Re: Yamaha YZF-R15 version 2.0

is it just in my head or does the acceleration (even in the asskicking RPM range of 7000-9500) get slightly lower than usual when the fuel is nearing its reserve level, say within 1 litre up from reserve level ? i know (and have felt it many times) that acceleration gets somewhat decreased once fuel hits reserve, but this is the second time in the last 10 months of my bike (first time i observed so was many months ago and thought it was just in my head as one of those random feelings and had forgotten about it) i felt that it seems to get slightly (but noticeable) decreased as fuel is expected to be nearing reserve..

again it might just be in my head or maybe not fuel nearing reserve but some other factor at play (though tire pressure was ideal and no more winds than every other day and chain cleaned and lubed just 250kms ago).

Re: Yamaha YZF-R15 version 2.0

It is surely in your head. The ECU has no such logic to check if the fuel has come down to reserve. If it is happening, apart from your mind, then it must be something else. As you said, that it happened 10 months ago says it all. If it had been the ECU then it would have been the same every time your bike hits reserve. So be assured it's not because of reserve but maybe something else. It never happened to me or to anyone else, whom I know, ride a R15. I had even touched a speedo of 136 kmph once when the bike was in reserve.

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Please check the manual. It has been described very well and you can easily understand the schematics. On how to top it up that also is described well. But please Motul's coolant when you're topping it up as it is recommended by Yamaha.

Re: Yamaha YZF-R15 version 2.0

not talking about speed, i too have done 130+ when fuel was near about reserve (and once when it was in reserve), went to 125 or so a couple of times today itself with fuel probably half a litre above reserve level...i was referring to the acceleration...not any major decrease, just a tiny little bit..slight enough that most people most times wont even sense it (if it indeed happens)...as i said it might be in my head as one of those random meaningless feelings, but it did seem as if there may have been a very slight decrease in that kickass punch in the RPM 7000-9500 pretty much every time i was throttling in that RPM range today...wasn't there till yesterday when the fuel was significantly over the reserve level...

am sure even if it's real it's no issue as it was hardly any decrease at all unless one is too sensitive to it, anyway most likely not even real...

Re: Yamaha YZF-R15 version 2.0

Its in the mind only. Today i did 100+ when the bike was 25kms into reserve and the acceleration was just as crisp.
But when the fuel is about to dry up completely, then we feel the bike loosing power (and i reserve, nothing as such).

BTW, bought Motul 7100 20w50 (for rs 750) for the second fill. Would change tomorrow.

Re: Yamaha YZF-R15 version 2.0

For the guys in Pune, does anybody have any idea about "PRO SERVICE" which has started at yamaha factory shop??

Re: Yamaha YZF-R15 version 2.0

me too, today (and many other times), at several kms into reserve :P

usually though i fill up before reserve hits or just a few single digit number of kms into reserve...

Re: Yamaha YZF-R15 version 2.0

Still I think it's in your mind only.

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Yes. I have done all the servicings till date (except for the first three which I did in B'lore) from them. I have been totally satisfied with the work quality they provide. My bike has been maintained very well and most of the credit goes to them They do charge a bit more than the other ASCs but they undobtedly they do a much better job than the others.

Re: Yamaha YZF-R15 version 2.0

me too pretty much. :-)

Re: Yamaha YZF-R15 version 2.0

There is one more Yamaha authorized svc near to YFS. Near to that underpass towards FC road, which I also thought is YFS service center. Isn't it??

Re: Yamaha YZF-R15 version 2.0




No no. Not at all. Once I also did the same mistake. But YFS is the one adjacent to Hero showroom. So better to service the bike there only.





Yamaha YZF R15 V 2.0

Re: Yamaha YZF-R15 version 2.0

Let us know how the Motul is working..

Re: Yamaha YZF-R15 version 2.0

Its great.
Have already used 7100 for some 3500 kms and the bike runs really smooth and doesn't heat up much as compared to when using Yamalube.
Its my elder bro's bike and he doesn't care much.

Re: Yamaha YZF-R15 version 2.0

Well, lots of discussion going around about R15 and its durability as a bike. Here's my ownership experience at 24k on the bike:

My bike has an ODO reading of 24.5k in 18 months. I have achieved a top speedo reading of 148 kmph while coming back from Bangalore to Pune. Till now my experience about the bike’s performance has been top notch. Personally I feel this is the best bike available in India right now in the 150cc segment. Engine, even after these many kms, still do feel the same as it was when I took the delivery. The throttle response is still the same and the gear shifting is still the same, butter smooth. It's a superbly manufactured and engineered bike with a great, maybe best, engine, considering its capacity and amazing handling. It's truly a 'Fill it, Shut it, Forget it' bike in this category. All it asks for is timely service and you get the performance you want.

