Announcement

**whizzkid_ram** · 08-25-2009, 05:06 PM

Originally posted by Sarvajit View Post

Considering the silencer is changed for India, a more relevant question would be: How does the Indian Ninja sound!

It may sound like this...watch the video

Ninja 250 R

**Sarvajit** · 08-25-2009, 05:39 PM

Originally posted by amandeepkamboj19 View Post

i have already posted a link on octane number we can have discussion on octane rating there

http://www.xbhp.com/talkies/universa...ct-engine.html

Thanks. I have posted a chart in the Fuels section about which octane no.for what engine compression ratio as well.
Going by that, the baby Ninja should do fine on any of our Indian petrol (87.5 octane). It will be better on ExtraPremium/Power petrol which is 91 octane.

**amandeepkamboj19** · 08-25-2009, 05:50 PM

Originally posted by Sarvajit View Post

Thanks. I have posted a chart in the Fuels section about which octane no.for what engine compression ratio as well.
Going by that, the baby Ninja should do fine on any of our Indian petrol (87.5 octane). It will be better on ExtraPremium/Power petrol which is 91 octane.

octane is a chemical compound
CH3(CH2)6CH3
C-carbon
H- hydrogen

higher the octane value in fuel higher is the amount of hydrogen and higher is the combustion rate as hydrogen is most combustible element on earth

so for high rpm engines we want fuel to ignite at fast rate.
thats why high octane fuels are recommended.

other wise performance will not be up to the mark.

**rachitkohli** · 08-25-2009, 05:52 PM

^^ no chemistry... SOS..!!

**julianpaul** · 08-25-2009, 09:41 PM

35 pages in 5 days and no really useful info. more of the same old speculating. xbhp has become a real drag these days. every thread shares more or less the same fate.

**sam92** · 08-25-2009, 10:16 PM

Originally posted by julianpaul View Post

35 pages in 5 days and no really useful info. more of the same old speculating. xbhp has become a real drag these days. every thread shares more or less the same fate.

^ +1
one more guy ''speculated'' it will launch in oct end

**abhijeet080808** · 08-25-2009, 10:40 PM

Originally posted by amandeepkamboj19 View Post

octane is a chemical compound
CH3(CH2)6CH3
C-carbon
H- hydrogen

higher the octane value in fuel higher is the amount of hydrogen and higher is the combustion rate as hydrogen is most combustible element on earth

so for high rpm engines we want fuel to ignite at fast rate.
thats why high octane fuels are recommended.

other wise performance will not be up to the mark.

Not exactly. We need higher octane fuel to prevent detonation in the engine. A detonation is like an explosion where sudden increase in pressure and temperature takes place. In case of normal combustion, pressure and temperature rises in a smooth curve. But, if we increase the compression ratio above certain point, the combustible charge being under greater pressure tends to explode. There are 2 ways to combat this. Firstly we can modify the fuel such that it burns slowly and does not tend to explode (increase the octane number). Secondly, we design squish bands in the cylinder head that can reduce this tendency using the same low octane fuel. A modern engine uses a mixture of both. So, it is not that all 8:1 (say) CR engines will need a certain fixed minimum octane number fuel to run. The engine with better designed head will be able to run on lower octane number too.

And no, the octane number does not solely depend on the amount of octane present. A lot of other chemicals can be used to vary the octane number of petrol. For eg - Tetra-ethyl Lead was used in India till the '90s to increase the octane number.

**koolbhas87** · 08-25-2009, 11:11 PM

Has the Ninja 250 arrived in India...???

**moeed** · 08-25-2009, 11:45 PM

I'm just waiting to see the Ninja on the roads.

**vipin_s** · 08-26-2009, 12:02 AM

Originally posted by julianpaul View Post

35 pages in 5 days and no really useful info. more of the same old speculating. xbhp has become a real drag these days. every thread shares more or less the same fate.

+1 , but I won't blame xbhp, but bajaj for taking the green machine into Pune's PBK at prime location @ prime time, anxious onlookers were allowed to take one or two pics but were 'chased away' when they clicked 3rd picture !!

