Photos from Girish Krishnan's post — Someday, You ll Own A YAMAHA

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Informational post for Learners, regarding #Yamaha #Rx bike engine #Bearings.

Bearings are a very basic unit of any engine, so should be taken VERY SERIOUSLY !

There are basically 2 types of bearings used in Rx Engine, one is Needle Roller bearing and other is Radial Ball bearing.

Total 7 bearings are there in engine (excluding 1 bigger end bearing in Connecting Rod)

2 ball bearings are used in crankshaft, 2 in Gearbox, 2 needle bearings are used in Gearbox shaft to crankcase joint and 1 needle cage bearing at piston wrist pin.

Some technical information:

Every ball bearing has some clearance between cage and balls, which is denoted by C and followed by a digit. Higher the digit, more the clearance. Clearance means, the amount of free space between the balls and cage.

Automotive bearings are heat treated, specifically crankshaft ones, those are treated with nitride, to withstand high operating temperatures, #SKF denotes heat treatment with HN3 coding.

Crankshaft automotive bearings (specifically where lubrication is done by oil pump) , has a broad and sharply inclined shoulder, to facilitate the proper oil flow from cylinder/transfer ports to bearings in crank via a piped hole.

Technical specifications :

Crankshaft radial ball bearings -

6304 C3 HN3 (Left side)

6205 C4 HN3 (Right side)

Gearbox bearings -

6304 CN (CN means standard/normal clearance)

6303Z CN ( Z means, metal shield as a seal at right side)

Gearshaft support bearings, needle roller -

NRB 152512 (Right nd left)

Piston wrist pin -

Cage needle roller ( specifications unknown to me, Yamaha oem is recommended)

There is one more bearing in bigger end of connecting rod, its specification is unknown to me. It usually comes with con rod as a set.

For more information, scroll down to Pictures and read captions.

- Sukhpreet Singh (admin panel)

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Kochi — Someday, You ll Own A YAMAHA

I'm listing down some imported spares which has arrived along with the prices. Interested people can call on 9037794619 or whats app me on 9037902070.

1) RxZ disc assembly - 25,000 (Rxz Disc plate, Rxz Disc Hub, Master Cylinder, Caliper and outer forks) only 1 set available.

2) Rx King CDI - 2,500.

3) RxZ Disc Plate - 6500.

4) Rxz Caliper - 6000.

5) Rx King meter assembly - 8000 (Speedo, RPM, Pilot lamp and all the socket wires and bulbs)

6) NPR, Japan Imported piston kit - 3500 (Piston, Piston rings, clips, piston pin) sizes available (1.25, 1.50, 1.75 and 2.00mm)

7) Yamaha Izumi Piston kit - 3000 (Piston, Piston rings, pin, clips, bearing) sizes available (standard, 0.25, 0.50, 0.75, 1.00).

Only interested buyers contact me. window shoppers please stay away.

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    YRC T-shirts — Someday, You ll Own A YAMAHA

    YRC T-shirts for sale.. sizes available "M-38"... can be shipped to anywhere in India with additional courier charges.. Interested people can call or whatsapp me at +91-9037902070

    YRC T-shirts

    ₹500 - Kochi, India

    YRC T-shirts for sale.. sizes available "M-38"... can be shipped to anywhere in India with additional courier charges.. Interested people can call or whatsapp me at +91-9037902070

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      Useful tips while going on a long ride — Someday, You ll Own A YAMAHA

      Useful tips while going on a long ride!

      It’s every new rider’s nightmare: You’re cruising along down the freeway, when suddenly something goes wrong with your bike, and you’re stuck on the side of the road.

      Many riders know a thing or two about basic motorcycle maintenance and repair — part of the fun of owning a bike is tinkering with it. But beyond the opportunity to do your own customizing, knowing a little bit about how your bike is supposed to work can make a world of difference if something goes wrong while you’re on the road.

      Here are three common motorcycle problems riders face while riding, and how you can get back on the road without calling a mechanic.

      Broken Clutch Cable You’re riding along and suddenly the clutch cable snaps — the clutch lever pulls without any resistance, and the clutch remains engaged. Don’t panic — get to the side of the road smoothly and safely and inspect the damage.

      If the cable broke at the lever, wrap it around a finger or two and try pulling to engage the clutch. If that doesn’t work, move the clutch by attaching locking pliers onto the clutch actuator arm, near your left foot on most bikes. Move the pliers when you would normally grab the clutch lever to shift. Keep in mind that this is a temporary fix, and you’ll want to replace that clutch cable as soon as possible.

      Dead Battery You’re on a long ride, and you decided to stop and take some pictures of the local wildlife. Unfortunately, your battery’s now dead. If you’re riding with another biker, jump-starting your bike from theirs is a fairly easy task.

      You can also push-start a motorcycle. Find a declining section of roadway so the bike will be rolling downhill. Set the ignition and engine kill switches to On, walk the bike in neutral until you gain speed then shift into second gear. You’ll want to release the clutch as quickly as possible without sliding the rear wheel.

      Flat Tire If you’ve never had a rear tire go flat while riding, here’s what happens: the steering will suddenly become imprecise and the bars will start to waggle. If this happens, slow down (do not brake hard, as this will only cause additional loss of control) and pull over. Inspect the tire for damage — was it underinflated, or did you pick up a nail?

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        The Yamaha RD350 is an absolute legend so much so that the bike still enjoys a... — Someday, You ll Own A YAMAHA

        The Yamaha RD350 is an absolute legend, so much so that the bike still enjoys a legion of followers who are now taking to Change.org to ask Yamaha to bring it back. There’s a twist though. The petition, started by Martin Zachariah, is asking Yamaha to bring back the RD350 in the vintage design, but with modern mechanicals.

        Since two strokes are all but dead in today’s motorcycle world, the petitioner has asked for a very powerful and torquey 4 stroke engine in the resurrected bike. The petition is addressed to the current CEO of Yamaha India, Mr. Hiroaki Fujita.

        Recreating the vintage RD look won’t be much of a problem for a global motorcycle giant such as Yamaha. However, matching the feel of the old bike could be a problem, especially since a four stroke twin cylinder engine of similar capacity may not be able to match the sheer torque that the 347 cc two stroke engine of the original RD350 put out.

        A four stroke parallel twin with about 350 cc would need to be a sufficiently low revving motor if it has to torquey enough. Generally, such motors are high revving, and produce most of the torque at the upper reaches of the power band. To make something that recreates the RD magic at under 5,000 rpm will be the big challenge.

        The Yamaha RD350 that was built and sold in India between 1983 and 1989, featured a 347 cc parallel twin engine available in two states of tune. In LT or low torque state of tune, the engine made 27 Bhp while the HT or High Torque state of tune yielded 30.5 Bhp at 6,750 rpm.

        The RD got a 6 speed manual gearbox as standard, weighed 143 kgs, and could hit a genuine top speed of 140 Kph. The RD350 remained the fastest bike produced in India for more than 20 years after its discontinuation..

        RD 350 is still the King of the Streets!

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          Photos from Girish Krishnan's post — Someday, You ll Own A YAMAHA

          The 5 best touring motorcycles bike for doing distance

          You’ve bought all of the riding gear, got the maps, worked out a route and you now want to ride as far and as long as you can. So which type of motorcycle should you take touring?

          There’s a huge selection to choose from. Big tourers, mid-size sport tourers, cruiser/tourers, but here’s five bikes that are RideApart’s choice for doing distance. All five of these will all eat up the miles, plus get you, a passenger and your luggage to wherever you’re going quickly and in a fair degree of comfort.

          BMW K 1600 GTL

          Back in August, we reviewed BMW’s fully-faired, long distance tourer, the K 1600 GTL (and its sibling the K 1600 GT) and gave them both a thumbs up with the GTL getting a 9/10 rating as we felt it redefined what a big modern touring bike should be. Very fast, extremely comfortable and very capable. Although it’s a big motorcycle at 703 lbs, it just doesn’t ride like a big, heavy bike. We felt the K 1600 GTL represents everything that BMW knows about making great motorcycles.

