Interested in a f4i, or an older 900rr, bunch of modifications to each. Coming from a 250, decent rider.

I want to get a bigger bike, yet I don't want all the power, I'm more nervous of the torque/acceleration. Yet I like the style, and would be able to change the sprockets to achieve the full potential someday.

What if I were to make the front sprocket bigger, rear sprocket smaller. Would I get the same bike, just less powerful? Any issues anyone can foresee? Aside from the speedo being off.

If you were to dyno the stock sprockets, then +X teeth front, -X teeth rear, what percent less hp/torque do you think you'd see?

edit:: this site seems to help http://www.sprocketcalculator.com/

 

You're just saying this. Once you get a bigger bike and ride it more, you wont need reduced power. its a mental thing

 

Changing the sprockets will just raise or lower the roadspeed at which the the engine hits it's powerband. Going too high on the front will make first gear too tall, making it difficult to get started and nearly impossible to creep along in traffic without riding the clutch. (But it will take alot of the "snap" out of first gear.)

I would recommend leaving (or putting it back) the gearing at stock, and just learn to be smoother on the wrist.

Like 2KXJ said, you'll get used to the larger engine very quickly. Just take it easy while you get used to the new bike. Always ride well within your comfort zone, expecially on the streets where other drivers seem to be very proficient at presenting creative teaching scenarios...

 

If you think you're a decent rider on a 250, you shouldn't worry about the power of a bigger bike. The only people who let the bike's power throw them off are novices and idiots. It's all just a matter of smooth clutch and throttle control.

 

25 years old, 5'10" 200lbs. I consider myself a safe rider. Took the MSF course, been riding on and off since 06. Conservative rider, smooth with the clutch and throttle control. Yet I wouldn't consider myself very experienced, I've clocked somewhere over 1k miles. All short distances. Anyway I ride in the suburbs, mostly open roads.

I've just always read so much about not getting such a big bike... it's not forgiving and i.e. one mistake in a turn and you're toast. The thing that scares me the most is having a heavier bike with all that torque. Ideally I would get a late 90s cbr 900rr. Yet it has ~90nm of torque, a 600 f4i has ~60nm of torque and my current ninja 250 has ~24nm of torque. (though I suppose weight is a factor as the 900rr is almost 70 pounds heavier than the 600...)

Perhaps I'm just way over thinking things and an older 900 is fairly comparable to a modern 600... and either way it's all not a big deal.

 

The thing you have to remember is you control the bike not the other way around you can go as fast or as slow as you feel comfortable with if you ride within your abilities you shouldn't have a problem,Just take your time to get used to the feel and power and different weight and don't go crazy...

 

As far as the thing you were saying about the one mistake in a turn. That can happen with the 250. As with any bike you have to get to know the bike and learn it. We ride all the time and the biggest thing we preach is ride within your ability. You know what you are capable of.

 

Thank you for the wise responses! Means a lot.

 

They only have more power if you twist the throttle fast and far enough.