Fidelity Research FR64s Headshell dilemma

@chakster  : ""  I have FR 64s, FR 64fx, Ikeda IT-345
For all of them PS is 230mm...""   ""  I just use what Ikeda suggested us to use,..""

Ikeda/FR  spec/suggestion is an EL of 245mm, that is their recomendation and because they choosed Stevenson alignment then the P2S is 230.09mm: it's not a sugestion by Ikeda that P2S is only the result of the Stevenson solution for a EL of 245mm.
It was the same for the FR/Ikeda long tonearms 66/407 where the suggested/spec for those tonearms is 307mm of EL and due the choice of Stevenson alignment the P2S is 295mm but this P2S is not a suggestion by the manufacturer. GOT it?

For what you are still posting you still just do not understand the overall alignment subject and what Löfgren wants it and its implications. You are out of focus for say the least.

The discussion in this thread is not to look for a winner but that we all understand the whole subject and in this manner all of us win.

R.

Assertions or opinions? Do people think different? If so with
which organs? We all think in the same way. That is we start
from some  assumption which we think is true and then deduce
in the assertion entailed sentences or propositions or statements.
But the first logical rule is that if assertions are not true than
deduced propositions are also not true. 
However ''being right '' is some kind of psychological reword or
being the winner which prevent us to ''change our mind'' when
we learn or must admit that our assertion are not true. 
So defending assertion at ''any cost'' can be understood in this,
uh, ''sense'''. Chakster is an example but in the sense that
he believes in Ikeda's authority. In the Western ''civilisation''
this confusion between ''veritas'' et ''auctoritas'' was the reason
for Aristoteles domination of Western education for more than
2000 years. Despite the fact that he was refuted in physics by
Galileo and by Frege in logic and scientific methodology. 
In some social 'sciences'' he is still present . Recognizable as
''essentialist''. Those who search for ''essential meanings of
notions''. But notions are linguistic expressions so speaking
about notions is speaking about language. The so called ''reality''
is ''extra linguistic'' . There are unknown many languages but
truth is universal  irrespective in which  language expressed.
But now back to headshells and their assumed ''qualities'' (grin). 

EL = effective length
The effective length is the distance from pivot to stylus.

When we move stylus in the headshell slots back of forth for different null points (Baerwald, Lofgren, Stevenson) we are changing EL (Effective Length). The difference is small, within few mm. Then we turn a cartridge left of right to align by the cantilever. This is it.

This is how anyone can change alignment from Stevenson to Baerwald without changing PS distance (as i said on some turntables it is simply impossible to change PS, like on Technics for example).

Anyway i’m following tonearm manufacturer method first, because in my opinion tonearm designer is the one i can trust. if i have tonearm with Baerwald i use Baerwald. If i have tonearm with Stevenson i use Stevenson (especially with FR + FR7fz series).

On my Luxman PD-444 i have armboards on the rails, i can move them, but not everyone have same armboards to change PS.

No one can change PS (Pivot to Spindle) on this turntables.
Got it ?

I’m really tired of this pointless thread, you can continue without me, thanks

I can’t hear this distortion or any problem at all with many tonearms designed for Stevenson alignment like world class Technics tonearms, Ikeda and many others. At the same time i have tonearms in use aligned and designed with Baerwald method.

My answer to the OP is a nice headshell with slots (not a short headshell with short slots), this is all we need to solve the issue, nothing esle.   

Dear chakster, in addition to ''slots in' or ''on'' headshells there are
also ''movable'' 4 pin connectors which not only allow for the
right azimuth but also  for extra extension for stylus adjustment.
Next to rigidity issue connected with used material those are
important properties of headshells. But also the distance in the
headshell which allows for carts with different dimensions as
well for headshell wire. Your ''short'' headhells are very frustrating
when one need to ''wrestle '' with them in order to get them 
connected with both : cart connectors and headshell connectors .
Add to that different  dimensions of headshell ''clips'' for the
carts as well for the headshells connectors so who would 
understand our hobby except by  masochism assumption?

''Simplicity and reality'', As Raul Kessler& Pisha start with
assumption of 3 ''simple equations'' needed for optimal
geometry. : 1. the determination of zero points, 2. the optimum
of offset angle and 3, optimum for overhang for a given eff.
length.
The reality, ''in the other side'' , as Raul is used to say,  is that
neither of 22  tonearms inspected has optimal construction.
All have sub-optimal results in the context of mentioned ''simple
equations '' .