          As a cross-country tourer the GTL comes fully loaded but, despite all of the kit, we were hard-pressed to categorize this BMW as, out on the road, it’s almost as involving as a superbike. So instead we opted for the new term “Supertourer.”

          Not only can you ride it for miles and miles, you can get off it feeling you’ve just ridden around the block. This is in part down to its powerful 1,649cc engine and its claimed 160 hp and 129 lb.-ft. of torque. Being an inline-six, it’s super smooth and it delivers that torque at very low revs.

          The GTL shares quite a lot (frame, engine, brakes etc) with its slightly less expensive sibling, the K 1600 GT ($21,500), but the seating position on the GTL is different (you sit more in the GTL rather than on the bike like the GT), the foot pegs are lower and further forward and the bars are higher and closer to the rider.

          At $23,950 (including ABS as standard) it’s not cheap. But the GTL comes with an impressive standard equipment list that includes hard bags and a sophisticated media system that allows you to pair sat nav, phones and MP3 players. If you want to ride great distances, with a passenger and in great comfort look no further than BMW’s K 1600 GTL.

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            Riding Tips. Finding the right Position — Someday, You ll Own A YAMAHA

            Riding Tips: Finding the right Position.

            Experienced motorcyclists are sometimes the worst people to ask about riding techniques and positions. Complicated things, like countersteering and body position, can become so second-nature that they will wind up saying things like “just relax…” and “steer with your shoulders…” “Just look in the direction you want to go and the bike will do it.” Yeah, ok. They say these things because the actual mechanics have become second nature to them (and so are any bad habits they have acquired). But for those to whom the mechanics of riding aren’t second-nature, or who want to hone their technique, there are three basic principles to body position and riding a motorcycle…

            Now the particular body position that is right for you depends on two things: your shape and size, and your bike’s shape and size… In particular, where your torso and arms are in relation to the bars when you are seated square over the footpegs.

            So for example, many people think sportbike riders lean forward for a tucked-in position in order to be more aerodynamic… The truth is, that is the only way to lock-in on a sportbike and steer quickly. Here’s what I mean, there are three basic parts to your body position on a motorcycle:

            Seating. The purpose of your seating is to lock you onto the bike so that you can turn and brake and accelerate while seated in a stable position. You should not need your arms to at all to stay on the bike once you are seated properly. How do you know you’re seated properly? On most standards and sportbikes, proper seating means you should be able to stand straight up on the pegs and balance yourself…then sit straight down…wherever your butt winds up sitting straight down is the basic seating location for you on that bike. For larger cruisers (where the foot pedals are in front of the seat) it’s even easier. Wherever you can sit and reach the pedals easily while still bending your knees slightly, that is generally the correct sitting position/location for you on the bike.

            Experienced motorcyclists are sometimes the worst people to ask about riding techniques and positions. Complicated things, like countersteering and body position, can become so second-nature that they will wind up saying things like “just relax…” and “steer with your shoulders…” “Just look in the direction you want to go and the bike will do it.” Yeah, ok. They say these things because the actual mechanics have become second nature to them (and so are any bad habits they have acquired). But for those to whom the mechanics of riding aren’t second-nature, or who want to hone their technique, there are three basic principles to body position and riding a motorcycle…

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              The birth of YAMAHA RXZ. 3 — Someday, You ll Own A YAMAHA

              The birth of YAMAHA RXZ.. <3 ;)

              It was back in 1996 when Yamaha was working on a bike as an alternative of RX-100 in order to cope up with the coming emission norms. Yamaha’s R&D was working on the bike and suddenly they came to know that the government decided to put the emission norms earlier. They had to stop the production of RX-100 and they launched RXG without any test rides and we can say they launched an incomplete bike. But, that was not their fault. The bike was the biggest failure in yamaha’s history. There were a lot of complaints before first service like noisy piston rings, power loss after heating, no torque etc. The exhaust note was as good as a moped. Big disappointment for people who loved yamaha for their machines like Rd-350 and RX-100.

