lil'mizzfishkilla

I will get this out of the way for you. I am an extremely inquisitive idiot with a thirst for knowledge about how things around me work. I am hoping my very BASIC questions don't p!ss you off, but I can't seem to find the answers I am looking for. Torque. Fishing reels. With my VERY limited knowledge, it looks like torque should decrease as the diameter of the reel spool decreases, no? I know there are variables, like drag and line pound test, but practically it seems like the torque increases as the diameter of the spinning spool decreases. A long running fish will peel off a lot of line and every fisherman in the world has been guilty of increasing the drag a tick to save the catch, only to have the line break off. If the torque is decreasing, wouldn't the increase of drag offset it? Or is the torque somehow increasing with the smaller dia. and the increase of drag pushes it over the limit? I know I sound like a total idiot, but to me, it is really important to me to know how these forces work. Oh, and trust me... I have a LOT of these stupid questions. Does anyone have any insight at a very basic level? I know there are mathematics to prove / disprove the increase or decrease of torque, but I can't find it or figure it out. Thank you for your consideration.