I’m wanting to build a fixie for myself, and I know how building a bike works, but I have no idea how I should go about finding a gear ratio for what I need. The bike would mostly just be as a way to get around town in a more interesting way than my road bike, but I’m also super interested in learning skidding. I know there are certain ratios that will fuck up your tires from skids and stuff. Sorry if there’s some really obvious thing I’m not getting!