              Yamaha decided to work on the engine and they made that better with better power and sound and better torque but they mounted that engine on a sporty bike called as Yamaha RXZ in 1997. The bike was really a cool breeze for Yamaha. Sleek Tank, sporty tail, tachometer, integrated tail-lamp and turn-signals and bikini fairings made that bike sporty. The balance was good and the road grip was awesome. The exhaust note was better as well with a good looking exhaust.

              In 2001, Yamaha launched RXZ-135 with 5 speed gears and disc brakes. That bike is really a rocket and I can say that can compete with a shogun. I found the engine has a good torque and the handling is better as well. The exhaust is coming with a catalytic convertor with smooth note like race machines. It got racing graphics as well..!!

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                Photos from Girish Krishnan's post — Someday, You ll Own A YAMAHA

                Why 2-Stroke Engines Are More Fun Than 4-Stroke Engines?

                I always wonder why Yamaha RX 100 and Yamaha RD 350 are being vowed by the entire biker community of India, even today after decades of these bikes being discontinued from the market they are still in demand among the bikers in the after market. Both the bikes and bikes like Suzuki Shogun and Suzuki Shaolin are few other bikes to name which belong to the Elite group of bikes having 2-Stroke Engines. However the modern Motorcycle era belongs to the 4-Stroke engines but these 2-stroke engine bikes have become immortal and if I call them Legends that must not be the exaggeration at all.

                What is that which makes these bikes special? Is it the Brute performance, which these bikes are capable off delivering? or the mind numbing Pick-up they have to offer? Whatever the answer is, it is the 2-Stroke engine which is actually responsible for all these divine experiences. Now there are many questions arise in mind when we talk about these 2- Stroke engine, which we would discus step by step:

                How 2-Stroke Engines Work?

                The 2-Stroke Engines are actually simple internal combustion engines they are even simpler then 4-Stroke Engines. As we also faced complications while understanding the mechanism of 2-stroke engines explained in other sites available on Net, we would try to explain you the working of 2-stroke engines in simple and easy terms. To begin with one should understand that, one thing is common between both 2-stroke and 4-stroke engines and that is both are "engines" and the job of an engine is to produce power and torque by using mixture of Air and Fuel.

                Engine:

                The Engine mainly consists of Head and Block, the Head contains the Spark plug and in case of 4-stroke engines it also consists of inlet and outlet Valves. The Block contains Piston, Crankshaft and Connecting rod. The space between the Head and Block where there is actual combustion of mixture of the fuel and air takes place is called Combustion Chamber.

                Combustion:

                The process of combustion starts when the mixture of Fuel and Air gets ignited by the spark obtained from the Spark plug causing blast in the combustion chamber of the engine, thereby thrusting the piston downwards moving the Crank shaft which is attached with the piston through connecting rod. Each time the Piston moves forward and backward gets the Crankshaft also turn and thereby turning the wheels through the Transmission. That is how the Fuel turns into forward motion. There are four basic processes involved to complete one cycle of combustion in both 2-stroke and 4-stroke engines, namely: Intake, Compression, Ignition and Exhaust.

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                  Just in case some of you aren t sure how two stroke engines work here is some... — Someday, You ll Own A YAMAHA

                  Just in case some of you aren’t sure how two-stroke engines work, here is some review. In a four-stroke engine, each of the four essential steps of the power-producing cycle is given its own piston stroke:

                  1) Compression

                  2) Power

                  3) Exhaust

                  4) Intake

                  A two-stroke performs all the same steps, but in just two piston strokes. The simplest two-strokes do this by using the crankcase and the underside of the moving piston as a fresh charge pump. Such engines carry the official name “crankcase-scavenged two-strokes.”

                  As the two-stroke’s piston rises on compression, its underside pulls a partial vacuum in the crankcase. An intake port of some kind (cylinder wall port, reed valve or rotary disc valve) opens, allowing air to rush into the crankcase through a carburetor.