Advantages:

1. Superb handling, even in the hilly roads and at high speeds.
2. Superb flickability.
3. Superb engine considering the capacity. One of the best engines of 150cc segment, if someone doesn't agree that it's the best of all for this category.
4. Top notch quality in all the segments like engine build, switch gears etc.
5. Great looks, it may vary person to person.
6. Outstanding stability at high speeds (say above 130 kmph) and at windy sections.
7. Great fuel efficiency considering the class (My bike is still returning a FE of 41-42 kmpl when ridden properly or cruised i.e. at speeds of 80-90 kmph and around 37-38 kmpl when ridden/cruised at 125 kmph).
8. Almost zero maintenance if service is done at correct intervals.
9. Deltabox frame thus adding more fun while cornering.

Disadvantages:

1. Pillion seat, for V2, is not a pillion seat at all. All pillions would be complaining. So follow the R15 mantra 'Arrive Alone!!’
2. Not great headlights. Yamaha should have provided more powerful headlights.
3. Some may find the riding posture a bit painstaking, but then again, once used to it, it's great as it helps you in cornering.
4. Feels a bit under powered above 130 kmph, but that’s also too much to ask for from a 150cc engine.

Till date no modifications have been done to the bike. I have always used Yamalube (Semi Synthetic 15W50). I tried Full Synthetic oil (Shell Advanced Ultra 10W40) once but I didn’t notice huge difference except for the drain interval so changed back to semi synthetic (again here opinions will vary and I would recommend people to use that oil to which they feel their bike is responding well).

Changes of parts (in exchange to stock parts only) or major work done for better/optimum performance done till date:

1. Changed the chain sprocket kit at 15k kms and it is due again at 30k kms.
2. Checked the tappet clearance (should be equal or a little more than 0.2 mm for the engine to perform correctly) at 18k kms and also the timing chain.
3. Changed the coolant completely at 15k kms and will again do so at 30k kms.
4. Changed the swingarm bush as it got rusted.
5. Changed brake pads at every 6 -7k kms.
6. Changed tires at 23k kms (stock tires normally remains at their best till 17-18k kms, after which they become too much puncture prone).
7. Changed the spark plug (to stock only) twice at 10k and 20k kms.

Even now the bike’s performance has been so good that it runs at a stretch of 250-260 kms without any complaints and that also at a cruise speed of above 115 kmph. I have faced no overheating procedure or any drop in any performance even after cruising at 115 kmph for more than 250 kms without any stop. It’s really a marvellous engineering creation from Yamaha and that’s what I really felt when I ripped my bike hard while doing the Pune-Bangalore return trip. Take care of this bike and it will never fail you.

Top speeds at different gears (don't actually rev it hard at 1^st and 2^nd gears):

1. 3^rd gear: 90-92 kmph.
2. 4^th gear: 110-112 kmph.
3. 5^th gear: 134-136 kmph.
4. 6^th gear: 148 kmph.

Some inputs for the new owners:

1. Try to ride the bike with correct tire pressure – direct impact on handling, performance and fuel efficiency.
2. R15 is a rev happy bike which comes alive only after 7k RPM. So once the break-in is done enjoy the throttle. Before 7k RPM also R15 is better than any other city bikes but doesn’t live up to its name.
3. R15 V2 has got a remapped ECU which helps it in producing low-end torque and hence better rideability in city traffic than V1.
4. This bike can easily cruise at 125 kmph, so people who’re looking for a good bike with good speed can seriously think of this bike.
5. Always do the service, especially the oil change, at specified intervals to keep the bike in the best condition.
6. Follow the break-in procedure as mentioned in the manual like bible and the effect you’ll get after 2 years.

Break-in procedure:
During the engine break-in period follow as per the manual:

1. For first 500 kms, try to rev the engine to 4-5k rpm in all the gears.
2. For the next 500 kms i.e. 500-1000 kms in the ODO or till the 1st service, you can go till 6k rpm in all the gears.
3. Riding in the city will be your best bet to follow these instructions. Also, if you want, you can/may try some speed bursts, once or twice, revving the engine till 7-8k rpm, keeping in mind that it is not prolonged.
4. For the next 2000 kms i.e 1000-3000 kms in the ODO and after the 1st service, you can/may restrict your engine till 8k rpm. After the 2nd service, rev your bike as you want as the break-in is almost complete, though it will continue till 4000-5000 kms in the ODO, but very minutely.

Hope this article will help others. And pardon me for this really long article.

Re: Yamaha YZF-R15 version 2.0

Intresting... With a near empty tank my bike always felt marginally quicker and this is due to the difference in weight of petrol present in tank. At full tank (i.e 12lt) weight of fuel is around 8.4Kgs and and at reserve its 1.4 Kg. Thats a difference of roughly 7kgs.

Re: Yamaha YZF-R15 version 2.0

Awesome write up Thanks for sharing your experience.
I'm gonna try Motul 15w50 Semi-Synthetic on Monday/Tuesday. I hope the SVC folks change the oil without complaining. Will also change Oil filter too.

But for service,ill ride down to bangalore , Bangalore Wheels seems to be the place to get your bikes serviced properly. Chain/Sprocket set will also be changed