Quick Reference
Choosing and Balancing FPV Props
Symptoms / When to use this
vibration in footagejello effecthigh amp draw
Props are the most replaced part on any FPV build. Choosing the right pitch, blade count, and material — then balancing them correctly — has a direct effect on efficiency, noise, and video smoothness.
Why Props Matter
Propellers convert motor thrust into airflow. An unbalanced or mismatched prop introduces vibration that shows up as jello in footage and shortens motor bearing life.
Pitch, Diameter, and Blade Count
- Diameter (e.g. 5", 3.5") — larger diameter = more thrust but more inertia, harder to flip quickly.
- Pitch — how far the prop would travel in one revolution if there were no slip. Higher pitch = more speed, more amp draw.
- Blade count — tri-blades are the most popular 5" compromise between efficiency and punch; bi-blades are more efficient at low speed.
Balancing Props
Use a magnetic prop balancer. Sand the heavier blade on its flat face with 400-grit sandpaper in small increments. Re-check until the prop rests level at any position.
When to Replace
Replace props after any hard crash, if you see chips on the leading edge, or if the prop no longer sits flat on a flat surface.
#props#balancing#vibration#5-inch#tri-blade