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what is the problem with too much tracking force?

I have a Lyra Delos on a Michell Tecnodec.  The dealer set it up for me.  2 years later, I would like to learn to do this myself.  I bought the MOFI Geo Disc alignment tool, a digital stylus scale, a powerful magnifier, and an ultrasonic stylus cleaner.  I am ready to up my game with my vinyl hobby.  I was on the sidelines too long!

The first thing I did was to weigh the VTF with the scale with my table set up as it has been for a couple of years.  It came in at 1.95g.  The Lyra documentation suggests 1.75, so clearly I am tracking too heavy.  Before I correct this, what is the issue?  Is there something I should look for when I change it to 1.75?

Any advice before I do this adjustment would be much appreciated!
marktomaras
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cleeds
6,059 posts
 
czarivey05-29-2016 10:08am"lyra ranges from 1.75g to 2.25g so yours isn't "overweight" ... The tonearm compliance may also come to equation to ensure proper and stable tracking of cartridge."


Actually, Lyra specifies 1.7 - 1.8 grams so yes, 2.25 grams is a little high for this cartridge.

As for "tonearm compliance" ... pickup arms shouldn't really have any compliance at all, so I don't know how it can "come into the equation."
marktomaras OP
544 posts
 
Cleeds, what is your advice?  1.76 exactly?  What would you expect the issues may be with 1.95 of force as the table is at now versus the proper 1.76?
jmcgrogan2's avatar
jmcgrogan2
6,346 posts
 
Yes, Lyra's recommendation is 1.70 - 1.80 grams. Yes, this is a rather tight range compared to other cartridges.
The tracking range on my Transfiguration Phoenix S is 1.7 - 2.2 grams with a 2.0 grams recommended. 5 times the range of your Lyra.

First, I would not panic, as 1.95 is not so much off that any damage has occurred. Second, as sbank mentions, always check your VTF one last time after making any other adjustments, as changing azimuth, VTA, etc., can all effect the VTF.

Lastly, how many times did you check the VTF, and how much was it changing?
Generally, many scales have a certain "sweet" spot that could change the results a bit. For example, if I have the cartridge sitting right in the sweet spot, generally if weighed three times the weight will barely fluctuate, say +/- 0.01 gram. If you are off the spot a bit, you may get fluctuations of +/- 0.05 grams.

Just go ahead and make the adjustments to set the VTF in the 1.7-1.8 range. Shoot for 1.75, but don't worry if it is 1.73, 1.74, 1.76, etc., as the scales have some error in them as well.
Just enjoy the music.
newbee
4,792 posts
 
FWIW, I don't get too caught up in getting an exact VTF setting.  IMHO, it is more about getting the correct combined setting of VTA and VTF taking into consideration the thickness of the record. I've always considered VTA to be the most important of the two and have often adjusted the VTF to effect a minor change in the VTA. I can more easily hear small changes in VTA than I ever have in VTF. 
elevick
2,638 posts
 
Much too high can cause excess wear, too light and you won't track and will probably skip a lot.  Will you hear a difference between 1.75 and 1.95?  Doubtful, but you never know.  Try it and see.  You won;t hurt anything.
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