I've flown aircraft of similar vintage, but never seen the needles shake around like that, not even during aerobatics or heavy turbulence. There are restrictors in the inlet lines to all of these pressure driven (bourdon tube) gauges for precisely this purpose - besides which the accumulated fatigue damage to the bourdon tube would soon result in a broken instrument if it weren't present.
W.
Last edited by RAF74_Winger; 04-06-2011 at 12:19 AM.
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