How about those straight arms that must have been 2' long on� RCA transcription turntables ? With a pick up that would play vertical and lateral� and a conical� stylus� it would appear that� any tracking misalignment� would be nominal and have little effect on playback response. No one has mentioned these and like long arms......� Astatic� even made a straight arm that was at least 12-14" long. dnw ________________________________ From: Nathan Coy <[log in to unmask]> To: [log in to unmask] Sent: Saturday, December 17, 2011 6:41 PM Subject: Re: [ARSCLIST] Straight Line Tracking was Stanton Turntable reviews....anyone? Oh here we go I guess I'll have to find a copy of the Radiotron designers handbook mentioned here. http://www.kabusa.com/str8_doc.htm sorry all, Nathan On Sat, Dec 17, 2011 at 8:13 PM, Nathan Coy <[log in to unmask]> wrote: > I've been following this with great interest and as a byproduct have > wondered about the differences between carefully compensating by angling > (in respect to radius of disc) a cartridge in the headshell on a straight > tone arm vs. a curved tonearm with same cartridge angle. This is assuming > that both tone arms have the same effective length and are of course > radial/pivoting and not tangential arms. I've been digging through the AES > E-library a bit haven't found any article covering this specifically with a > discussion of comparative distortion at select imperfect angles (although > have now read a lot on anti skate design, tone arm weight, rigidity, etc.). > > I did come across a quite old article that's pretty interesting though and > close to what I'm looking for: > > Carlson, R.E. (1954). Resonance, Tracking, and Distortion: An� Analysis > of Phonograph Pickup Arms. Journal of the Audio Engineering Society. 2(3), > 151-162. > > especially pp. 157-158. > > I've seen statements by companies saying s bent arms are better but I'd > like to see the documentation/detail. > Any direction to sources would be appreciated along with discussion� here. > > Thanks, > Nathan Coy > > > > On Sat, Dec 17, 2011 at 3:18 PM, Graeme Jaye <[log in to unmask]> wrote: > >> On 17/12/2011 Andrew Hamilton wrote; >> >> AH> I think Mr. Jaye meant to say "tangential tracking arms."� However, >> the >> AH> tangential trackers do move along the radius of the disc.� (: Better >> AH> maybe to call the straight and S-shaped arms, pivoting. >> >> Sorry to have confused anyone. >> >> In my original post, I actually referred to "a radial tracking system" >> - which means, of course, a linear tone arm (and tracks along the >> radius of the disc, as you rightly say) - not a radial tone arm. >> >> The main thrust of my comment was that Goran Finnberg had actually >> confused the original question (which concerned the differences >> between straight and curved radial tracking arms) with linear trackers >> and went to great lengths to prove that he was right (which he was) >> although not understanding the question. >> >> Graeme Jaye >> >> [log in to unmask] >> >> Audio Restoration and Location Sound Recording >> http://www.personal-cd.com >> > >