam – then you can upgrade them by buying inserts.
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