What is a troll? How does effect the dynamics of your bike? Do you go biking with trolls or is this how your system operates? Does feeding your troll make you go faster in a race? I am not sure about your post. Maybe you are on the wrong website. You might want to ask your parents to put you on the right website or just read a good Doctor Seuss book little boy. This website is for men who ride bicycles. We talk about bikes, not trolls...okay little boy. Have a good day.