Noise question

[carter]

Almost forgot, here are photos of the modified block where the head mounts. This was an attempt to solve the cutting angle issue.

http://www.flickr.com/photos/94964778@N06/sets/72157633244373398/

[vmspoland]

https://www.lathetrolls.com/download/file.php?id=94&mode=view

[vmspoland]

listen me : if this former {to be} guilt of the knife this you would have the continuous noise , the guilt lies pure and simple after the page not the equal work of the plate , perform korekcję of the plate according to drawings which I placed , I give you the greater tolerance , perform +/- 0, 01 mms [ 10 mikro of metres ] , the gum by she be thrown out is 100% the different thickness , a little will grow larger the noise of the engine , but he will not be audible for people he is below audibilities of the man , one can hear him only during the large compression of the strand from 2 Hz to 20 Hz , if you will make as I speak this not the equal noise will disappear , make also korekcję in the graphic proof-reader , cut off the strand 20Hz to the zero , the knife CUTTER HEAD should slope maximum 10 degrees , because otherwise the knife will tear out varnish , try to place the knife most perpendicularly to the plate , but , so that there be no noise , then the knife will not smear this what cut out , and will improve the strand of the transfer of high frequencies , and will not be the echo of the signal , listen intently into this film on you tube your signal was become by the serf of the very strong compression , I noticed that in Vinylium there is no shock-absorber of low frequencies , the oil- shock-absorber considerably would limit low vibrations of the jumping up knife


polski :posłuchaj mnie : gdyby to była wina noża to miałbyś szum ciągły , wina leży tylko i wyłącznie po stronie nie równej pracy talerza , wykonaj korekcję talerza według rysunków , które zamieściłem , daję ci większą tolerancję , wykonaj +/- 0,01 mm [ 10 mikro metrów ] , gumę wyrzuć jest 100% różnej grubości , trochę zwiększy się szum silnika , ale nie będzie on słyszalny dla ludzi jest on poniżej słyszalności człowieka , słychać go tylko w czasie dużej kompresji pasma od 2 Hz do 20 Hz , jeśli zrobisz jak mówię ten nie równy szum zniknie , zrób też korekcję w korektorze graficznym , odetnij pasmo 20Hz do zera , nóż CUTTER HEAD powinien mieć nachylenie maksymalne 10 stopni , bo inaczej nóż będzie wyrywał lakier , staraj się ustawić nóż najbardziej prostopadle do płyty , ale , aby nie było szumu , wtedy nóż nie będzie zamazywał tego co wyciął , i polepszy się pasmo przenoszenia częstotliwości wysokich , i nie będzie echo sygnału , wsłuchaj się w ten film na you tube twój sygnał został poddany bardzo mocnej kompresji , zauważyłem , że w Vinylium nie ma tłumika drgań niskich częstotliwości , tłumik drgań olejowy znacznie ograniczyłby niskie wibracje podskakującego noża

[carter]

Again, thanks for the detail. I long ago concluded the same thing about "the guilt of the knife" A bad stylus would result in continuous noise, not periodic noise. That makes perfect sense.

I would like to hear back from Flo about why my cutting stylus is so far from the surface in my current setup.

I know this will damage my credibility and be offensive to most professionals and engineers, but I'm going to post it anyway. Could this be the source of the problem?

http://www.flickr.com/photos/94964778@N06/8647997961/in/set-72157633244835434/

[flozki]

oooh that looks very bad.haha.
but it might can remove chip during cut.

no i just checked the picture.
i think its bad adjusted. so there is no free movement.
looks like you can not close the aluminum cover because of the piece with the spring attached gets out too much.

also i am not sure if you use the original technics rubber mat. that would help as well.
and the bearing screws are maybe not well adjusted. there should be no play but still no friction..

thats all i can say for the moment.

[carter]

which screws are the bearing screws? the ones that the block (with cutting head attached) pivots on? i've fined tuned those many times to see the effect, i think i understand the point that there is no lateral play but the head rotates freely.

the screw for the cover is only attached on one side for easy access. I was focused on the spring for a while as the source of the problems, somehow I thought it might be transmitting noise based on the tension.

do you know the thickness of the Technics rubber mat? Maybe I don't have one.

About the cat, in all seriousness, she decided she liked to sit or sleep on one or both of my Technics about 2 years ago, and I can't keep her off. It never occurred to me that she me be slowly damaging them but her weight doesn't distribute evenly. She's usually off the center because of the spindle.

I don't have a cover for the thing, but obviously I need to get one if I'm able to make adjustments to get this thing working properly.

In the end, there is no question that there is vertical movement of the cutting head during each rotation while cutting. I can see it, so I think that our man in Poland is absolutely correct about this.

[opcode66]

You can get a new center spindle bearing on ebay very cheaply. They are not hard to replace. That is the only part that might get damaged. Which I doubt.

[carter]

this?

http://www.ebay.com/itm/Technics-SL-1200-1210-Motor-Bearing-Centre-Shaft-Spindle-SFMZQ20-01A-/221206294456?pt=UK_AudioTVElectronics_HomeAudioHiFi_Turntables&hash=item3380ec2fb8

[opcode66]

Yes sir. That is exactly it. That is the center spindle berring. All you need is a philips head screw driver.

There are a lot of screws. So, be mindful as you remive them. I can point you to some videos on youtube that detail disassembly. I can also answer any questions here.