Ok so I have put my new yerrat[1] through a couple of tankfuls of 20 minute blasts round the Essex Countryside and I know why it is noisy. Mechanical innit. Because it is little more than a high tech plastic moulding the thing is as light as a feather and it achieves this lightness, in part, by being thin in places where thick doesn't particularly matter to meet the safety regs. So it rattles dunnit. This is not going to happen so much with a fibre one as the fibres can easily be arranged during manufacture to damp out mechanical stuff. Weight or no weight it is back to fibre for the next one, one where the sales droid can point out to me the deliberate acoustic damping built into the shell, no arguments. [1] I am getting to grips with the seat belt style chin strap and it is not the issue I thought it might be. The one hand front lifting is a dream come true and with it's natty internal flip down visor I continue to look so in it that maidens have been known to feint as I pass. The excellent ventilation means it still doesn't mist but I wouldn't fancy going more than an hour in it at motorway speeds in winter.