Feb 12, 2021     Initial Posting       Category: Workshop

Initial Posting

  Sep 15, 2020     Trim System Modification - (60 hours)       Category: Tail Feathers

Modifying the Trim System to go away from the legacy designed servoing trim system to a fixed trim system using a Maule gear reduced Trim Wheel and push pull cables in the elevator(s) to adjust trim tabs. I followed the design on the Bear Hawk Forums (https://bearhawkforums.com/forum/bearhawk-4-place-plans-build/1281-fixed-trim-tab-vs-servoed-trim-tab) and Paul Minelga (aka Alaska Bearheark) and his YouTube Video: https://youtu.be/zJiWSkgq8kI https://youtu.be/rt5af6_G6hY

The only modifications I made to this is using a Dimpled die sheet metal cable retention structure and a set of pulleys for cable routing over the Cathedral in the center of fuselage.

  Aug 13, 2020     Airfoil Modification to Horizontal and Vertical Stab - (80 hours)       Category: Tail Feathers

Added the Airfoil rib extensions to the Horizontal and Vertical Stabilizer. They are made using a 3-D Printed Router Guides that I designed off the Bearhawk drawing for these rib extensions. There are made from end grain Sitka Spruce and Poly Fiber Varnished and Hysol'd to the respective control surface.