To: Grey Area
The graph accompanying my email was for reference only and it indicated the mid point of total travel and the rigged neutral position which is right of the mid point. Not having detailed drawings it is difficult to indicate the exact relationship between the two points.
The chart that was in the NTSB report showed the relative position of the cyclic stick in percentage of displacement to the right. If what you stated is the norm in the UK and the same reference was made in the FAA certification trials then in all cases the cyclic was well to the right of the rigged neutral position with the total percentage varying with forward airspeed.
According to the NTSB chart the percentage of displacement at 30 KCAS was 60.8%. At 90 KCAS the percentage of displacement was 59.3% and at 100 KCAS the percentage of displacement was 69.2%. A second test was run at a different density altitude with slight variations in percentage of displacement at the same air speeds.
It appears that all percentages placed the stick to the right of the rigged neutral position but at this time it is not known how much of the displacement related to compensating for lateral CG displacement and how much was due to compensating for the 18-degree offset.
I am not aware of any Robinson pilot running out of right cyclic even though at times the cyclic was displaced as much as 70.5% of right travel.
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The Cat