Featherweight Flywheel

Featherweight Flywheel is the lightest ring gear support assembly available for Lycoming 320, 340, 360, 540, and 720 engines. Due to our vast experience with Magnesium, a material that is well-known for its exceptional strength to weight ratio, coupled with our use of the latest CADFEA modeling software and in-depth testing, we are able to manufacture a starter ring gear sThe most common Lycoming ring gear supports weigh between 6.5 - 7.0 pounds.
That means our Featherweight Flywheels typically drop more than 3 pounds from the nose of the aircraft.In addition to reducing static weight at typically the most beneficial area to the aircraft, a lightweight flywheel increases the rate of engine acceleration, most importantly when recovering from aerobatic maneuvers and other instances requiring quick application of the throttle. The weight reduction of our flywheel also helps to offset the weight gain associated with upgrading to a constant speed propeller or when adding a starterelectrical system to an aircraft.
While it may seem like a simple item, significant development and testing has gone into creating a very lightweight assembly that can stand up to the high loads created during starting. Additional loads created by high dynamic compression engines and brutal peak loads caused by backfires during starting have been designed for and tested.