ahhh, i blur, how come if change rear sprocket to 40 can increase top speed? i understand pick up better, but dont understand bout the top speed..
by the way i just changed my sprockets n chains, ffront n back, standard 15 39.. i dunno y my front sprocket area make like very prominent sandy sound.. anyways, my vibration at higher rpm has become worst than before i change my sprockets n chain.. could it be the workmanship of the mechannic?
dis set me thinking tot i want to decrease the size of my rear sprocket... then i read here change to rear 40 better... wah..
i just want a smooth ride...