Jump Simulator
Free · 2026 · Web
A free gap-jump design calculator for bikes: real physics, real landings, before you move a shovel of dirt.
Anyone who has flown through the air on two wheels knows the moment: staring at a jump and its gap, trying to picture the arc. How fast? Will I clear it? Will the landing feel smooth or like a punch to the spine? The mental math is unreliable, the intuition takes years, and the margins where intuition fails are exactly where the crashes live.
The Jump Simulator replaces the guesswork with projectile physics, air drag, and landing geometry. Set the takeoff angle, lip height, gap, and landing, dial in a speed, and see where and how hard you’ll land. It’s built for BMX, mountain bike, and moto riders designing doubles, step-ups, and the step-downs everyone dreads, and it exists because I jump mountain bikes and wanted to know before digging.
The making of it, in the Stalefish Lab