Dezie wrote:Thanks for resonding Cafe. I'm afraid we're going to have to agree to differ.
You say the wire in the tonearm moves. But if you look at how tight the original wires are in the space between the arm and mounting plate, I think you could only conclude that no movement was intended. My re-wire is neither more nor less tight or restricted than the original.
And yes, Id be surprised at the compliance difference a ball of cotton wool makes...but you dont say what it is. Compliance is all about mass and I can assure you a ball of cotton wool doesnt materially affect the mass of a 4.5gm tonearm. But the effect of a packed tonearm is incredible...complete silence. I dont know what a pinch at each end does, maybe the same, but if the arm remains hollow in between, Id suggest there's still potential for unwanted noise.
And your last comment doesnt answer my question. Maybe theres a misunderstanding. 5 microns refers to the tolerance to which the bearing was manufactured ie, it is almost perfectly uniform around the entire circumference, not to the bearing clearance. Come to think of it, would a bearing with a clearance of 5 microns move at all? Maybe an engineer could answer that. You can over or untertighten your bearing, and the difference will be felt in stiffness or excess play, but it's really not difficult to get it just right.
Ultimately I like what Ive done to my deck and it sounds amazing, as confirmed by my test record. If you like what youve done to yours, be happy!
Maybe we should just agree to enjoy our modified decks in our own way and let others decide how best to modify theirs. My original post was intended to encourage those who, like me, have no prior experience to have a go. And I hope our debate better informs people who are considering it.
Not 5 micron, but 0.5 micron and I asure you it is the bearing clearance which is why is is not recomended to mess with those screws any why I always recommend when these bearing have any issues just change the arm. The arm wires do actually move a little as the arm gets closer to the spindle they are pulled were the wire goes into the base of the arm, you can even see them pulling. When the arm moves to the rest they slightly bunch up. If you restrict this slight bunching and pulling it MAY cause issues, but if your arm is still able to hover when balanced at the spindle end (worth a check) you might be alright, but if the arm moves back to the rest when balanced the wires are too tight. I would not want to increase the effective mass at all and cotton wool weighs more than you think and depending on its distribution will have more effect than you think, but if your cart is of lower compliance it is not a worry (my main cart is very high compliance). My main worry as i said is the bearing as you could quite honestly have it tightened factors of 10 out and you could not tell. If you are happy it is the main thing, but undooing bearings is not something I would encourage anyone to do when to rewire an arm it is not necessary.