I am Dhruv Panchal from Ahmedabad and I am passionate for riding bikes. I recently got my new Yamaha Fazer on 30th November 2009. Color I have chosen is flaming orange and you won’t believe, it’s really an eye catching beauty. Let me first share some idea about sport-touring bike.

Yamaha Fazer 150
A sport-touring bike is a type of bike designed for long-distance touring and heavy alteration of tracks. Although any bike can be used to tour with, designers have brought specific modifications designed to address the particular needs of riders. Common to the touring bike models is usually large displacement fairings and windshields (to offer a high degree of weather and wind protection and to distribute the air stream aerodynamically), large capacity fuel tanks (for long ranges between fill-ups), engines offering lots of end power, and a more relaxed, more upright seating position than sport bikes.

Yamaha Fazer 150 (3)

These are straightforward, versatile bikes that are not too specialized for one task, but don’t excel in one area either. Standards are used in touring, commuting, and sporting, and are good for beginners. The rider enjoys the benefits of freedom of head movement, good visibility in all directions, and easier use of the feet while moving through stationary traffic.

Now let’s get back to the subject… Yamaha Fazer. Bike dynamics is the science of the motion of vehicle and its components. Bike motions of interest include balancing, steering, braking, accelerating, suspension activation, and vibration. Further more, Bike dynamics includes all about Handling, Road Holding, and Vehicle stability.

Handling

By this, we mean the ease, style and feel with which the bike does our bidding. It depends mainly on overall geometry, chassis stiffness, weight distribution, tyre type and size. It may come as surprise to some people to learn that the rider has a major influence on the handling characteristics of the bike. Rider responses have a large effect on overall interaction of the dynamic forces that control the motion of the machine.

Road Holding

This means the ability of the machine, through its tyres to maintain the contact with road. It depends mainly on tyre type and size, suspension characteristics, weight and its distribution, and stiffness between the wheels to maintain their relationship with one another. A big enemy of tyre grip and hence road holding is dynamic variation in the vertical load at the road interface, there are many factors contribute to such variation.

Vehicle Stability

There are many types of stability and instability that can influence the bike. There’s balance stability, aerodynamic stability, etc. Formal definition of stability is the ability to maintain the intended maneuver (i.e. continue in straight line or round or corner) without an inherent tendency to deviate from our chosen path. This implicitly includes the absence of wobbles and weaves.

You all are aware about uniqueness about Fazer, but I want to present some of them according to engineering terms. So let’s take a look to some exceptionality of Macho Machine, Fazer.

Aerodynamics

We all know that aerodynamic force has two components…Lift and Drag. Lift has not the major influence on bike because of less area available at bottom. The main factor is drag….a designer always tries to decrease drag in each automobile and it becomes too difficult in the case of two wheelers as the driver itself is the frontal area on which the drag force is going to act. So Yamaha has designed a huge (In the scene of height and width) front fairing aerodynamically which slashes the air in various streams. From these streams two are deflected towards sides of the bike “1”, one to move above the driver’s head “2” (You can feel it by keeping your hand over windscreen at 70 KmPH.) and other towards engine “3”.

3

Width of front fairing is designed such that the driver’s legs can’t exude throughout of it (excluding some extreme cases) which gives smooth flow to the air stream. Another example of perfect aerodynamic design is the black spot arises at the tip of the rear. (Tip above the logo of Yamaha at rear) This spot arises after some running of bike just because of friction between air stream and body.

Another force from wind is side force. The side force produces a torque tending to make the bike fall over away from the wind, to retain balance it is therefore necessary to lean the bike into the wind. Under these conditions, the weight of the machine now acts as important factor and produces a torque which balances that from the wind force. As the big Center of mass is located near the engine in FAZER, the leaning of bike becomes so easy and controlled. So ideally it’s a combination of some conflicting requirements.

  • Minimal drag for performance and fuel economy.
  • Low frontal Center of Mass of Passenger to reduce the induced weight transfer. Low and rearward side Center of Mass of bike to reduce the unbalancing moments, and give directional stability. A good shape and value of side area that minimizes the side force produced.
  • The windscreen directs the air completely over the top of driver’s helmet and the front end slices through it like a knife. The style of the bike is a carefully engineered exercise in aerodynamics and to get desire properties of laminar flow.

