19 tooth countershaft sprocket

[physics-teacher_imp]

First impressions of my 19 tooth sprocket. Messier job installing than I'd hoped; I'll have black grease under my fingernails for a long time. It was dirty in there! Low end acceleration does not seem to be affected at all, though this should be impossible. Main thing I notice: the bike seems more relaxed even in lower gears and vibrate less, if that's possible! In top gear, especially, the bike seems to be loafing effortlessly with NO vibration. Of course, some of this can be the expectancy effect: I see what I expected whether it's real or not. I am guessing the main calming effect may be from the fact that the chain now goes around a larger-radius curve with the 19 compared to the 18. As we all know (?) chains don't like going around sharp radius curves and will wear faster because the load is spread over fewer teeth. At the very least, I should be prolonging chain life, and I think the chain is thanking me for increasing its radius of curvature. In sum, I wholeheartedly recommend this mod.