nykmeister

knn filters do what???? increase the supply of air to the carb right???? but then the fuel will get reduced and the air will increase right????

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nykmeister

throttle means acclerator right????

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nykmeister

how does the cubic capacity affect the power out put of the engine????? i hjave seen the r 125 only 125 cc but can lierally take over the p180 for sure!!! and same with the r15!! can beat the karizma even if its 150 cc

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yash.parekh

how does cubic capacity make a difference in biking experience??

Samarth 619

Yes, to compensate for the increased oxygen flow, we often change the "Main Jet" of the carburettor, to a bigger one.
Main jet is a small cylindrical metal component with a circular hole in the middle for sucking up fuel into carb. I have seen it myself.

Replacing the main jet with a bigger one is also called "rejetting". Browse Xbhp for more details.

Yes. Precisely, Accelerator is on your right hand. Throttle is inside the machine, but these 2 things are linked and are used synonymously often.

Technology is a small influencing factor here, but the major reason for this, is "Tuning":-->

R125/ R15 have been tuned, to make more power at high rpm's. But, it won't be too much at lower rpm's.
Most of our Indian-made machines (P180, Karizma, etc.) have more torque/power at lower rpm's than these bikes.

Google "Torque vs Power" and read many such articles on net about it. Basically, Torque & Power are same things, but with a factor to separate them: RPM/ Engine Speed.
Power = Torque x RPM is the formula.

So, a bike revving upto 16,000 rpm will give lots of power. But, a bike with rev ceiling at around 5000 rpm will be less powerful, but torque would be quickly accessible.

Another example, Karizma gives 17 bhp power @ 7000 rpm. P220 gives 21 bhp @ 8500 rpm.

And so, karizma engine has lots of torque at lower rpm's making it ideal tourer. And P220's ideal for drag races, where it beats the ZMA hands down...

Generally, More Power results in Quick Acceleration & more Top Speed in straight line & high throttle..

So, More Torque-based Tuning helps in pulling weight easily, and giving desired response at low rpms. Ideal for Commuters. Also, Torquey machines are good at mileage too, than high revvers.

An Indian Train engine, say has lots of torque, but it can hardly accelerate, or go beyond 130-140 kmph either, despite a big engine.

"Generally" speaking, More CC would mean more torque, power and lesser mileage (Again "generally", as mileage is a factor of various elements)

I strongly suggest that you SEARCH & read Xbhp's articles and posts for already printed knowledge.
Believe me, almost everything you asked is already posted somewhere or the other place. You'll have to search though.

kinshuk.arya

can anyone please tell me about upjetting..... i have googled it but couldnt find anything useful....

what is upjetting, how is it useful, when it should be done etc....

thanks in advance...

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Samarth 619

A Main jet is a small metal cylinder, that soaks up petrol through a small hole in the middle of it, so that it can be mixed with air and sent to engine cylinder. This happens in carburettor.

Replacing the Main jet with a bigger jet, is called upjetting.

This is usually done to compensate for increased oxygen flow to the engine.

Air and fuel has a particular ratio called AFR, which should remain constant for best results, in our road bikes.
So, if you fit a High Flow Air Filter into your bike, you should fit a bigger main jet to maintain this ratio...

nykmeister

thanks for the info samarth. got the concept of r125 overtaking the zma.

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neon

can we install anti-lag on a bike (pulsar [4 fun]) .. are the kits avail in India ??

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shyamsharma

hi bro thanks a lot 4 d details .

i was supposed to meet u can i have ur no plz