An out of balance propeller can lead to harmful vibrations and costly aircraft maintenance. Costly issues that may arise include:

• Excessive load on crankshaft bearings
• Cracking of propeller and spinner bulkheads
• Engine mount wear and deterioration
• Distracting airframe vibration

McFarlane Propeller Balancing Bushing Kits are add-ons for either TOOL108 or TOOL129 tire balancers. These bushing kits make it possible to check the static balance of a propeller quickly and accurately.

• More accurate than knife edge and mandrel methods
• Allows for a quick check after minor repairs
• Durable wooden storage box
• Works with nearly all fixed pitch propellers
• Includes one 2-1/4" diameter bushing for SAE standard crankshaft bores, two cone bushings for the other side of the hub for bores ranging from 2-1/4" to 5-1/8" diameter, and complete instructions*.

PROP GUARD
Use McFarlane's PROP GUARD Anti-Abrasion Boot to protect your metal propeller.

*Instructions cover the use of the tool for checking balance. Propeller manufacturer and FAA guidance must be used when changing the balance of a propeller; some manufacturers require the use of an authorized propeller repair station.