It’s a fact that a typical ‘bent needs wider and lower gearing than a typical upright bike. Just how much wider and lower is a subjective, sometimes technical, and oft’ debated topic that can make large chunks of time vanish. I’ll try to keep this brief. I use Gear Inches in the following discussion because it is commonly used in trike specifications and it provides a good way to make relative comparisons between drivetrains. Consult a Gear Inch Calculator to see how Gear Inches translate into speed.