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Fuel Servo Finger Filter
On my aircraft I observed a decrease in fuel pressure on two separate occasions while in the cruise at 8500ft. A subsequent data download...


Stainless Steel Control Cables
Some builders that has installed stainless steel control cables reported relatively high wear on the cables after several hundred hours...


Tailwheel Shimmy
History Shimmy is when the tailwheel becomes unstable and oscillates from side to side, or rotates through 360º usually during a landing...


Fuel Selectors
Related topics: Bearhawk fuel system and Fuel Management Rudder and Yaw Sensitivity Uncoordinated Flight Most Bearhawks have a fuel...


MTOW
The original MTOW of the early Bearhawk 4-place aircraft was 2500lbs (1136kgs) in the utility category (4.4 G). The designer allowed...


Oratex Fabric
There's often a discussion among builders regarding which fabric system to use. I used Polyfiber fabric, combined with Stewart Systems...


Uncoordinated Flight
Related topics: Fuel Selectors Yaw Sensitivity Fuel System and Fuel Management Uncoordinated flight will effect all aircraft types,...


Rear Longeron
Several pilots have reported deformed lower aft longerons. It is not uncommon for taildragger aircraft being used off-airport to...


Tail-plane Struts
Several owners have reported broken tailplane struts with a fracture point at the lower threads. It's a good place to cast a vigilant eye...


Pitch Trim Tab Hinges
Several owners have reported excess play in the pitch trim tab hinges. An easy fix suggested by an engineer was to add RTV to the hinge...


Fuel Caps
A number of owners reported losing fuel caps in flight. Early on I discovered a fuel cap missing on my aircraft. While flying with...


W&B Spreadsheet
Downloadable Spreadsheet W&B Download here : This spreadsheet uses Numbers or Excel, and operates on an ipad or iphone. It contains a...


Flow Matching Fuel Injectors
These days many pilots operate their engine "Lean of Peak" (LOP). There is plenty information about this on the internet, but essentially...


Stalls
Overall, the Bearhawk appears to exhibit gentle and predictable stall characteristics. Stall Speed My Bearhawk has a stall speed of 38...


Engine Cooling
Due largely to the Amateur built/Experimental category of the Bearhawk, there is no one standard for engine cooling. Factors affecting...


Aileron Reflex
The designer recommends reflexing the ailerons approximately 3/8" above the trailing edge to help reduce adverse yaw. This works by...


Alaskan Bush Wheels
I swapped the Goodyear 26's for ABW 29's. Initially I installed Goodyear 26" tires. These are good tires - essentially a "poor mans" bush...


Weight and Balance Accuracy
This article discusses a method to level the aircraft accurately, so that the arm distances can be compared to other known measurements for


Performance
This section focuses largely on real world performance of the IO540 powered Bearhawk, but with some reference to the IO360 powered...


Yaw Sensitivity
Related topics: Fuel Selectors Uncoordinated Flight Fuel System and Fuel Management A number of pilots have commented on the Bearhawks...


Takeoff and climb
These notes are no substitute for getting good taildragger instruction from an experienced instructor. There wasn't a lot written...


Pitot Static Position Error
What is it ? Position error normally manifests as the ASI (airspeed indicator) reading a very low speed at high angles of attack. It is...


Engine Selection
Engine selection is probably has the single largest factor affecting the the performance of the Bearhawk. It also has a very large effect...
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