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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...
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Stainless Steel Control Cables
Some builders that has installed stainless steel control cables reported relatively high wear on the cables after several hundred hours...
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Tailwheel Shimmy
History Shimmy is when the tailwheel becomes unstable and oscillates from side to side, or rotates through 360ยบ usually during a landing...
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Fuel Selectors
Related topics: Bearhawk fuel system and Fuel Management Rudder and Yaw Sensitivity Uncoordinated Flight Most Bearhawks have a fuel...
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MTOW
The original MTOW of the early Bearhawk 4-place aircraft was 2500lbs (1136kgs) in the utility category (4.4 G). The designer allowed...
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Oratex Fabric
There's often a discussion among builders regarding which fabric system to use. I used Polyfiber fabric, combined with Stewart Systems...
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Uncoordinated Flight
Related topics: Fuel Selectors Yaw Sensitivity Fuel System and Fuel Management Uncoordinated flight will effect all aircraft types,...
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Rear Longeron
Several pilots have reported deformed lower aft longerons. It is not uncommon for taildragger aircraft being used off-airport to...
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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...
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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...
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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...
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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...
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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...
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Stalls
Overall, the Bearhawk appears to exhibit gentle and predictable stall characteristics. Stall Speed My Bearhawk has a stall speed of 38...
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Engine Cooling
Due largely to the Amateur built/Experimental category of the Bearhawk, there is no one standard for engine cooling. Factors affecting...
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Aileron Reflex
The designer recommends reflexing the ailerons approximately 3/8" above the trailing edge to help reduce adverse yaw. This works by...
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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...
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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
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Performance
This section focuses largely on real world performance of the IO540 powered Bearhawk, but with some reference to the IO360 powered...
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Yaw Sensitivity
Related topics: Fuel Selectors Uncoordinated Flight Fuel System and Fuel Management A number of pilots have commented on the Bearhawks...
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Takeoff and climb
These notes are no substitute for getting good taildragger instruction from an experienced instructor. There wasn't a lot written...
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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...
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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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