Ergonomics

Ergonomics is the study of body posture, and the positioning of instruments, to create a good human-to-machine interface. “Good ergonomics” refers to how well a bike fits a rider for its intended use. Motorcycle riding positions range from the Cruiser to the Standard, and all the way forward to the Racer. Every bike you can find will be set up at some degree between these positions. As Fazer is the touring bike, it is having the seating position in between racer and standard. The rider leans forwards slightly. The feet are below the rider, not too far to the front or not too back. Seat height is 795mm which is good for almost all drivers according to their height. Below is the possible riding posture for Fazer.

2

One ergonomical problem with FAZER is about pillion seat. It’s not about uncomfortable but the slop given to pillion seat towards front is slightly higher because of which the pillion passenger could be skim on driver at the time of braking.

Steering Geometry

Steering geometry is the collection of key measurements (lengths and angles) that define a particular bike configuration. Primary among these are wheelbase, steering axis angle, fork offset, and trail. These parameters have a major influence on how a vehicle handles. Fazer has 1335 mm of wheelbase which is in the best range (1100mm to 1600mm) for touring bike. Wheelbase has a major influence on the longitudinal stability of a bike, along with the height of the center of mass of the combined bike and rider. In accordance to longitudinal stability, Bikes having more wheelbase (Cruiser Bikes) are difficult to balance in moving condition while short bike (City Bikes) are difficult to balance in stationary condition. Fazer has the moderate wheelbase which gives both benefits.

1

Next terminology is Trail, which is the horizontal distance from where the steering axis intersects the ground to where the front wheel touches the ground. Trail can also vary as the suspension activates. As telescopic forks compress due to load transfer during braking, the trail and the wheelbase both decrease. Trail directly changes the amount of wheelbase and decides the ability of bike to steer. Touring bikes are built with small trail to allow the rider to control a bike weighed down with baggage.

As a consequence, an unloaded touring bike can feel unstable. As we know, Fazer is a modification of FZ which has 101mm of trail to make the bike stable in unloaded condition as well as in city traffic. Another benefit of moderate trail is…the contact point of tyre with road surface is always remains behind the intersecting point of steering axis with road surface. So finally the Center of Mass for steering system always remains in front of the steering axis, which helps to steer the bike in the direction of a lean. Next unique improvement in steering system is Drag type handle bar which is nearly straight across to create a forward-leaning and aerodynamic riding position. It also provides ease to turn the bike.

Suspensions

Many people don’t know that their bikes are not fresh piece. Each vehicle is tested on special track for squeak and rattle testing. The major rattles and shocks are absorbed by suspension systems. Fazer has robust front suspensions having 41mm diameter for inner tubes and 130mm travel in max conditions. It doesn’t allow transmitting the sharp shocks even at 75KmPH. The max travel of 130mm doesn’t changes the position of center of mass of steering system, and always allows the smooth turning in the direction of lean as stated earlier. As we all know the benefits of 7 step adjustable, rear mono-cross suspension, I am not listing them here.

Wheels & Tyres

Tires are always remain in loaded condition ever your vehicle is stationary. Main forces acting on tires are listed below.

  • Weight of vehicle – In stationary condition
  • Constant vertical load – In stationary condition
  • Tyre overturning couples – In turning condition
  • Perpendicular load of the tyre – In turning condition
  • The resulting side force and moments – In moving condition
  • Due to the action of the drag force and the longitudinal tyre forces, load transfer arises from the front to the rear wheel. This increases normal load on the rear tyre. – In moving condition
  • The imposed braking force and acceleration forces

So, tyre designing is not an easy job for designer. Yamaha has designed the best tyres for FZ series. Many people think that the rear wide tyre is just for look…it is only a humble thinking. The main purpose for having a wide tyre is best stability at higher speed and worst road surfaces, better weight transfer in braking and acceleration as well as turning.

