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Propeller Engine Balance Master

$146.50/Each
Part# 15-05828
MFR Model# OFF SET PROP

Overview

The installation of this Off-set balancer, the propeller and crankshaft, gives the highest level of vibration reduction.

 


How They Work

Balance Masters® are PATENTED, DESIGNED, MANUFACTURED AND DISTRIBUTED IN THE U.S.A. and are easy-to-install devices for propellers and Rotax engines. These devices cut the vibration factor on ultralight aircrafts by as much as 50 percent when both balancers are installed.

Balance Masters® are weighted with a high density liquid mass (Mercury). The physical principles of centrifugal and gyroscopic forces explain the action of the Balance Masters®. With the Balance Masters installed, the weighted liquid mass (Mercury) in the apparatus shifts during spinning, and adjusts to compensate for imbalances due to such factors as changes in flying conditions or warpage in the propeller, from nicks and rocks during takeoffs and landings. The Propeller Balance Masters® mounts on the propeller shaft or gear box in conjunction with the propeller. It is less than 7 inches in diameter.

The Engine Balance Master is made to fit most Rotax engines and bolts under the Starter Pulley on the Fly Wheel side of the engine. It is less than 5 inches in diameter. Each device weighs about 4 oz. Installation will take about 25-30 minutes using ordinary hand tools for each device.

Balance Master is designed to fit most propeller bolt patterns and Rotax engines from 277FA through 582. We will need to know the manufacturer of your propeller and engine model to determine the right configuration.

Reviews

I bought this item because I know they work. What I didnt count on was shipping from the US to OZ inside a week!

Michael S Verified Purchase

PROP BALANCE MASTER OFF SET

March 3, 2022

Fast delivery from Spruce. I got the 912/914 version, which fit the Rotax bolt pattern perfectly on my Saber prop spacer. Super easy to install, but I needed to get slightly longer prop bolts.

Steven E Verified Purchase

PROP BALANCE MASTER OFF SET

January 12, 2022

Q&A

Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: What are the mounting hole dimensions for the offset prop?

The mounting holes are 5/16".

Q: What is the diameter of the off-set prop balancer 15-05828?

It is 5.074".

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