Dynamic Propeller Balancing
Did you know that 90% of all Propeller driven aircraft can significantly benefit from Dynamic Balancing!
Why Should I Balance?
It is recommended by all propeller manufacturers. It reduces maintenance costs: Smoother operation means less component fatigue and longer engine/airframe life. Excess vibration will shorten the life of internal engine components, engine accessories, alternators, avionics equipment, vacuum pumps, exhaust systems, engine baffling, spinners, brackets and more.
Reduce Pilot/Passenger Fatigue: Vibration is a major element that increases wear and tear on airframes, but did you know it also increases pilot and passenger fatigue? Numerous studies have shown that vibration significantly contributes to pilot physical discomfort and fatigue. Excess Vibration can also effect the bodies extremities, if you find your hands or feet falling asleep during flight this is a good indicator of excess airframe vibration. Less vibration means you’ll arrive at your destination feeling better.
What is dynamic propeller balancing?
Dynamic Propeller Balancing is the process whereby an electronic balancer is used to measure the vibration produced by the aircraft power plant. Small trim balance weights are added to the propeller/ring starter gear assembly to correct for errors in mass distribution and to reduce power plant vibration due to mass imbalance to the lowest level practical.
My aircraft runs fine. Why should I have my prop dynamically balanced?
By all means, have your propeller balance checked. The average airplane which has not had a Dynamic Prop Balance has a vibration level due to propeller/crankshaft mass imbalance of about .450 inches per second (IN/S) velocity. This level is more than four times higher than what is considered to be an acceptable vibration level for propellers and represents a significantly higher level of wear and fatigue on engine components and accessories. This average level is usually very noticeable to the pilot and occupants. Yours may be higher or lower than the average but only a mechanic with a vibration analyzer can tell for sure. On the average, 19 out of 20 fixed-wing aircraft can benefit from Dynamic Prop Balancing yet many will never have it done.
My engine and prop were overhauled recently. Should I have my prop dynamically balanced?
Both new and used components need to be dynamically balanced. In fact, the best time to dynamically balance a propeller/engine combination is right after overhaul when components are fresh. In the DSS study, no appreciable difference was found between the vibration levels of recently overhauled and longer time propeller/engine combinations. Even brand-new aircraft with zero time engines and propellers need to be dynamically balanced.
!!!!!!!!!!Please click on this link to watch a Dynamic Balance done by SPS!!!!!!!!