Re: Yamaha YZF-R15 version 2.0

Is tappet noise a common thing on R15 that are ripped once in a while?

I got my bike's tappet noise corrected in second service @1900km. The noise has returned back @2500km after a highway ride. Though the sa suggested that it's common and not to be worried about.

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Re: Yamaha YZF-R15 version 2.0

Hey guys, I have a question, what is the top speed of R15? We were testing it out on an empty long stretch of road (still under construction and hence not open to public traffic). I have tried a few times, but mine doesn't go past 133, even getting to that after 125 takes a lot of time even in full crouch and redlining through all the gears. Also another thing I noticed was that the pull drops considerably once you cross 120.

Re: Yamaha YZF-R15 version 2.0

Here is an added incentive for you to keep the chain well lubricated ... It is conclusively proven fact that a dry chain snaps power. Comparative dyno runs with dry chain vis-a-vis a lubricated chain for bikes like R1 and ZX10 show a drop of power by as much as 5 to 6 bhp. For a bike like R15 which makes about 14 bhp at the rear wheel it matters even more as even 0.5 bhp drop becomes very pronounced. Also the snapping of power leads to reduced fuel efficiency.

Re: Yamaha YZF-R15 version 2.0

yeah, in theory i knew that and as a real life instance, i had observed (after that time in rainy september which i mentioned about when i lubed the chain after about 1000kms by which time it was very dry) a very significant improvement in throttle response after lubing it (wrote about it here too i think). knew that should happen in theory too but that was still a nice observation and feeling.

however, it's interesting to know the very power delivered to the rear can get reduced by as much as 5-6 bhps on big SBKs..that's a number that can make a lagging difference in certain situations..

btw, isn't it 17.5 horses at the rear wheel ?

in any case, since then i have been regular in lubing it (about every 500-600 kms). but i suspect the rusting must have started during that time, chain was dry and it was a season of moisture.

Re: Yamaha YZF-R15 version 2.0

Its 17 PS (i.e. 16.8 bhp) at the crank. When the transmission losses are taken into account a dyno run will show somewhere around 14 to 14.5 bhp at the rear wheel.

Re: Yamaha YZF-R15 version 2.0

so much losses (15-20%) at the transmission is the norm in all kinds of bikes ?

Re: Yamaha YZF-R15 version 2.0

Depends quite a lot on the models and makes of the bike. Traditionally Yamaha has about 15 to 20% losses, whereas Honda has about 10 to 12% losses. This is in a way due the production tolerances. A large factor is how contentious a company is about the tolerances within which it would operate a production line. The tighter the tolerances are maintained to the optimal design values the lesser will be the amount of transmission losses. However, thats not to say that you can eliminate transmission losses completely.

Also transmission losses is not just due to diviation in tolerances, issues such as friction between moving parts, windage of the crankshaft, connecting rod flexing, clutch slippage, etc, all play their role in robbing the ultimate amount of power available at the rear wheel.

Re: Yamaha YZF-R15 version 2.0

Bumping my post

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Re: Yamaha YZF-R15 version 2.0

well this is a bit upsetting.

Re: Yamaha YZF-R15 version 2.0

Depends actually. Imran Khan here, has his bike svc'd from YFS only. On the other hand I did not have a good experience with YFS. The one on tilak road is Monarch Yamaha. Good SVC. IF you want you can wait inthe customer lounge and watch you bike getting undressed and then suit up for a ride back home :P
Try Suvarnerekha SVC if you can. Its near City prode Kothrud. Branch of the Monarch Yamaha. Its a small SVC but gets the job done quick. I usually get my bike serviced from there and I prefer to sit with the mech, while he does his job. That wasy I can tell the meh if I want something to be done . some tad bits here and there or say levers adjusting and stuff.
Would recommend go to Monarch Yamaha first then try suvarnarekha SVC.

The stock rubber for the r15 is tough to get hands on. Theres a tyre shop on JM road in pune. in the lane bang opposite to Jangli Maharaj mandir. Pungalia tyres. Ask him . Lesser known tyre shop but good service. Has most of stock tyres handy. else contact the MRF guys. there is a MRF exclusive store in kothrud paud road near MIT college/Durga cafe. And another one at HP petrol pump in Bavdhan. Check those too.

Re: Yamaha YZF-R15 version 2.0

Thanks bro, but both these SVC's are too far for me. I live in the PCMC area in New Sangvi to be precise.

Re: Yamaha YZF-R15 version 2.0

Monarch Yamaha works only on prior appointmetns. Call them and schedule one. reach max by 8:30. be in the first 5. Tell them you stay far and will wait here. get your bike back serviced by 11:30 or 12 max. PS : they'll start svcing around 9:30 -10 o clock. About time and distance. Its just for 3-4 hours at max. and that too once in 2 odd months. Should not be a problem considering the caters to your requirement day and night I can vouch for good service by these two. there's one more SVC near boat club road. JJ Williams. not sure about the service there. But they have ample spare parts

Re: Yamaha YZF-R15 version 2.0

Guys, does anyone know the approx price of Air-Filter ?

Re: Yamaha YZF-R15 version 2.0

-----Rs-130

Re: Yamaha YZF-R15 version 2.0

So now the white color on the belly fairing, near engine (left side) has almost vanished. I know many facing same issue. On another note some bugger took out the handle bar weight of RHS. :/ although it might be a couple of hundred bucks at max. look chala gaya bike ka. How ever spankingly clean and polished I keep the bike. The first thing I notice is the handle bar end weight.
The bike is performing exceptionally. Although I never expect any specific performance but comapring it with peers its pretty darn good to say.