This month we continue with some more pointers on how you can be a socially responsible rider
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Do not park / stop at the exit of a turn / intersection |
Luggage and pillions have their own space |
New Bike Specifications
Safe braking
Continuing with the basics, this month BIKE India teaches you how to refine your braking skills. Follow our tips on how to brake effectively without losing control over your bike
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PRACTICE BRAKING UNDER VARIED CONDITIONS |
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RIDE ON TYRES THAT ARE IN GOOD SHAPE |
KEEP THE BRAKE SYSTEM UNDER CHECK |
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SIT TIGHT TO DEAL WITH RETARDING FORCE |
DON’T GO HARD ON THE REAR BRAKE |
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SYNCHRONISED BRAKING |
AVOID ANY MANOEUVRE CALLING FOR A STOPPIE |
Fast not furious
Saeed Akhtar is in a stupor as he goes one up on Vin Diesel with a steroid injected Karizma
Photography by Sanjay Raikar
A few decades back, performance enhancement was a term very few bikers in India were familiar with. The racing community was in its nascent stage and most bikers were satisfied with whatever miniscule performance was on offer. But as time progressed, bikers – like all humans – began demanding more from their steeds and started getting familiar with acronyms like NFS, TFATF and thus NOS.
Nitrous oxide systems are still regarded as an arcane art even in most tuning circles. Movies like the Fast and the Furious series, Dhoom and the Need for Speed games franchise have elevated the NOS acronym to something of a cult yet they are also notorious for wrecked powertrains and giant fireballs. First used during World War II in Luftwaffe aircrafts to boost the power output, Nitrous Oxide or N20 is a colourless non-flammable gas with a pleasant, slightly sweet odour and taste. It is popularly known as laughing gas because of the euphoria it induces in humans. Amongst petrolheads too, it induces euphoria but of a slightly different sort. Although it is not flammable in itself, its ability to deliver more oxygen by breaking down at elevated temperatures makes it an excellent catalyst for burning Saudi Arabia’s finest in the fastest possible time. The gas is stored in liquid form and injected either into the intake manifold or right before the cylinder (direct port injection) whereupon its expansion causes more air/fuel mixture to enter the cylinder. By this simple expedient of burning more fuel, very large power gains are possible provided you know how much stress your machine can handle. The increased cylinder pressures caused by nitrous induction have to be harnessed very carefully otherwise you risk blowing off your valves or melting the piston to a molten lump in your enthusiasm. No kidding.
BIKE India has tested NOS kits fitted on the Yamaha Enticer pseudo-cruiser as well as on the screaming Pulsar 180 third gen in the past. This misty morning we ushered in Diwali with the best firecracker we could lay our hands on – a modified Hero Honda Karizma with NOS and a reworked, longer gearing. The blue Karizma featured here is fitted with a 300ml nitrous oxide can that is sufficient to propel the 223cc bike forward for 15 short bursts. Harish Chellani, the owner, importer and installer of the NOS kit, will happily supply you bigger containers for more bursts if you don’t fancy visiting the refill shop too often. Speaking of refills, a 300ml refill will cost you only 150 bucks – a fair bargain considering the power that’s on offer. Harish has found a convenient location for the cylinder in the sari guard, from where a silver coated pipe carries the gas to the inlet manifold. Call it direct injection if you will. A toggle switch, resembling the ones used in old spy movies, that controls the NOX induction is mounted inside the fairing. With it, in the on position, the horn switch ditches its usual duty as a traffic shredder and assumes the role of a catapult. Harish hasn’t fiddled with the carb yet but he has two jets of different sizes for varying amounts of nitrous boost, depending on your craving. The smaller one was on the bike and the bigger one was, well, in his friend’s pocket. Bugger!