Yamaha Fazer Chicken Strips

The main disadvantage with this wide tyre is chicken strips. As shown in photograph, the two side portions of the tyre are remaining almost unused because we are not habitual to tilt our bike too much while taking turn. These strips are known as chicken strips. The middle portion which is used mostly, gets wear after long run while the side strips remain unused. This condition leads to splitting of tyre and also up to burst… But who cares about this long term fatigues. I mean, the benefits from this wide tyre are incredible.

Brakes

A 267mm diameter Disc brake having two piston caliper at front….a perfect component to stop this macho machine within 6 to 8 meters at 70 KmPH without lifting rear wheel. The rear drum brake is not too effective at higher speed. Driver has to remains reliable only on front brake. The optimized design of front disc gives excellent balancing and heat dissipation.

Expected Improvements:

  • Change in Electricals for having both Lamps “ON” simultaneously
  • Location of front number plate
  • Slope of pillion seat
  • Kick Start should be there because every body doesn’t know how to start while trouble
  • Some more sporty color
  • Effectiveness of rear drum brake

Points to Remember:

  • It’s a touring bike. don’t expect more power initially. Touring bikes are for high end power. Pick it up smoothly and gradually increase speed for better performance.
  • Avoid modification in head lamp electrical. It is unsafe for every electric item (Wiring, switch, ECU, Battery etc.) on your Fazer. Also avoid use of mid position of High / Low beam switch for the same.
  • Replace the side covers if possible as I did from FZ-S which is black in color and looks awesome (See photo). It costs around 2400 Rs. Fazer has silver and they look very poor.
  • I saw many FZs and few Fazers having modified mufflers like R1. Never do that because it increases back pressure on the engine. It directly affects Mileage and exhaust emissions.

Verdict

It’s really a good machine for new comers and those having extensive travelling, if you don’t care about mileage of 40kmpl. You will find all the features like performance, ergonomics, aesthetic and “X” factor also. I think Yamaha was out of its track during last few years. But now they came back with some performing beauties and doing excellent.

Regards,
Dhruv Panchal

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  • Deepak

    Another great article which has added priceless value to BikeAdvice. Excellent work Dhruv, I really enjoyed the article. As a token of appreciation, I am going to send you a 1:12 Scale model of Suzuki GSX-R 750 to you! Send me your address 🙂

  • suketu

    excellent explanation with ease of technicality & ergonomics point of view DUP

  • Tushal

    Hi Deepak and Dhruv, great one. Deepak, am leaving regular comments, can i get one scale model too, hehehe…
    Yamaha seems to have got back their premium image which they had lost few years back when they tried YBX, YD125, Libero, Crux, Fazer (old one) etc. The current models might be costly but still, thats what we want from Yamaha rite? We dont want 35K bike. Even if its costlier by 15% than competition, we would buy it. Yamaha should continue with their current trend. Whether they sell 10% or less of HH’s sales, doesnt matter. It has that class and prestige, hope RX100 fans agree.

  • BikeBhp.com

    A great informative review.

  • Kool bro…lookz lyk u hav been doing auto-mechanical engineering

  • Aalap

    koool brother, awsum info… every single word in ur article interested me… im also a tourer, i might nt b a gr8 tourer like u but i too hav a dream trip whch i wish to accomplish b4 mi teenage ends!!!, a 7000kms trip(goin n coming bak) to Ladakh frm Hyderabad(my native)…
    i hav done small tripz to near by places, near mi location…
    mi biggest till nw is a 615kms trip(3days & 2 Nights)…
    v r on a plan for a bigger one nw, a 1700kms trip, this is gona b a 5-6 days trip…

    n one more thng, im nt a professional, im a student doin mi B.Tech under CSE stream…

    i would love to stay in kontact wid u, i want to noe more abt bike touring frm u… plz mail me on aalap.redla@gmail.com … thank u 🙂

    Aalap

  • Tushal

    Hey Deepak, one thing i have noticed in Fazer is the lack of crash guard. I have seen in superbikes that eventhough they dont have any crash guards, they still have small rod protuding out from the frame just below the indicators, which protects the frame from rubbing the roads in case of a fall. I dont think even R15 or Ninja 250 has it. Can you just tell what kind of guard that is…… Is there any option to fit them into our current Yamahas / Ninjas?

