There seems to be a view from some that the swinging tacho needle pre patch may be unrealistic. I have driven quite a few cars from the 50s and 60s with mechanical rev counters. Simply reving the engine produces a smooth sweep of the needle. The internal workings however have more mass than electronic counters. When being driven the road bumps and engine vibration impart forces on this mass creating extraneous movement in the needle. I have never been in a Spitfire with mechanical guages but from my experience with cars I would think the wild swings seen pre patch are more likely in a plane experiencing the enormous stresses and strains in a combat situation than the smooth pedestrian offerings we have now. And being completely subjective - I love them.
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