                  As the piston nears Top Dead Center, a spark fires the compressed mixture. As in a four-stroke, the mixture burns and its chemical energy becomes heat energy, raising the pressure of the burned mixture to hundreds of psi. This pressure drives the piston down the bore, rotating the crankshaft.

                  As the piston continues down the bore, it begins to expose an exhaust port in the cylinder wall. As spent combustion gas rushes out through this port, the descending piston is simultaneously compressing the fuel-air mixture trapped beneath it in the crankcase.

                  As the piston descends more, it begins to expose two or more fresh-charge ports, which are connected to the crankcase by short ducts. As pressure in the cylinder is now low and pressure in the crankcase higher, fresh charge from the crankcase rushes into the cylinder through the fresh-charge (or “transfer”) ports. These ports are shaped and aimed to minimize direct loss of fresh charge to the exhaust port. Even in the best designs, there is some loss, but simplicity has its price! This process of filling the cylinder while also pushing leftover exhaust gas out the exhaust port is called “scavenging.”

                  While the piston is near Bottom Dead Center, mixture continues to move from the crankcase, up through the transfer ports, and into the cylinder.

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                    Some bikers love drag races some bikers like doing stunts Bharadwaj Dayala... — Someday, You ll Own A YAMAHA

                    Some bikers love drag races, some bikers like doing stunts, Bharadwaj Dayala prefers to travel the world on his bike.

                    37 year old called Bharadwaj Dayala who hails from Vizag Andhra Pradesh, has traveled the world on an Indian motorcycle. He has circumnavigated the globe riding alone on a Karizma. Through his journey, he covered 5 continents and 14 countries. Dayala returned home on October 2, 2007, covering approximately 47,000 km in 18 months.

                    What's most noteworthy is that Bharadwaj has completed his trip without any sponsor. The cost of the entire trip was around Rs. 50 Lakh, which was entirely collected by his friends and well-wishers.

                    One of his biggest fears with respect to the journey was whether the bike could withstand such a long tedious journey in the first place. It was sheer patriotism that motivated him to make the journey on an Indian bike.

                    He planned the trip with great details and a lot of care; he went about getting the visas for the countries and understanding the routes and the climates. It was two years of detailed planning before the trip actually materialized.

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                      Yamaha generation. 3 — Someday, You ll Own A YAMAHA

                      Yamaha generation... <3

                      The first two stroke bike build by Yamaha YA-1..

                      YA-1 built August 1954, produced January 1955. The first bike manufactured by Yamaha was actually a copy of the German DKW RT 125; it had an air-cooled, two-stroke, single cylinder 125 cc engine

                      YC-1 (1956) was the second bike manufactured by Yamaha; it was a 175 cc single cylinder two-stroke.

                      YD-1 (1957) Yamaha began production of its first 250 cc, two-stroke twin, the YD1.

                      MF-1 (1958) 50 cc, two-stroke, single cylinder, step through street bike

                      YDS-3 (1964) 246 cc, two-stroke, parallel-twin, it used the world’s first oil injection lubrication system in a 2-stroke engine.

                      DT-1 (1968) Yamaha's first true off-road motorcycle.

                      XS-1 (1970) Yamaha's first four-stroke engine motorcycle (650 cc twin).

                      Yamaha YZ Monocross (1975) First production motocross bike with a single rear shock.

                      Yamaha YZ400F (1998) First mass-produced four-stroke motocross motorcycle.

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                        YEIS legend 2 stroke Yamaha Rx100 135 RXZ — Someday, You ll Own A YAMAHA

                        YEIS legend 2 stroke Yamaha Rx100\135\RXZ

                        \RD350

                        INDIA 2 STROKES

                        Two-Stroke Engines How It Works...

                        The two-stroke engine is mechanically very

                        simple. There are no valves, camshafts, etc.,

                        just the piston connected by the con-rod to the

                        crankshaft. Lubrication is achieved by mixing oil

                        with the fuel, the resulting mixture then

                        bathing all the moving parts. However, the

                        complete cycle takes only one upstroke and

                        one downstroke of the piston, so some

                        elements of the four phases of operation must

                        occur simultaneously.

