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Is there a problem with setting VTF this way?

I was wondering if anyone else has tried setting their tracking force this way. I have a very accurate laboratory beam balance scale with which I weighed out a blob of blue tack weighing 1.7 grams. I attached this on top of the headshell over the stylus contact point. I then adjusted the VTF until the tonearm was balanced, horizontally level in equilibrium. I removed the blue tack, VTF should be set at 1.7 grams. Is there a problem with this method I haven't thought of?
photon46

Showing 1 response by reubent

reubent
7,078 posts
 
Humm, I've not kept up with my physics, but I don't think 1.7 grams placed on either end of a non-symetric fulcrum will give you 1.7 grams of down force at the stylus. I think a down-force gauge used at the stylus tip is the only quick and accurate means of verifying downforce. Unless, of course, you are a mathemetician or physicist!

The scale on you counterweight is calibrated specifically fot the physical properties of your tonearm, I would guess.

My best guess.......

TIC
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