Velocity Stack - 50mm (Airfoil Profile)

thingiverse

This is a custom airfoil shaped Velocity stack for a 50mm carburetor with a pod filter type flange that slips on perfectly. You can choose between versions with or without a built-in screen, but if you decide to print one with a screen, make sure to use a durable Nylon-based material that won't break easily. The velocity stack significantly reduces intake drag by smoothing out incoming airwaves and accelerating them, resulting in increased airflow and improved performance. The airfoil shape on a full velocity stack functions like an airplane wing - high-speed air movement inside the horn creates an area of low pressure outside, drawing air not just from the front but even from underneath the horn, similar to a ducted fan. To install, apply a heat gun on low-medium heat to soften the material around the throat just enough to make it slightly malleable and slide over the carburetor. It's designed to shrink as the plastic cools, fitting snugly around the carburetor.