Yes. Power drops above 8500rpm. Longer gearing in the final drive won't decrease realisable torque on the wheel because you can compensate in the CVT.Valiant wrote: Is that how it works? I always figured that if you had trouble getting up to the red line in the first place, then making the gearing longer wouldn't help with that. I wasn't sure if power would actually drop if you went above the peak power range of 8500 rpms.
Like if I'm running at 69 mph at 8900 rpms on a flat road because my PCX can't push past wind resistance, wouldn't the PCX run slower if I extended the gearing? If your torque remains unchanged, then it wouldn't make sense for the speed to go up unless you have more torque at 8500 rpms than you do at 8900 rpms.
Just wondering since I was debating whether or not to have the KN Planning torque driver installed when I put in the 31mm throttle body and manifold and finally balance out the rich AFR from my BBK install. I expect to get a bump up in power, in addition to putting in 8g rollers to increase the pulling rpm, so I figured I could afford to take the hit on that.
I am a minimalist when it comes to mods... I only installed sliders and the gear set. Didn't see the need for changing the torque driver.
If you are modifying your engine, keep in mind that a more powerful engine requires heavier sliders/rollers to counter the increased torque on the torque driver.
Also, obviously, changing the power curve of the engine should influence your gearing requirements. There is a longer gearing option than the 45/15.