That makes sense using washers to determine the preload on the bush. Nice tuning aid I reckon.
As for this general engineering comment, it's not quite true.. What is "tight"? I assume you mean a high preload? The preload is directly determined by the the torque and therefore it is relevant. Maybe not so much in this case but in a lap joint it's critical.
Quote:
Originally Posted by jkclifford
if two componants are done up so mating surfaces are tight, the torque is erelovent.
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