Oil

i think u must use fully synthetic oils in yoyr bikes if u r tourer..!!


no more comments !!!!!!!

Correction. You should use fully synthetic oil if you plan to rev your bike high in the rev range for a long time.

Touring and oils. No relation.

The difference b/w riding easy & riding over the edge (both you & your bike) is just 5-10kmph. So ride within your comfy levels & limits.
^+1. Thanks niks, this had never crossed my mind

Frankly guys, I didn't get this "peak torque-highest possible mileage" thingy. Bullets have their peak torque at around 2000-3000 rpm. That should translate to around 40 kmph, I guess. But it should give max mileage at a higher speed like 60 or 70 kmph.

A 4-stroke IC engine produces peak torque at the rpm where the intake manifold vaccuum is the highest....in simpler terms 'at the rpm where the piston is sucking the maximum volume of air per stroke'. This is also the point of maximum volumetric efficiency and the fuel burns most efficiently too.

Reason why it happens only at some specific rpm: At lower rpm's the piston is moving slow and so the suction is not assisted by the increased inertia of the in-rushing air.
At higher rpm the piston is moving too fast to give enough time for the maximum possible air to rush in.
So greatest suction happens within a very small rpm range

As for your 'Bullet' part, lets do a small calculation taking the old CI 350 bullet engine and gearbox as the base. Lets calculate, approximately, how fast the Bullet would be travelling at its max. torque rpm.

From the Bullet spec sheet:
Wheel rim Dia: 19 inches = 25 inches with the tyre
Primary Gear ratio: 2.24
Secondary gear ratio (Chain & sprocket): 2.375
Top gear ratio: 1:1
rpm for max torque: 2875

Distance the wheel moves for every rotation: pi x D = 3.141 x 25 = 78.5 inches = 199 cm = 2 mtrs

When the engine is spinning at 2875 rpm, the primary reduction reduces it to 2875/2.24 = 1283 rpm

this is further reduced to 1283/2.375 = 540 rpm by the chain/sprocket combo

So when the engine is spinning at 2875 rpm with the bike in top gear, the rear wheel is spinning at about 540 rpm i.e. 540 rotations per minute

Since we have already calculated that the wheel travels 2 mtrs for every rotation, so it travels 540 x 2 = 1080 mtrs/minute

This equates to 1.08 kms/min = 1.08 x 60 = 64.8 kmph

A true speed of 64 kmph would probably show up as around 70 kmph on the speedo as most speedo's over-read.

So, don't worry, you will be getting max mileage from the Bullet at around 65 kph and that will also the the rpm for MAX TORQUE

Hope the 'peak torque - maximum mileage thingy' is yours for the taking now

^ holy *** , where were you all this time?

Never knew this very good Info, thanks for shairing. So on a ZMA should keep on 6000 rpm , thats around 100kmp ? Thats interesting..

Right behind you

Seriously, chanced upon the objection to your statement today and so thought of putting things in perspective. Hope it does the needful.

Rockkkyyy: theoretically it does translate to about 100kph....but wind drag starts to make its presence felt from about 70kph onwards. So you will not get max mileage at 100 on a ZMA. Somewhere around 80-90 will do the job though.

Thanks for claryfying .

Hmmm... That means my gladi will give me max mileage at around 6500 rpm right... I mean thats where the max torque is... So in that case thats translates to around 70-75... But then why do people say ride below 60 to get max mileage?? Like most mechs i ve come across say don ride your bike above 60 or mileage nahi milega...

ha ha ... yes it definitely does the job , I just know that I had read it somewhere in a magz 10-12 years back ... but they obv didn't give the reasons. Thanks for clarifying !

yeah even i wanna know this , even the company manuals say ride below 60 .
Oldfox any answer to this ?

I think this is for city riding , if you ride at 60+ the frequent acceleration and hard braking will cause the mileage to drop sharply.

However many times i bow to u O Great One will never be enugh.. damn ...

Btw .. wouldnt that mean that for your "One" you will need to go way fast to extract the best of it.. Obviously when you own the ONE, mileage would be the last thing on your mind..

@niks has given the answer. Even otherwise how hard you accelerate to get to the cruising speed also affects the mileage. More throttle rotation, more fuel gets used up. So you might not be crossing the 60kph mark and yet not get good mileage if you accelerate hard to it.


Thank you for that bow!!

Yes, on the One, I would have to travel at speeds not suited to longevity to get the best mileage. Would be around 180kph. No, I don't want to save fuel