Third mode?? Someone care to explain this the guy only told me two modes no third mode.

hmm lot of service camps happening in places other than Delhi .


Edit: Guys i am getting some Error in the Contact Us page of Suzuki from Yesterday can anybody confirm this please?

Looks like new data to a long debate we've been having..

I personally didnt feel any difference in those 3 modes though..
but i usually ride only in eco(98% of the time). and right now getting mileage of 47 with eco..(may be because i stopped using shell petrol )

@adi: the 3rd mode is when there's no eco or pwr on the console.

Confused !!!

@ Sivakumar

The explanation of Eco mode and Power mode with different CDI timing seems a little contradicting to me.

1. In a carburetor system opening the throttle means more air is allowed into carburetor and hence more fuel is drawn into engine.

2. The CDI timing changes the response of ignition timing based on throttle position in a given mode( This point is my guess not sure whether this is true). If you want better response you increase the sensitivity. This timing scheme can increase the throttle response.

But how can this help in getting better fuel economy by having two different mapping ?

If we want high performance we set ignition timing very sensitive to engine rpm. In eco mode setting, when we open throttle air flow increases and hence more fuel is drawn. How can a timing system provide fuel economy, given that what ever the CDI timing is fuel is always drawn when the throttle is opened .

Even with a different timing setting since the fuel is already drawn what can be done to increase the fuel economy other than to burn the fuel completely.

When we consider a Fuel Injected system, specific volume of fuel is injected into the air to form air-fuel mixture. In such a system the responsivity can be adjusted by regulating the fuel injected in different modes based on throttle position. This system can increase the fuel economy, since the injection rate is different in each mode. (Such as used in high end liter class bikes making their power output more manageable)

I highly doubt a CDI timing system can provide better mileage on a carbureted system other than increasing the mileage. Sorry guys for a long post, but i just cant get rid of these questions.

bettery head lite mod

Hii all I got my black GS150R on may,09. Have done 7500KM so far with no problem .getting decent mileage around 45-50 in city with rough driving.

from the first day i want to battery head lite mod to my GS150R now on last Wednesday i spent 2 hours to understand wiring of gs 150R (got some electronics knowledge) and make a line diagram .

Going to do this when i receive my OSRAM night breaker 60/55 Watt bulb hope next week.

Item needed

1) A pair of 12Volt Mico relay
2) Osram 60/55 Watt bulb(Or any bulb)
3) Some wire



See diagram you will found Two wiring connector below your GS150r fuel tank as shown .
I will upload image once it will be done.


Sorr for my bad english

+1 to anup,Right said....I have enough experince drive safely even though it depends on others riders too ...One of my friend drive his activa in 45kmph on a big road on safe side,but one guy drive rashly cannot control his yamaha dashed behind him make him fell..Till we return home nothing safe in this kind of indian roads.As u told teens moves the side mirror for style ,turning their head to see while turning bcos of no side glass,involved in accident....

Thanks Akfara.

Thanks for sharing this information. Have you done any load shedding by removing pilot lamps? The image you provided is not that much visible, it will be great help if you upload image on some other site (picasa,photobucket, tinypic etc)and provide a link to that image. There is a tutorial how to upload photos please go through it http://www.xbhp.com/talkies/coffee-l...tml#post181437

In xBhp they reduce the resolution of image, thanks for your help. Actually i wanted to do it myself and was waiting for my exams to finish.

Have you already done the whole process, it would have been great if you had taken some snaps of what all wee need to do step by step. We can even put it on Do It Yourself section if moderators permit.

i join the bandwagon who say Rear brakes Suck big time they are worst than my Honda Eterno 7year old Brakes. Really i was trying to give a feedback on this but the site is not working.

I read somewhere there is some kind of solution to this.

but how would you resolve the battery drainage issue. A 55watt directly from the battery will drain out for sure. Unless you rewind the coil and convert the bike to full dc and also change the rr unit there is no way out. Another way is to connect the pilots to the back light power input and use the saved power for the head light. Please let us know if you have a way out. I do want to improve the head light but am apprehensive about rewinding the coil. Raj

@ Adi

Its true that they don't have bite compared to others, but it will do just nice. Even in a high end bikes the rear brake rotors are only big as those used in R15. I think many people depend heavily on rear brakes and this leads to the premature wearing of brake pads. They end up using front unconsciously during emergencies and bike lock ups.

I had some issue with rear brake and on first service they changed the brake spring and shoes which began to lock when applied on low speeds. So the best way is to use both front and rear all time. Many suggest to use rear brakes first and just as the forks drive into shock ups apply front brake which will avoid much safer stopping.

Go to your service centre and ask them to adjust it. Most time this will make it more effective. And also one thing Adi, even with the same brake set up bikes with smaller tires will be more effective. Its like using a small wrench and long wrench, even if the force applied is same, the resultant force is higher in long wrench.

hey man the speed sensor is on the rear wheel for gs-150R!
i think u better know that much! this is to the person who said that the speed sensor is on the front wheel!

when the ignition timing(time of sparking) is retarded we will get good fuel economy, and when it is advanced we will get more power.

in engine spark plug initiate the spark at the end of compression stroke(before piston reaching TDC), and combustion starts after piston reaching TDC, this small time period between the two event is called ignition lag

considering economy mode: spark plug initiate the spark well before TDC (20-25deg before TDC), Combustion starts immediately after TDC. But as we get the peak pressure pulse near TDC, there will be not much effect in the crank shaft(Mechanical advantage is almost zero in this position for this piston crank mechanism), But the heat released in the combustion is utilized atmost as it has more time after combustion till exhaust stroke.

power mode: spark plug initiate the spark almost near TDC, so the combustion starts well after TDC (around 40deg after TDC), at this instant it has better mechanical advantage, due to this the pressure pulse pushes the piston downwards. But there is no much time period inbetween combustion and exhaust stroke to utilize most of its thermal energy.

