Graham Phantom damping fluid level.


Bob Graham says to use enough fluid to bring the level up to the top of the square profile machined on the bearing cap. The square is only about 1/4" in length. My question is, What level works best for you in relationship to this "square" profile?

I have tried only 3 different levels of fluid in my setup (maximum level to top of square, almost no fluid at all, & to the bottom of the square) but can't seem to obtain optimum results so I'm wondering what others use, although I guess it's really cartridge dependent. Is the fluid level super sensitive? FWIW I'm using a Koetsu RSP.
frank_sm
There is a keyway to align the wand with the main body, however it has too much play, I.M.O. If the tolerance of the keyway fit was tightened up a little, there would be less rotational error. I just purchased a second armwand to use with another cartridge so I'll see if there is any difference in fit with that one.

I'm waiting to hear from Sirspeedy with an update on the ultimate damping fluid level, as well as any other users who have experimented with different levels.
Frank,as to fluid level....As you know I am still in the set-up phase of my own arm.Probably for another two weeks,or so.
My friend has a Phantom/Orpheus combination,like me.I had re-set it up for him,at his request,and am continually playing around with it,as he likes me to set for certain characteristics,of his liking.I know it well!!
The fluid should be on the low side.Near the bottom of the squared off bearing.It will/should vary based on cartridge,but Bob Graham told me(about two months ago),to shoot for the lower settings here.Some go "dry",but I cannot possibly see this with an Orpheus. My 2.2 wound up about half way up,but it was much more sensitive to fluid.It was still a fabulous arm!!!
The Phantom is still very fluid sensitive(not nearly like the 2.2),based upon how crazy(like me)one wants to get.It still MATTERS!!!
Like you had stated about "sibilence" if the pivot to spindle distance is not perfect,the same basic sonic character occurs,when the fluid is not very well adjusted.The only way to do so is to have a standardized set of particular reference discs,which "speak to you" when all is optimal.
That's the main reason I am NOT keeping my current armboard,even though the slightly "off" positioning sounds good.I now realize "it could be better",so I will now break down the set-up("argh"),and start from scratch,with a new board,AND the Wallytractor(it should be on it's way,from dealer).
My Graham jig is useable(based on my previous experience)but it has play in it.More than my friend's jig.I am not about to complain as I feel lucky to have gotten the Phantom,what with the personal problems Bob is currently facing.I wish him the best,and am sure time will aid all.
A year ago I would definitely not be so insistive of this level of adjustment/fine tuning,but a 4300 dollar arm,and a 5,000 dollar cartridge demands it,I guess.Otherwise I'd always be thinking "what if"!!
Hmmm,I need to get an easier hobby.-:)...Tropical fish????
Sirspeedy, thanks for your insight, much appreciated. BTW, maintaining a tropical fish tank is no easier than what you're currently dealing with, believe me, LOL.
Frank,at one time I had a 150 gal,75 gal,50 gal,and two 20 gal "marine" set ups going,all at once!!I truly know the meaning of "pain in the tush" hobby.-:)Even had to hand feed certain species.
BTw,I still like to look at the aquarium mags,but am running out of patience,in my late middle age.Hence,the hope to just spin some damn vinyl,and forget all else.
Best.