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Memory wire
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I didn’t consider it that wise and will certainly establish a serious price comparison. <br />In order to balance your standpoint; hereunder you’ll find what Pro-Rail tells about it. <br />OK, OK, it’s advertisement! [}:)] <br /> <br />The Pro-Rail Wire is specially manufactured for modelling applications. <br /> Its diameter is 125 µm (0,125 mm) ± 4%. <br /> It is made from ternary Nitinol, containing some copper to improve its mechanical properties. It withstands a stress of 185 MPa or, more practically converted, a traction force of 2 N (approx; 200 g). <br /> It has been treated to offer a very stable "2-ways" memory. <br /> This means that its two lengths, respectively at cold and warm state, remain unchanged during its whole lifetime, even after several hundreds thousand cycles. It prevents a progressive untuning of your models as it often occurs with competitive wires. <br /> Another exclusive advantage of the Pro-Rail Wire is that it requires a minimum pull-back force to return to its basic length when relaxing (a spring of a few grams or a rod put slightly out of form are enough). It allows you a much simpler design of your actuators. <br />These advantages are confirmed in the technical bulletins G12/2 (Oct 1997) and G22/1 (Nov 1998) of the MERG (Model Electronic Railway Group). http://www.merg.org.uk/ <br /> <br />Certainly worth evaluation.[tup] [tdn] <br />Anyway, many thanks for your feed-back. <br /> <br />Regards, <br /> <br />Andre <br /> <br /> <br /> <br />
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