  • Tushal

    Oh sorry i missed the crash guard on fazer. May be my comment would hold good for R15 / Ninja…..

  • Dhruv

    Thanx Deepak for ur appreciation….and I’ll send u more articles about bikes if possible….I am glad to spread knowledge about bikes.

  • Dhruv

    And prince_omer…u r right. Good prediction.

  • Jay

    Very well written article with coverege of minute details. Really appreciate the effort taken and displays interest in your bike.
    I am aware of goodness in Yamaha bike and fully agree to your article.
    You are a true biker. Keep it Up.

  • adesara alpesh

    GOOD ARTICLE……MAN….

    NICE TECHNICAL POINTS….

    GOOD JOB DONE BY YOU….

    KEEP IT UP….

    HAVE A NICE RIDING AHEAD THROGHT LIFE…..

    ALL THE BEST…..

  • fas

    Those diagrams are just awesome, how did you do that? One of the best reviews of the FZ to date.

  • Irsha

    A very detailed study about Fazer…very impressive..need more type of such reviews for other bikes too…like Hunk,GS….etc

  • Abhi

    Dhruv, this is one awesome review about the Fazer, which I’m going to buy shortly. I have a few doubts [In fact many] So please give me your e-mail address. Thank you. 🙂

  • Sohel

    An awesome article bro..
    hope to get more from you in near future.
    I just have 1 simple question to ask, I will be goin for a 1500 km plus tour on my FZ-S in another 10days and would like to know what kind of tools to be carried and what maintenance aspects I should look during the ride?

    you can write me on sohel1069@gmail.com. or just post it on the site, will be helpful 4 others aswell.

  • Gordon Graham

    hey,,i too own one fazer..got one in oct itself when it was jus out..been plannin on some mods since then..had changed the 35w headlight bulbs with two spare 55w bulbs from my innova..the power output is very much noticable..i dont think the yamaha wirings are too cheap to fry out with that power small power hike..
    then i had the plans to change the side panels into blacks as mine is fully black one..but found it a heavy job as the bottom most piece is a solid metal piece connected diretly with the chassis..so was very musc reluctant to pull it out..jus wanted to kno how much each of the panels cost u..
    also i’d like to kno if its possible to replace the air-filter to K&N and if is of some use doin so..pls do reply soon..
    pls mail me at glad.gordon15@gmail.com

  • This is the best review i have seen till now on this site. I too own a fazer black one, Its really one of the best bike. I’m Loving It.

    Fazer –> LOVE It or HATE It, But U cant IGNORE IT.

  • Dhruv

    Thank You All for your comments..
    Tushal…my FAZER has crash guard, u can observe it in photo and as ur comment about superbikes…its not crash guard..I think u have seen a steering damper. As each superbike has pure clip-ons handle bar, each bike is equipped with steering damper. A steering damper is a damping device designed to inhibit an undesirable, uncontrolled movement or oscillation of a vehicle steering mechanism.
    Alap & Sohel….I’ll send u some basics about touring on ur emails ASAP…
    Abhi….my email is dhruvautoengg@yahoo.com
    Gordon Graham…FAZER’s side panels are divided in three parts…two are made from FRP and third one footrest bracket is aluminum alloy cast. FRP covers are easy to replaced and cost 460+130 Rs. for each side. footrest bracket need some exercise to replace and cost 620 each. I did these at dealer point only..b coz they have enough tools and quite good workers….

  • Dhruv

    Gordon Graham…I forget to write about air filter..if u choose appropriate K&N, then & then it will help u to decrease the amount of dirt and also help in periodic maintenance.

  • luv

    a gr8 review.. i will buy a bike widin a week or 2.. plz suggest b/w dis yam fazer.. the p-220.. or the R15(hate dose puny rear tyres).. waiting eagerly 4 an answer.. thanx in advance..

