chris_f
Active Member
Have been curious and just havent gotten around to asking yet but what should the compressed height of the springs be for proper tuning?they'll fit. however, the "tuned frequency" will be way off.
Have been curious and just havent gotten around to asking yet but what should the compressed height of the springs be for proper tuning?they'll fit. however, the "tuned frequency" will be way off.
32mm at the least, 30mm at the most. they all should be even. that should get you 3.5hz - 3.2hzHave been curious and just havent gotten around to asking yet but what should the compressed height of the springs be for proper tuning?
You measure the compressed height of the spring with it loaded . measurements about in marcs post. So the height of the spring should be no less than 30mm with everything in place .Marc/anyone, probably a stupid question, but how do you measure the frequency when adjusting the springs?
You measure the compressed height of the spring with it loaded . measurements about in marcs post. So the height of the spring should be no less than 30mm with everything in place .
no, the number of jounces per second. On my set up jig before any damping is applied, It will jounce for several minutes. the frequency in a spring is determined by the amount of its deflection from static height due to load. A compression coil spring will not have a controlled resonate frequency until its deflection from static (loaded length) is 80% of static. it will have a frequency above that, but it is not controlled. It is more like a truncated sawtooth wave at top and bottom. The jounce should resemble a sine wave. in a controlled sine wave , it is burning off 18db per octave. in an uncontrolled sine, it is transferring un damped energy into the subchassis at that frequency. Lets try this as a "visual" undamped car springs (bad shocks) it will have approx 1.5-1.7 hz. it may make you car sick to ride in it. put on truck springs, the frequency will be higher, and over those same bumps not only are you getting car sick, but you're getting a good jolt at top and bottom of spring travel.No he wants to measure the frequency of the springs once loaded.
Not 100% sure but it might be the number of bounces after the spring has been excited . So for us it be 3.5 bounces before it settles? Once again not quite sure on this.
one can't change the frequency when adjusting the springs, one can only adjust the ride height relative to the top plate. the frequency is determined by the mass of the suspended pieces.Marc/anyone, probably a stupid question, but how do you measure the frequency when adjusting the springs?
I would suggest using Conrad Hauffmans protractor printer, if you havent it is an amazing thing.i got curious recently and does anyone know of a cartridge overhang / alignment gauge for the AR's that have the S wand mod?
i know its reccomended to be in the 226-228mm ballbark but dang if its hard for my eyes to read a ruler that small. i think im at like 222 but not much room to move the cart out further.
I would suggest using Conrad Hauffmans protractor printer, if you havent it is an amazing thing.
http://conradhoffman.com/TemplateGen.zip
How far into the tonearm block is the wand? Can you slide it out some?
if the arm has the SME type mount tube, and it a technics type tube, overhang to get close to baerwald will be 18-19mm (228-229 total length from pivot center to sylus tip) and maybe a deg or 2 of toe in.i got curious recently and does anyone know of a cartridge overhang / alignment gauge for the AR's that have the S wand mod?
i know its reccomended to be in the 226-228mm ballbark but dang if its hard for my eyes to read a ruler that small. i think im at like 222 but not much room to move the cart out further.
hmm thats a windows file i'll have to borrow the wifes computer.
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mac i can set up emulation, just havent yet easier to borrow her laptopAre you using Linux?
If so the file will run using WINE,
if the arm has the SME type mount tube, and it a technics type tube, overhang to get close to baerwald will be 18-19mm (228-229 total length from pivot center to sylus tip) and maybe a deg or 2 of toe in.
Are you using Linux?
If so the file will run using WINE,
This has a good explanation, its from the spindle to the stylus with the arm set over the spindle.mac i can set up emulation, just havent yet easier to borrow her laptop
i seem to be setup correct right now, but yes its sme mount and technics type tube. the 18-19mm would be from what point?
This has a good explanation, its from the spindle to the stylus with the arm set over the spindle.
https://www.analogplanet.com/conten...g-double-null-point-grid-type-alignment-gauge
your arm tube may not be in as far into the pivot block as i normally set these days. Don't remember. either way is fine. might check overall effetcive lengthSo I set my XB with 15mm of overhang and aligned it to a Baerwald mirror protractor. No? I recall 16.2mm of overhang and square in the headshell?