                        The fuel and air are mixed in the carburettor in

                        the usual way, but instead of going directly to

                        the top of the cylinder, the mixture enters the

                        sealed crankcase, i.e. the space underneath the

                        piston. The crankcase is connected to the

                        combustion chamber in the cylinder by an inlet

                        port, sometimes known as a transfer port.

                        Opposite the inlet port there is another port,

                        the exhaust port. Both the inlet and exhaust

                        port are uncovered by the piston in the bottom

                        part of its stroke, thus replicating the function

                        of the valves in the four-stroke engine and

                        allowing gases to enter and leave the cylinder.

                        In the top part of the stroke both ports are

                        covered, sealing the cylinder. This allows

                        compression to occur at the top of the upstroke

                        and allows the power of the expanding gases to

                        be harnessed at the top of the downstroke.

                        Bottom of Downstroke - Induction/Exhaust

                        The piston has moved down, uncovering both

                        the inlet (transfer) and exhaust ports. The

                        descending piston has increased the pressure

                        in the crankcase, so the fuel-air mixture is

                        being pumped from the crankcase via the

                        transfer port into the combustion chamber. In

                        some engines (not in a Vire 7) there is a valve

                        between the carburettor and the crankcase

                        which stops any tendency for some of the fuel-

                        air mixture to blow back through the

                        carburettor.

                        Top of Upstroke - Compression

                        The piston has passed Bottom Dead Centre

                        (BDC) and is now rising. The inlet and exhaust

                        ports are both covered, so the fuel-air mixture

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                          YEIS Yamaha Energy Induction System most of you have seen this stickers in RX... — Someday, You ll Own A YAMAHA

                          YEIS (Yamaha Energy Induction System)... most of you have seen this stickers in RX 135 4 speed and in RXZ 4 speed in the generator covers and clutch covers.. this technology is also used in the 5 speed models of rx 135's and rxz's but the engine covers are different so they aren't highlighted... but do you know what it does?? what's the use of this technology?? ok!! This is a technique used for two-stroke engines, in order to optimize the power output.

                          The YEIS consists of a plastic container, which is connected with a rubber hose to the intake manifold of the engine. This creates a kind of reservoir between the carburetor and cylinder, two-stroke in the mixture in a closed gate position (little or no gas) is retained until the slide is opened again. In addition, the system works at certain speeds as vibration dampers for switching between the combustion chamber and carburetor and herschwingenden gases.

                          The YEIS provides better engine response, more torque in the lower and medium speed range and a lower by up to 10% consumption.

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                            brothers there was some link posted using my profile related to sex but its... — Someday, You ll Own A YAMAHA

                            brothers.. there was some link posted using my profile... related to sex. but its not me.. i've changed my acc pasword as soon as i saw it.. now hoping it wont happen again.. and deleted the post in each and every community.. which i saw in my notification.. it was posted in 45-50 communities around 3:00-5:00pm today... and it was very hard for me to reply to each and every1 of them.. broz.. yu ol know... i wont do this stupid sorta thing.. pls understand.. for all those who know me.. understands... :) tc.. gud ni8

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                              FREQUENTLY ASKED QUESTIONS. YAMAHA RX SERIES — Someday, You ll Own A YAMAHA

                              FREQUENTLY ASKED QUESTIONS.. (YAMAHA RX SERIES.)

                              I am starting this thread in hope of helping fellow 2-strokers & newbies in the world of 2-strokes. I will start with very commonly asked question & later will add more information as & when possible. Right now restricting the topic to Indian make single cylinder air-cooled 2-strokes upto 150cc only.

                              1. I am looking for some serious performance mods for my RX135, i want to do 140Kmph. Please help.

                              Ans:Considering the case of a stock RX135 4-Speed, the top speed is around 95-100Kmph. Lot of modification is required for even incresing the top speed by 10Kmph & yes it does cost a lot of money & energy. The bike setting can be classified in general as below:

                              Stage 1: This is the first step to porting. Main work is on exhaust port & BHP increase is to approx. 14. With every BHP gain there is approx., 5Kmph increase in Top End. A 14BHP bike will do around 110Kmph with stock exhaust. This setup is ideal for stop & go traffic. One can easily smoke all the known 150cc air-cooled 4-strokes with this setup within city limits & sometimes even in highways.