The rules are clear and simple, you can employ nitrous boost in every gear provided the rpm is above 4000 and the throttle is fully wrung to the stop. On my first run on the expressway, I gingerly pressed the horn button while in the second gear and braced myself for the kick in the back. Although it didn’t quite qualify as a kick, the tacho needle went berserk and raced up the limiter very fast – too fast for a 223cc bike! Approaching the limiter, the engine roared like it was going to blast its innards out if I persisted anymore. Hmmm. . . . must be time to wind up another gear. A momentary slowing down of pace and it was mayhem again as I pressed the horn button hard enough to snap it off its mounting. No time for glancing down at the speedo or tacho, my eyes were too busy watching out for innocent and beautiful belles with pitchers straying on the tarmac as well as four-legged creatures answering nature’s call right in the middle of NHAI’s crowning glory. If you have not ridden anything on the far side of a Ninja 250 or a RD350, the acceleration even with the smaller jet and longer gearing (14 teeth front/38 teeth rear sprocket a opposed to 13/40 stock sprockets) is astounding. The noise too! Even in higher gears, the bike pulls with such alacrity, that it is very easy to cross sane speeds unless you are also keeping an eye on the speedo. Which frankly, we won’t recommend. Whereas this Karizma (with a reworked gearing) does the 0-60km/h run in 4.77sec sans the laughing gas, it does the same run in 3.87sec flat with it. The 100km/h mark was done and dusted in 10.06sec with NOS. Without it, the bike touches the ton at a relatively slow 13.10sec. Lack of saddle time and horrendous traffic prevented us from taking the top speed estimate, although it must be fairly high up on the stock bike. Sorry.
The downsides of this manic exercise are that it becomes very difficult to resist a dab on the horn button every time you see an open stretch of tarmac. If you are ready to compromise a fair bit on the longevity front for some adrenalin, go right ahead and install it – it’s worth every precious penny. Whether it should be used on public roads is an issue only your heart can decide. However, continuous high revving will eventually take its toll on the bike. A small price to pay, we reckon, considering the excitement that’s on offer.
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The NOS cylinder finds a convenient home in the saree guard |
The sprocketing has been revised for a higher top speed |
Faster acceleration and higher top speed hand in hand, gimme more. |
Group riding
Monsoon clouds are giving way to clear skies but leaving behind lush green landscapes with seasonal waterfalls here and there. It’s the right time to appreciate Mother Nature before the scene changes. Just the perfect time we reckon to get together with friends and ride by those beautiful mountains, spectacular riversides and breathtakingly picturesque views. Sawan S Hembram gives you some tips on how to ride in and as a group
photography: sanjay raikar
When a few people come forward for a group ride, the motive must be clear – whether it is a leisure ride or the emphasis is on reaching a particular destination. This plays a major role for all other issues associated with group riding. Accordingly, planning the ride becomes easier.
Group riding may involve individuals with different levels of riding skills, experiences as well as mentalities. It’s quite possible that only a few are familiar with the route to be followed. In such case, routes should be discussed beforehand. All riders need to know about checkpoints such as refuelling stops or food joints, etc. If the group is fairly large, it is recommended to split in smaller groups, each with at least one experienced rider and with a sense of responsibility. Sub-grouping may be done according to riding skills so that slower bikers remain in each others’ company. Exchanging cell phone numbers with fellow riders is a good idea to deal with any eventuality. It is also important to discuss beforehand how to deal with any possible crisis.
Once a biker group takes to the road, the state of affairs could become quite complex and chaotic. However, sticking to a previously discussed formation is the best idea. It is always recommended to maintain safe distance from fellow riders. If a rider in front finds a challenging situation and slams the brakes, others behind him should have enough room to react safely. Similarly, formation must be such that all riders get the maximum view of the road ahead. This is easier said than done. Remember, a rider on a bike would cover much less view (due to the helmet) in comparison to a four wheeler and further more, a bunch of riders in front of you could block the entire view of road ahead. A diagonal formation with sufficient gaps in between solves this problem to a large extent.
Another usual occurrence during group riding is that skilled riders with powerful bikes zip ahead fast. Invariably other followers push themselves hard just to keep up. Many a times this results in accidents. Less skilled riders in order to keep up enter corners at high speeds, fail to exit properly and end up biting dust, literally! You can avoid this by looking at the road ahead instead of the taillight of the bike in front of you. If there are sub-groups of faster and slower riders, such occurrences can be completely evaded.
Overtaking becomes another major issue while riding in a group. Adrenaline seekers love to overtake each other often forgetting the whole idea of a joyride. This could translate into a crisis if it involves a large group. It is better to lay out rules regarding overtaking (whether it is allowed or not) for all the riders within a group. Similarly, overtaking other bigger vehicles in a row must be avoided. While the bike in front may instantly react to any critical situation, those closely following it have little chance to do that. Also refrain from showing off while in a group.