  • @Dhruv

    Did you have ur bikes crash guard as a standard accessory are u buyed it and get it installed. How much is the crash guard, will it be available in yamaha showroom.

    Thanks
    Vamsi

  • Tushal

    @Dhruv: Hey no no. I just remembered where i saw that. I saw that in a tv article on mod-bikes. Some guy in Mumbai or Delhi (not sure) does custom bikes (high end – very very pricey). He mentioned that he uses some kind of black metal cap on both sides of the frame. If the bike falls, only that metal cap would rub the road, not the frame (as they are too costly, cant afford such silly mistakes). But may be this is restricted to custom bikes (he builds some really good cruisers too).

    One more doubt. I have seen some Ducatis, where the rear wheel has just one swing arm. The right side is just naked. No swing arm or shock (well thats coz of monoshock). How come a bike doing 200KM+ manage with a single arm at the rear.

  • Tushal

    Ducati 996 is an example. For that matter i have always thought how the autorickshaws have their front wheel balanced only from one side. Won’t the wheel bend off. Even the old scooters had one side springs, Only now we have dual shocks upfront for scooters. How?

  • Srinath

    Awesome writeup. For a moment I thought I was reading an article on bike characteristics from an automobile engg text. You have exceptional technical know-how. Keep up the good work and best wishes with your ride.

  • Gordon Graham

    hey..how did u get ur crash gaurd installed..cos ive bben lookin around for one,,but in vain..need one urgently as i started scrachin it up after a couple of low speed drops..pls give me a detailed info on how u fit it??is it the stock piece of any other bikes in the market?? pls do reply fast..

  • Vineeth

    Excellent review. Can I get the fazer fairing on my fz 16? Shall it effect the ergonomics or is it harmful in any way? I am ready to shell out 8-10k.

  • Dhruv

    Tushal…here is ur solution…These single-sided swingarm are strong, lightweight swingarms. The advantage of a single-sided system is that the wheel can quickly be taken out and replaced. Not really a huge advantage for we, but for Moto-GP style racing, it does make a huge difference for the pit crew. Single-sided swingarms need to be pretty heavily engineered because they bear the all the stresses from the rear axle offset to one side. With the traditional double-beam swingarm, the design needs to have longitudinal stiffness to stop it from bending. With the single-sided design, it needs to also have torsional stiffness to stop it from twisting under the load. As a result, single-sided swingarms are a lot larger and have a huge amount of cross-bars inside them.
    Now about autorickshaws…these suspensions are known as leading link or trailing link depending on arrangement. In this, the wheel is mounted on specially designed link. one end of link is connected with frame and free to move. on other end wheel is mounted. Between frame and link…u will find the shock absorber. Thus a triangle is formed between link (free to move), frame (rigid) and shock absorber(damping device) to provide suspension effect. i think, its need deep study…I can write an article on it if u wish…

  • Anand

    Hey there, gr8 review , i’ve got a fazer and of the same colour . your crash guard looks good , pls post more photos highlighting the crash guard , where u bought it and how to fix it .also , what are your thoughts on K&N AIR FILTERS, do u know which all models might be compatible with it and which one would be best for it . my friends who own fz’s say that sound difference after installing the filter is quite addictive .and i’m kind of tempted .i’ve run about 6500kms.Pls advice . hope to get a reply soon .thnaks

    Anand,
    Trivandrum

  • Tushal

    Hey Dhruv thanks. Well, am not a great auto engineer, so this is enough. But i have always liked the nakedness of the Ducatis on their ride side. Looks really yummy. For other guys here, just check the images of Ducati 996, you can see the right side been naked. Awesome engineering. Thanks once again Dhruv and thanks Deepak for letting us have some good chats like this. And pls try to get some info on KTM 125 concepts pls.

  • Tushal

    And looks like many other people are asking you about crash guard. My initial guess was rite. Fazer didnt come with crash guard but you have one.

  • Dhruv

    Ya tushal…and all…i fortunately got my crash guard in standard accessory. In ahmedabad, this crash guard is a part of standard accessories. I don’t know about your respective cities. So….sorry bikers, i don’t have enough knowledge about it.

