10 p`nnth ,which could also be rubbish.. If you are measuring roll-rate in level flight there may be a slight difference due to the rigging of the head/stick to offset translational effects/sideslip,and any gearbox offset/tilt to give a levellish fuselage attitude.If it`s only noticeable during transients,like d/w quickstops,then I think it is a flap-back/roll interaction,with t/rotor interaction from the "attitude" in relation to the rotor and fuselage c of g--ie the a/c wants to change ends ,but quicker than you thought.I`ve seenGreenham Common runway thru` the roof panels of a Sea-king with CO`s and training officers as Display Pilots and thought-I hope the big arrow "L" knows which way it is pointing!! I also saw a new young Sqn.Ldr practicing a d/w q/stop at Ternhill,unfortunately,he didn`t get all the mighty Sycamore`s 550 hp under his armpit ,and ended up running on at about 50 kts and spreading t/r bits all over the airfield,and he didn`t get ground-resonance.We lesser mortals on the course we nt and had another coffee,and contemplated our future.!!! Very observant of you anyway Crab,you should apply for ETPS,and you`ll probably be asked at the interviews"what about roll-rate------??Keep your balls in the middle,I say..
