So you go for as short as reasonably possible? WRM > William Monroe wrote: >> Hi Ron(s), >> >> To revive this a bit, I'm curious, Ron N. how you decided upon location >> of >> your replacement for the duplex. Did you just move it to the front of >> the >> webbing area of the plate, or were you trying to achieve a certain length >> of >> "duplex" segment? > > Del wrote a Journal article some years back on his research into what > factors produced noisy front duplexes. It's primarily a combination of > length and bearing angle. I found his information to be dead on in > practice (thanks Del). So I try to make the duplexes as short as I can > practically get them, and somewhere around 15°-20° counter bearing > (enough, but not creating rendering problems). The length is more critical > than the angle. I can usually get down to at most 30mm lengths, which is > nice and quiet at these bearing angles. The SD-10 terminator modification > I posted a while back made the "duplex" length about 10mm, which was also > nice and quiet at a much lower angle. > Ron N > > >
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