In short
1. in power mode, the engine is high revving and less efficient (exhaust gas temp carries most of the heat).
2. in eco mode, the energy is utilized better than power mode,
3. as in eco mode engine is running in dedicated mode, if sudden burst is given
the point of combustion moves towards TDC, pressure pulse cant be utilized in moving piston, instead it dissipates on engine casing, which we hear as harshness, knocking, engine beat while accelerating

yeah actually i am used to using both Brakes no point in using one and rear are not the best to use since when we apply them the motion of the bike is going front.

p.s I went today to have a drive noticed some sound from my front disc brake is this normal?
Any nowdays getting lot of queries regarding this bike in roads have people stare at it and few days back almost 4 people have asked about the price,mileage etc. But one thing is for sure all those who asked knew about the bike was in the market but nothing more so Suzuki needs to get some marketing done for this.

tough GS-150R

man tow months ago i was really shakenwanna know why?
i was accelerating down a cc road not too wide just enough for a lorry to fit in!!
i had gone down that raod every day in my school days: say 9 years since u can only remember from 1st or 2nd grade!well back to the point i was gunning the bike in 3rd or 4th gear not remembering precisely about 45 or 50 kmph,all of a sudden a tvs star city came out of no where and turned onto the roadi herd the breaks sqeal[my brakes] and the next thing,he just gave a little hit and i feel sweing around all the while the brakes are screaming like hell,and the bike gone to the end of the road and into a drainage cannal it was only about a foot deep and a foot wide for god sakes and the next thing i remember was standing next to the bike as the bike's two wheels are in the canal and the bike was standing on the gear rod and the crash guard,i dont know how i ended up in that situation but i was shaking like hell it took me a minute or 2 to realize what was going on,but now iam fine,no injury glad,the bike got scraped bad on the left pilot lamp where he hit my bike and at the end of my front left suspensionbut who cares the bke is strong if it was R 15 it would be a goner man i am now barely 17 and has to wait another year for licence! had done 6500km on my gs,only problem was iam 5-11 almost 6 still growing but only weigh about 52-55, so its like pulling a car out of the tight parking placesi has to put some more fat on my body as u can see!but i love my bike [ATTACH][/ATTACH]

I didnt get one thing.. in eco mode, with sudden burst of acceleration, the point of combustion moving toward TDC, why does it cause knocking ??
Isnt that how you explained power mode works (with spark at TDC)?

And i'm not much into mechanical engineering so i cant comment anything, (only studied a bit in first year) but have you tried verifying any of this ?
(like check the exhaust gases in both modes to see if its different for example )

Thanks bro, for giving such a detailed explanation. So like advancing the opening of valves, we can do the same with the ignition timing. This kind of information is really hard to get.

So in short in economy mode all the drawn fuel is fully utilized while there is some loss in power mode as exhaust valves open before the piston reaches the BDC. So this ignition timing, opening of valves and optimization cannot be achieved in all rpm, some trade offs are always necessary depending need of user.

@ Falcon

The four cycles, influx, compression, combustion and exhaust. The only power cycle is combustion cycle, all the other cycles the inertia of the crankshaft with the balancer and flywheel.
First stroke: Inlet valve opens, outlet valve closes air-fuel mixture drawn into cylinder by the downward motion of piston.
Second stroke : Both the inlet and outlet valves are closed, the piston moves from the bottom most position(BDC) to topmost position(TDC).
Third stroke: When the piston reaches the TDC both valves are still closed, spark plug fires and ignites the fuel pushing the piston down. Fourth stroke: Outlet valve opens, piston moves from BDC to TDC pushing all the gases out of cylinder.

Of these four strokes, third one is the power stroke,so to smoothen the rocking power delivery flywheels and balancer shafts are used. The opening and closing of valves exactly when the piston reaches the TDC and BDC is only an ideal condition. So the inlet valve is opened even before the exhaust stroke is completed and similarly the outlet valve is opened before the piston reaches the BDC, since the gases cannot move in and out of cylinder.

Now going to ignition part, when the piston is moving from the BDC to TDC its doing some work as its compressing the air fuel mixture. But in ECO mode the spark plug fires before the piston reaches the TDC, so while the piston is yet to reach the TDC and now the fuel has started to ignite and are expanding this creates an imbalance since the piston cannot move downward before reaching TDC. Even the flywheels cannot smoothen such sudden irregularities. So this causes some sudden vibrations. I'm not an expert in this is just a logical explanation.

@ Thunderstorm

Welcome to the community bro, glad to know that you are safe after the crash. Its trully unbelievable to be able to ride so much even though you are a minor. From what you have a small built,if you were in my place you would have given up riding ( Fine by Mamus). How can you claim insurance if you dont even have license? Man I know its fun, but refrain from driving untill you turn 18.

The speed sensor is placed on the transmission (primary sprocket).

Dust get collected in the brake pads, and this is what causing the sound. So while you do regular washing, apply some water in pressure and rotate the front wheel.

I think Japanese don't believe in marketing.