  • sreekanth

    hi bro nice article…… ur bike really luks good……. but i want to know about crash guard its not getting in hyd…….. is that fazer’s or any other bike’s…….

  • geo

    another gud article….. and the best review i have seen for the machine……

  • kartik

    Hi,

    Is there a way I can modify the standard handlebar to clip-on on Fazer.
    Is it really a problem to have both the headlamp turn on while driving.

    Thanks,
    Kartik

  • MANU P S

    nice article …u r great [;)]

  • Sunny

    I bought the Fazer after a good deal of research and analysis of the bikes available in the market. My opinion in a nutshell- a well made and stylish bike with sportbike aspirations but in reality it’s an accomplished econo-streetbike in the guise of a sports-tourer. Adequate in city traffic but woefully under-powered for highway or distance riding. Yamaha deserves credit for packaging but messed up by not providing an adequate engine.

  • Manu

    Hai
    I am planning to buy a bike…. I consider yamaha fazer n tvs apache rtr 180…
    Am a tourer to pls help me

  • pallab kumar borah

    hi, my name is pallab, from assam, and i got my new fazer around a month ago. i have already rode it for around 1800 kms by now. i do long distances once a month, around 250kms or so. the bike is great, except for the head lights. i keep the switch in the middle to make them both glow together( looks better with two lights on). A guy even suggested me to change the wiring a bit to make both the lamps work as dipper and upper simultaneouly. i have seen a few fazer on the road who have done so. Is there any demerit in doing so.

  • Saurabh

    Hi Dhruv, Once again Excellent knowledge sharing session. Whatever information you gave is good, i would i like to add few more.. but just with a comparitive study with other bikes.
    1. Riding posture : What i have learned is Riding with inclined ur back is unconformatable specially for long tours. Imagine u r driving on startight roads after half an hour you will definately try to straigten your back. Here is comparision.. Bullet Riding posture is i would say perfect for touring.. as you dont have to tilt ur back, next is karizma.. Karizma riding posture is also staright back, the only problem with karizma is the knee angle. People complain about slight discomfort in knees after travelling say 200 kms or more.
    Staright back doesnt mean stiff vertical posture.. but a slight C formation of your back.
    Personally.. i have found FZ series riding posture is good for short trips but not for long tours, wide handle angle also adds a bit discomfort to your journey.
    2. Talking on comfort Seat cushion plays a very important role. Less cusion gives discomfort for long rides, and more cusion gives unneccsaary irritating support to Hip sides. Consider Karzima has perfect cushion, & FZ has a bit Low cushion.

    Correct me if i am wrong.

  • Krishna

    Fazer is a very good bike when it comes to touring.One exception is the pillion rider seat , its very small. and you should be careful at pit holes

  • Kiran

    Ya , nw i decided to buy fazer from all the list of yamaha bikes i selected like other fz series and r15. i optimized my 150 cc bike use more convenient in fazer and i booked a black edition today

  • subhajit

    Hi, Dhruv. I just brought a new Yamaha Fazer White on 30th september, and it’s the first one sold by my distributor in West Bengal. It’s really a good bike. I sorted it out from a huge range of choices, but I am over-satisfied. But one thing, it has gone only 500km till now and as the first service is not done, I am getting only 30-33 kmpl mileage. But I never ripped it more than 40kmph as I stay in a congested town nearby kolkata and my papers are not done yet to go for a long ride. I am expecting a 40-42 kmpl and 45 in long, not more than that. Can I get it after the first service of 1k kms?

    • subhajit

      I need a quick reply. Iwill be updating the pics and videos here with a review soon. everybody will love the color, I expect.

  • Badri Iyer

    Hi Dhruv! Very nice article…very informative….could you do the same analysis for a Karizma R as well….that would be really appreciated…..thanks in advance! 🙂

  • Badri Iyer

    Hi Dhruv! Can I have your e-mail id? I’d like to ask you some technical queries about bikes and your help will be greatly appreciated. Thanks a lot!! 🙂

  • kabilan

    sir i am in pondicherry i want to buy racing kit for men pls tell some shope