(they could have covered the bike if they didn't want pics to fly around like mad ?)

Had they done the excercise(feeling how the machine would look in showroom

) in late night/early morning, we would have not been dragged into so much of needless discussions.

**theslayer** · 08-26-2009, 01:22 AM

Originally posted by vipin_s View Post

+1 , but I won't blame xbhp, but bajaj for taking the green machine into Pune's PBK at prime location @ prime time, anxious onlookers were allowed to take one or two pics but were 'chased away' when they clicked 3rd picture !!

(they could have covered the bike if they didn't want pics to fly around like mad ?)

Had they done the excercise(feeling how the machine would look in showroom

) in late night/early morning, we would have not been dragged into so much of needless discussions.

This guy is still allowed to post here? Whoa.

Sir, you are welcome to stay away from any further discussions pertaining to the Ninja 250. Bajaj sincerely has no intention to waste your time, your ISPs bandwidth and the rent you pay for your cubicle.

**amandeepkamboj19** · 08-26-2009, 10:55 AM

Originally posted by abhijeet080808 View Post

Not exactly. We need higher octane fuel to prevent detonation in the engine. A detonation is like an explosion where sudden increase in pressure and temperature takes place. In case of normal combustion, pressure and temperature rises in a smooth curve. But, if we increase the compression ratio above certain point, the combustible charge being under greater pressure tends to explode. There are 2 ways to combat this. Firstly we can modify the fuel such that it burns slowly and does not tend to explode (increase the octane number). Secondly, we design squish bands in the cylinder head that can reduce this tendency using the same low octane fuel. A modern engine uses a mixture of both. So, it is not that all 8:1 (say) CR engines will need a certain fixed minimum octane number fuel to run. The engine with better designed head will be able to run on lower octane number too.

And no, the octane number does not solely depend on the amount of octane present. A lot of other chemicals can be used to vary the octane number of petrol. For eg - Tetra-ethyl Lead was used in India till the '90s to increase the octane number.

Octane number and its effect on engine - xBhp.com : The Global Indian Biking Community

http://www.xbhp.com/talkies/universal-threads/9202-octane-number-its-effect-engine.html

The gold mine of all the topics which are frequently discussed..

you should check this link i have already posted a lot on engine knocking

BTW no matter what fuel ninja runs on what speedometer it have what price it have-- serious buyer will definitely go for it

**dushyant** · 08-26-2009, 11:41 AM

what news of the ninja???? anybody know the exact launch date or any other date?

**abhijeet080808** · 08-26-2009, 07:21 PM

Originally posted by amandeepkamboj19 View Post

http://www.xbhp.com/talkies/universa...ct-engine.html

you should check this link i have already posted a lot on engine knocking

BTW no matter what fuel ninja runs on what speedometer it have what price it have-- serious buyer will definitely go for it

That article from Wiki is correct, but what you have posted on this thread was not. Hence my correction!

**NitinGirish** · 08-26-2009, 08:01 PM

Originally posted by Puneet1 View Post

Do you know the price of the Indian R1

,its 11 lakhs + . so Ninja at 3 is Fair .

How? How is it fair?

Originally posted by niks_devil666 View Post

a 9000GBP R1 costs 12 lakhs , 4000GBP 250 R costs 3 L , what part of this doesn't make sense?

Its as simple as "If you have the money , go and buy it" else dont criticise about the handlebars and speedo and make them as excuses for not buying one. Its the same which is sold abroad , no changes to the bike.

Good stuff doesn't come cheap.

When a s/w engineer goes from India to US he gets atleast $5000/month. But he will be paid a tenth of that in India. Does it mean he is no more a 'good stuff' when he comes back? There is more to comparison than using market currency exchange rates. Probably your good self forgot about it in the excitement.

For me, the news has been disappointing even before it could excite me. Rs.3L

Like somebody said, the next thing available is 10L+ So seriously moneyed people will go for it. For people like me this turned out to be a non-event

Announcement

Baby Ninja -- On stands now!!

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