Between the outer ring 5 and the retaining nut 18 there are a plurality of fly weights 22, the upstream faces 23 of which cooperate with {HEAD ~ the downstream face} 16 of {TAIL ~ the outer ring} 5 
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Between the outer ring 5 and the retaining nut 18 there are a plurality of fly weights 22 , the upstream faces 23 of which cooperate with { HEAD ~ the downstream face } 16 of { TAIL ~ the outer ring } 5
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH