I have Elevator trim on my KR and recently increased the size of the tab. After reading recent posts I'll make the a couple of comments. 1. Hands on flying is always first choise. However, there are times when I need to have my hands free, such as folding a map. The pitch balance of My KR is such that depending on the load condition (Fuel, baggage, junk) I can be pitch up, down, or level. The trim tab allows me to make small adjustments and maintain level flight. 2. My rudder trim belcrank came loose in flight and the shaking from this unbalanced mini control surface was so vilently that the tab was damaged and would have seperated from the craft if I had taken any longer then 5 minutes to land (I was in the pattern). Any surface that is not 100 percent balanced will flutter and possibly self destruct if left to hang and trail in the wind. 3. Some aircraft with Stabilizers and not elevators use servo tabs to both position the stab and set trim. (Opinion is next) I don't think that a trim tab operated elevator would save you in the elevator cable failed. In addition if the cable called for in the plans fails, it would be from poor manufacture or lack of inspection. The strength of the cable should far exceed any flying condition.
Orma aka AviationMech 19 Years flying the KR-2 Orma L. Robbins Michigan o...@aviation-mechanics.com
