OMG, I was laughing so hard making this.
What you need:
+ Any piece of wood, mine is 5.5x4.5in 1/2in thick.
+ A piece of bendable metal, mine is 12inx1.4in.
+ An L bracket.
+ A straw, one of those bendable kind.
+ A kitchen utensil to measure milliliters.
+ A toothpick
+ some tape
The trick to it is that water weighs 1g per milliliter.
Drill a hole, put a screw and nut.
Cut the toothpick, bend it on the 2 ends, tape it to the straw (cut symmetrical where it bends) and balance it on the metal.
Now pour 2.2 ml of water in it (what I needed exactly for my cartridge), or whatever you want. Mark where it balances, score it with a sharp knife for the stylus to rest on it.
What you need:
+ Any piece of wood, mine is 5.5x4.5in 1/2in thick.
+ A piece of bendable metal, mine is 12inx1.4in.
+ An L bracket.
+ A straw, one of those bendable kind.
+ A kitchen utensil to measure milliliters.
+ A toothpick
+ some tape
The trick to it is that water weighs 1g per milliliter.
Drill a hole, put a screw and nut.
Cut the toothpick, bend it on the 2 ends, tape it to the straw (cut symmetrical where it bends) and balance it on the metal.
Now pour 2.2 ml of water in it (what I needed exactly for my cartridge), or whatever you want. Mark where it balances, score it with a sharp knife for the stylus to rest on it.
Attachments
One obvious and important point: make sure the metal is non-magnetic. Ie. copper, zinc, anything but iron!!!!
Actually it doesn't matter if it's magnetic, as compressing the stylus does not change the Earth's gravitational pull on the cartridge. However, since aluminum is so inexpensive, easily worked, and easily come by, you can use something non-magnetic if it makes you happy.
Grey
Grey
You're right about measuring the force, but if it were magnetic as you brought the cartridge close, the metal would jump to the cartridge and crush the cantilever!!!
You know, I once knew a young lady who used to complain about my hands in approximately the same terms.
Until I managed to persuade her that my hands knew better what they were doing than she did.
After which we got along just fine.
You just need a more robust cartridge.
Or perhaps you need to brush up on your skills of persuasion.
Grey
Until I managed to persuade her that my hands knew better what they were doing than she did.
After which we got along just fine.
You just need a more robust cartridge.
Or perhaps you need to brush up on your skills of persuasion.
Grey
Jamh I agree, NON-metallic. If the cart tries to attach itself to any part of the balance beam it just adds difficulty to a simple task.
I could ask if you adjusted the weight of the water per the elevation of your location. The weight of water (specific gravity) is measured at sea level. But that would be silly, like talking about hands or whatever.
Nicely done project.
I could ask if you adjusted the weight of the water per the elevation of your location. The weight of water (specific gravity) is measured at sea level. But that would be silly, like talking about hands or whatever.
Nicely done project.
Nice work there.
Remember to keey the straw+toothpick on the slider, in the same place, but with no water in it, when measuring the force- this will affect the reading otherwise.
Richie00boy-
Yes- for measuring the tracking force.
Remember to keey the straw+toothpick on the slider, in the same place, but with no water in it, when measuring the force- this will affect the reading otherwise.
Richie00boy-
Yes- for measuring the tracking force.
jrevillug said:
You can be as precise as you want to be. I didn't get into the details of calibration. For example I made 2 of the straw things, and placed them the same distance apart, and filled only one with water.
Or you can use a postal scale, and weigh various objects until you find something that is the right weight, then balance it on the gauge and mark its spot.
Have fun!
Jamh said:
Printer paper always has it's weight given, eg 90gm/m², so with good quality stuff one can easily and quickly make very accurate weights in the 1 ro 3 gram range.
A.
Contact
JamH, I'm interested in buying your speakers but I can't get email to you through my Audiogon account for some reason. You can get me by email through 'jarvis at empirisoft.com'.
-Blair
JamH, I'm interested in buying your speakers but I can't get email to you through my Audiogon account for some reason. You can get me by email through 'jarvis at empirisoft.com'.
-Blair
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