How does one determine the correct torque for headshell bolts? If I get one it would be the analogmagik mentioned above.
- 28 posts total
- 28 posts total
Fremer with a cheap torque wrench? As if. No, it was as high-end spendy as everything else in his lair. And read what I wrote again. He didn't trust it. He was TOLD to trust it. And so, dutifully following instructions, he destroyed a very valuable cartridge.
The Linn engineer is talking his own book. That's being polite. Torque values do not come from cartridge makers. Torque values come from engineers. Torque values have nothing to do with sound. Torque settings are derived entirely to be tight enough to not come loose while also not breaking or overly stretching the bolt. At no point does how it sounds enter the picture. There are torque tables for every gauge and diameter and quality of metal. There are no torque tables for cartridge model. The Linnie is full of it.
btw I have the Porsche, and the spendy torque wrench, and being a PCA Instructor have seen plenty of cheap torque wrenches being waved around at the track. They all work just fine.
Accuracy of torque wrenches is relatively unimportant compared to getting consistency of torque when it comes to tightening lug nuts (or wheel bolts if we’re talking German cars). There, a Harbor Freight torque wrench will suffice. On the other hand, if you are assembling an engine, you need a much more accurate torque wrench for nuts on bearing caps on connecting rods, bolts on main bearing caps and head bolts.
Jumping back to thr topic, yes, a high precision torque screwdriver is required to properly tighten the mounting screws of a cartridge to headshell, especially when we’re talking about a $500+ cartridge.
Fremer trusted it enough to use it, whatever his initial impression.
Do you really think that the force holding two mating surfaces together has no impact on their dynamic behaviour? Really? Do you not think that variables such as material (plastic or wood or metal), mating surface, lubrication, and human habits of tool use, might make a difference? And that posted values are for guidance, but that ultimately experimentation is definitive?
As I said, the torque values suggested came from a post by a Linn engineer who had studied the matter in some detail. You declare that he is "full of it". What is your evidence, please?
You also seem to be saying that all tools are equally reliable, accurate, and repeatable. But remember Fremer.