Remember to slowdown while passing through populated areas such as towns and villages especially when there is a road sign implicating a school ahead. Even at a reasonable speed, a large group of bikers can be seen as rowdy fellows by others. If passing through populated areas at night, you must use the low beam in order to not blind other oncoming vehicles and locals on the road.
A proper interaction among all the riders results in riding as a group rather than just riding with a group. This will further increase team spirit and the joy of riding. Remember to care for yourself as well as your fellow riders. If have a pillion rider, be considerate to him/her and be extra careful. Don’t forget to wear adequate riding gear and carry a first aid kit. Enjoy your ride.
Free flow performance
The leading performance parts maker from U.S.A, Two Brothers Racing introduce a special exhaust system designed specifically for the Yamaha R15. Adhish Alawani finds out just how good it is
The YZF-R15 was launched in the Indian market more than a year ago and it raised the standard of sport biking in the country to a new level. The country’s performance motorcycle scene has been scaling new heights ever since. An appreciable change that is currently being witnessed in the Indian biker is that he has started preferring performance upgrades to the cosmetic ones these days. As a result, various options along these lines are being explored today.
After testing the performance kit from Daytona and a locally made exhaust system for the R15 in our previous issues, what we have here is the latest offering from Two Brothers Racing (TBR), USA. Specially designed for the YZF-R15, this exhaust system comes from the US manufacturer who has been making high performance racing canisters and full exhaust systems across the global range of street motorcycles, motocrossers and ATVs.
The end can of the exhaust system offered by TBR features their patented lightweight, thin wall die-cast aluminum inlets and outlets. The vertical oval canister from the M-2 series comes with the V.A.L.E. (Variable Axis Locking Exhaust) system – a method in which the muffler canister is attached to the exhaust tube without the use of welding. With the V.A.L.E. systems, the muffler assembly – the exhaust tube and canister – can be positioned perfectly on the bike before all the mounting hardware is fully tightened. Once the canister and exhaust tubes are properly aligned, the V.A.L.E. assembly locks the muffler canister to the exhaust tube assuring a perfect, leak free fit. A lot of technical science, is it? Okay, let’s talk the language a biker understands. Performance. With the data logging equipment mounted on the R15, we decided to do 0-100km/h runs on the stock bike as well as the one with the TBR system. Very frankly, we didn’t need the data logger to tell us that there was a noticeable rise in the performance of the Yammie. The R15 started pulling pretty strongly right from 5000rpm unlike the stock model which does the job from around 7000rpm. The midrange of the bike feels much stronger than the stock one making it a more tractable machine for city use. If one has to speak in terms of accurate timings then with the TBR exhaust system, the R15 managed 0-60km/h in 4.15 seconds as against 4.9 seconds of the stock bike. The R15 crossed the three digit mark in a mere 11.76 seconds with TBR which is much quicker as compared to 13.04 seconds with the stock exhaust. With an improvement of 1.28 seconds in the 0-100km/h run, the TBR system definitely does the job it is intended to do. The weight of the new exhaust system is just 2.09 kg, almost a whopping 3.5 kg lesser than the stock one, which helps in boosting performance to a considerable extent.
Apart from the fantastic performance offered by the exhaust system, there is no doubt about the cosmetics of the canister. The brilliant finishing and the upmarket styling of the muffler, like the ones on Fireblades and R1s, will definitely add glamour to your bike. However, being a pure racing product, the TBR system is loud and can technically be used only on the racetrack. Riding the R15 with this system on a daily basis in the city is not really going to be comfortable for anyone’s ears. The company claims that they will soon be coming out with the Power Tip accessory for the exhaust that will help in suppressing the sound emission to a great extent with a negligible reduction in the performance. Apart from the loud nature of the exhaust, the price is going to be another negative aspect. At Rs 19,990, the exhaust is quite expensive but then, it’s the racing performance that we are talking about and every bit of it comes at a price – especially when it is from the masters who have been delivering amazing products for quite some time in the international market. The TBR exhaust for the R15 will also be available with csarbon or titanium canisters (Rs 27,500).
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Full System |
Muffler Cap |
