Unbalanced blades will cause vibration and excessive engine wear.

• A. True
• B. False
• C. T
• D. F

Answer: (C)

Unbalanced blades create uneven centrifugal forces as the engine spins, leading to vibration. That vibration isn’t just a nuisance—it translates into cyclic stresses on the engine and its supporting parts, like bearings, the crankshaft, and engine mounts. Over time, those repetitive forces accelerate wear, cause fatigue, and can shorten engine life. Keeping blades balanced and properly secured minimizes these dynamic loads, resulting in smoother operation and longer engine durability. If blades are damaged or have unequal weight, the imbalance gets worse, especially at higher speeds. So the statement is true: unbalanced blades will cause vibration and excessive engine wear.