Dear Chris, I'm on vacations and I can only use my mobile to respond.
So :
I agree with what Dover said.
We have to accept this fact but we must also note and realize that :
For an overhang of 17mm at the full side of an LP (22min=1320sec=733rotations) the displacement per rotation is 0.0232mm.
This particular kind of progressive speed break that takes place, it is just impossible to perceived by our senses as speed variation or pitch instability, but of course we can clearly witness a unique phenomenon of a flowing without friction that results only from the allways perfect tangential TRACE and this is the part of interest, not the effect of the perfect SPEED.
Now, to be able to take any advantage of this quality, one has to take care a number of concerns that perhaps this thread brings over, (I'm sorry it is impossible to read the whole thread on my ancient mobile phone) but one of the most curious that I've witness is the cartridge great VTF, great actual physical weight and relatively low catilever's compliance. I don't know if your experiments with MM carts brings forth any issues reg. all of the above, but my own living with Piere Lurnee SL5 & Goldmund T4 with MC's was reflecting this preference. I know these were 2 bad examples of Tangential arms but this is my limited experience and this is also the reason that I abandoned the Parallel tracking chapter. I've allways had lusting over an Air Tangent but the cost of purchase was 13000 euro five years back and lefts me wanting. I'm sorry but I can't be of any help here and somehow I feel that I'm embarrassing your findings with my own contradictions. It is just a different path that I take here, (as with my speakers, my DHT line pre & SET/OTL power amps) and although not clearly a preferance for pivoted over tangential, my favorite cartridges direct me this path .
About the alignment post on Pivoted arms:
http://forum.audiogon.com/cgi-bin/fr.pl?eanlg&1343550512&openfrom&21&4#21
Take care
So :
I agree with what Dover said.
We have to accept this fact but we must also note and realize that :
For an overhang of 17mm at the full side of an LP (22min=1320sec=733rotations) the displacement per rotation is 0.0232mm.
This particular kind of progressive speed break that takes place, it is just impossible to perceived by our senses as speed variation or pitch instability, but of course we can clearly witness a unique phenomenon of a flowing without friction that results only from the allways perfect tangential TRACE and this is the part of interest, not the effect of the perfect SPEED.
Now, to be able to take any advantage of this quality, one has to take care a number of concerns that perhaps this thread brings over, (I'm sorry it is impossible to read the whole thread on my ancient mobile phone) but one of the most curious that I've witness is the cartridge great VTF, great actual physical weight and relatively low catilever's compliance. I don't know if your experiments with MM carts brings forth any issues reg. all of the above, but my own living with Piere Lurnee SL5 & Goldmund T4 with MC's was reflecting this preference. I know these were 2 bad examples of Tangential arms but this is my limited experience and this is also the reason that I abandoned the Parallel tracking chapter. I've allways had lusting over an Air Tangent but the cost of purchase was 13000 euro five years back and lefts me wanting. I'm sorry but I can't be of any help here and somehow I feel that I'm embarrassing your findings with my own contradictions. It is just a different path that I take here, (as with my speakers, my DHT line pre & SET/OTL power amps) and although not clearly a preferance for pivoted over tangential, my favorite cartridges direct me this path .
About the alignment post on Pivoted arms:
http://forum.audiogon.com/cgi-bin/fr.pl?eanlg&1343550512&openfrom&21&4#21
Take care