To: Eden
It is my contention that the design of the Robinson rotorhead is such that when rigging the helicopter the rotor is offset by 18-degrees from the lateral axis. This is as a result of the pitch horn leading the blade by 72-degrees and not 90-degrees like on a Bell two-blade rotor. Because of this offset it is my contention that the helicopter will fly to the left and not straight-ahead due to a precession of 90-degrees. You mentioned inbred instincts that the pilot would have to change in order to perform the test. These instincts are inbred in a Robbie pilot as he builds time and undergoes lectures from his instructors. In the process of his training the student and eventually the certificated pilot will develop the skills necessary to overcome the impreciseness of the Robinson controls.
It is my contention that the combination of the 18-degree offset and the impreciseness of control input is the root cause of the mast bumping rotor loss / rotor incursion accidents that have happened to the R22 and R44. The test is concieved to maintain a very precise cyclic movement in place of the present wandering of the cyclic in order to get the helicopter to properly respond. If the helicopter flies straight ahead when the test is performed then I am wrong but, If it flies to the left then I am totally vindicated as it will prove two points, The controls are imprecise and the helicopter flies to the left.
I hope this explains the purpose of the test.
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The Cat