                              Stage 2: Its for those who need more grunt & more top speed than stage 1. The BHP level will be around 16 for this case with an Expansion Chamber. Good power to take on bikes like RTR160, P180. Top speeds may be around 120-122Kmph.

                              Stage 3: Now we are talking some serious porting business here. The exhaust, trasfers & the inlets are all touched upon & use of a bigger carburettor. Matching expansion chamber makes it complete. Speeds can go as high as 125-130Kmph & enought to take on bikes like P200, ZMA.

                              Fully Blown Street Legal: The port levels are almost the same as stage 3, or maybe slightly tweaked. Use of some imported connecting-rod, Imported Pistons, Imported clutch plates, 90/100Kit with matching CDI, Better & slicker imported tyres (Ex., Michelin or IRC), bigger carburettor assembly, Iridium spark plugs, fiber reeds (optional), front disc brake assembly (for safety), better rims (Ex., IRC, HH), Synthetic 2-T Oil (Ex., AGIP, MOTUL). The chasis still remains of normal RX135 & weight of the machine will now be around 100-102Kgs. This is the max possible modification that can be done with a fully blown setup. The BHP will be around 18-19 (max) with top speeds in between 130-135Kmph. With this one can try to race with an R15 on highways. I have never raced an R15 so dont ask me about the result.

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                                Info. to all — Someday, You ll Own A YAMAHA

                                netboard

                                Info.. to all...

                                I am listing down some basic differences & similarities between 4-speed & 5-speed RX135 (Includes RXG & RX-Z), which will help people to differentiate & learn more about these legendary series once produced in India.

                                1. Bore Kit (a.k.a Piston-Cylinder Kit / Barrel / Block)

                                4-Speed - '4TL00' with OEM "ART" STD piston '4Y201', Rating: 12BHP @ 6500RPM

                                5-Speed - '4TL10' with OEM "ART" STD piston '4Y201', Rating: 14BHP @ 7500RPM

                                Note1: To check the originality, the LH side of Cylinder (Gear shifter side) has ‘4TL00’ or ‘4TL10’ marking along with ‘132cm3’ (which is the displacement) and the RH side (Crank Kicker Side) has the batch of manufacturing, for ex., E1, E2, E3 or E4 (All of them have exactly similar performance, people who swear by performance of E1 being the best, is all crap.) Also if nothing is mentioned or some other type code is mentioned, then the Cylinder is a fake, except for '4Y201' which is the original block of RX-K.

                                Note2: The Cylinder packing has the following description on it:

                                1. RX135 4-Speed / RXG / RX-Z 4-Speed: "Cylinder Kit RXG"

                                2. RX135 5-Speed / RX-Z 5-Speed: "Cylinder Kit 5-Speed"

                                Note3: Displacement calculation

                                For Std RX135 being a single cylinder engine, we have the following inputs,

                                Bore Dia = 58mm

                                Bore Radius = 58/2 = 29mm

                                Bore Radius Squared = 841mm2

                                Stroke Length = 50mm

                                Pi = 22/7 = 3.142857 (Corrected upto 6 decimals)

                                Number of Cylinders = 1

                                Displacement in mm3 = Stroke x Bore Radius Squared x Pi x No. of Cylinder

                                = 50 x 841 x 3.142857 x 1

                                = 132157.143

                                Displacement in cm3 = 132157.143/1000

                                = 132.157 (Corrected upto 3 decimals)

                                2. Piston Kit

                                The OEM Piston kit for Indian RX135 series are from "ART" Japan. For Indian models piston sizes from STD to 0.5mm are available (in steps of 0.25mm). On careful observation of the piston, one can identify if it is original or not. Simply turn the piston upside down & inside we can see "ART" & "4Y201" clearly written. This is the proof for original piston. The piston kit essentially comprises of

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