Re: Yamaha YZF-R15

^
I will take the necessary precautions... thanks again..

Re: Yamaha YZF-R15

Changed oil to Motul S5100 and spark plug to NGK Iridium (NGK CR8EIX).
Also cleaned air filter, tightened chain along with cleaning and lubing.
The engine feels a lot more smoother and the gear shifting is like just pressing an electrical switch. (May be due to Motul S5100).
The rpm rise from 6K to 8K feels to be quicker. ( May be due to NGK Iridium or even the engine oil .. not sure)
My ride is a lot more peppier now and It makes me to fall in love more and more :-)

Re: Yamaha YZF-R15

My R15 v2 is less than one year old. Recently I have noticed that there is a kind of whining/humming sound (like something rotating in air) from the front end while riding, more while slowing down without breaking. Is it supposed to be a normal sound, or should I be concerned about it, as wondering what should cause this.

Re: Yamaha YZF-R15

Get your front brake pads checked.. Thats because of friction between the pad and the disc *i guess*... go for a short ride and don't use the front brakes at all.. Use the rear brakes instead... At the end of the ride, touch the contact patch of the front disk and see if its heated up.. If yes, then time to go to the SVC... Keep the ride short to prevent over-heating... *be cautious though! I don't wanna be responsible for a burn :P *
The SVC guys will solve it for you..
krish2778 might be able to give you a confirmed answer...

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Bro... I tried that method and braking seems to have improved considerably.. I am sure that it will be as good as before in a short time... Not overdoing it because i have a mixture of DOT3 and DOT4 *damn mechanic*... I noticed a loud clicking sound when the rear tyre is locked... Is this normal? I hadn't noticed it before and it might be due to my ignorance but still its better to get my doubts cleared rather than hoping its nothing wrong...

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Which grade of engine oil are you using? i too am in the search for a better replacement.. And i don't think there will be a significant increase in acceleration due to a change in Spark Plug unless your old one has lost its sharp edges... then too, the improvement is very minimal but there is always that mental satisfaction!

Re: Yamaha YZF-R15

Abhimanyu, I got a question about the rear shock. I serviced the front shocks about a month ago for the same reason you mentioned above. However, been feeling that the rear is getting harsher due to which the bike seems to be loosing its rear in corners as shock is not responding adequately to the undulations on our beautiful roads. Spoke to the ASC guys and they said that nothing can be done to improve/service the rear shock and replacement was the only way to go. Is that true?

Re: Yamaha YZF-R15

Ahh... someone finally brings up the rear shock absorber ... How much has your bike run?

Before looking at the shock absorber, the first thing that you should look at is the condition of the linkages and needle bearings that are used as so called 'bushes'. It has been my experience that ASC guys do not do a through job when inspecting and re-greasing the linkages and the needle bearing. What they normally do is that they remove the pivot shaft that holds the swing arm to the chassis, remove the linkage, check the condition of the pivot shaft, and the needle bearings in the swing arm, replace or grease it as required. What they are not doing is removing the shock absorber from the chassis and cleaning and greasing all the mounts, bolts and linkages. So its basically a job half done. So my advice is first of all ensure that the job of inspection, replacement/ greasing of the rear suspension assembly is done as per specs laid out in the service manual.

Now coming to your specific inquiry regarding rear shock absorber. Had we been living in UK or U.S. I would have advised you to send the shock absorber to a suspension specialist like K-Tech or Race Tech. It is indeed strange that while most bike companies talk about replacing the front fork oil every 2 years and/or 40,000 kms (a general yard stick), none of them mentions anything about the rare shock absorber which principally works on the same concept and internals. A few years back, I had met a suspension engineer from Gabriel. According to him a shock absorber needs to be reconditioned or replace every 50,000 to 60,000 kms (we were talking about cars). Like every moving part the internals of a shock absorber goes through wear and tear. The oil over time coagulates and its viscosity changes, thereby changing the dampening characteristics of the shock absorber. As the bike companies have not provided for servicing of the rear shock absorber, you really have no choice but to replace it with a new one. I personally think that the shock absorber on the R15 should be changed around 50,000 to 60,000 mark in order to maintain a good suspension.

Re: Yamaha YZF-R15

I have done half the number of Kms you mentioned for a change of the rear shock. My bikes done 25000 kms. I guess I'll go with the proper service of the shock, which I do not think has been done even once. The 'half done job' is what they have done twice till date (I'll write that down to my ignorance).

Hoping there's a difference after the service. A question though, as the internals are fairly similiar, why can't the oil in the rear shock be changed, the same way we do so for the front ones?

Re: Yamaha YZF-R15

The reason is that its a sealed assembly and requires tools and jigs to the dis-assembly and assembly.

Re: Yamaha YZF-R15

HI,
I want r15 v1 rear tyre to use on my rtr180..
Not available in many shops..can I get it from yamaha showroom?
Any idea about current price?
Also anything else better if I can't get zapper y?

Re: Yamaha YZF-R15

I got mine for some Rs.18XX from YAMAHA showroom a month back. they retail it in here (Pune).
Is it a direct fit ? Anyone tried it on RTR before?

Re: Yamaha YZF-R15

Thanks for the reply.I got one:

Re: Yamaha YZF-R15

Feeling some harsh vibs at handlebar and footpegs alone.
No vibrations at tank.
Also the bike doesnt handle well after the chain tightening.
Friends, Any guesses for the problem ?

Re: Yamaha YZF-R15

Anyone got their front disc plates changed here? If yes, at what interval & was it due to normal wear & tear?
My bike's front disc plate (stock) seems to have been eaten up by the disc pads at 35k kms. Improper installation maybe.


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Re: Yamaha YZF-R15

Are you talking about the serrations made on the disc? Even i have them. It's due to the metal (mostly copper/ bronze) compound added to the pads.

However, they do not effect the breaking performance. Only if the surface is warped due to extreme heat and heavy metal to metal contact, you will need to change the disc.



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Re: Yamaha YZF-R15

The serrations are there, but it's more like the disc has become thinner. The disc is no longer smooth, & has got grooves.


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