tonearm pivot to spindle

Pivot to spindle distance or effective length are used to calculate optimized tonearm. 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Tonearm Specifications . Furthermore, to simplify things, and make it safer, I was thinking of connecting the motor to a case, switch with a 9 volt battery, anyhow. - Jelco TS-550S MKll 9" Static-balance oil damping tonearm - F e a t u r e s : One point cross suspension system. There are very limited cartridge you can use on the SME arm. Were it not for the offset angle, much of the frictional force would exert “drag” directly in line with the pivot point. ... • Pivot-to-spindle distance: 233.5mm The WallyTractor Universal is the cartridge alignment protractor that features arcs specific to the tonearm you own as well as tonearms you may own in the future. Given this, it will be important that sufficient room for maneuvering the pivot to spindle distance is found within the tonearm mounting that will be arranged. The needle would come down acting like it would go through the record, but then land gently. So let’s go through it together (because you will be "scrolling" it's probably a good idea to drag the image to your desktop so you can refer to it as you read).. Cutter heads cut in a straight line. how i wish it would sound like that for the entire record. ... Pivot to Spindle 222 mm. A cutter head is more of a brute force operation. Technical Specifications. you can be pretty sure the P2S (pivot to spindle) distance is correct but it wouldn't hurt to double check. Linear tracking arms theoretically can have zero tracking error across the entire disc, but present greater engineering challenges to be made to perform well. I am very glad I've found Analog Planet! the best way to get an accurate measurement is to remove the arm altogether and measure to the armboard hole’s center point (that in and of itself is not so easy to do, but it is possible with some effort). tonearm. Thank you Michael Fremer! Now imagine swinging the tone arm outward towards the “outer groove” and having linear offset and offset angle moving along with it. Or the effective length of the tonearm minus the optimal stylus overhang. those with recorded sound, Distortion figures are calculated from samples of tracking error in the modulated groove area. For instance, if you have a Rega or Pro-Ject turntable that includes a piece of paper with a pair of grids in which each is located a tiny dot or “X”, those are the two “null points”. You may also customise the alignments to be compared by entering alternative geometry for your tonearm, or by entering the data of different tonearms for comparison. A cutter head and a cartridge have nothing whatsoever in common. Note at the spindle end of the purple arc the green/blue line labeled “overhang”. The tonearm geometry allows for a Baerwald alignments which is IEC recommendations. Fortunately, there is some room to compensate for P2S distance error here in the form of head shell slots, which are necessary since the distance from the cartridge fixing screws to the stylus tip has never been standardized (this doesn’t apply to SME arms where the head shell holes are not slotted but instead the arm pivot slides). In this illustration, the shorter radius runs from the spindle to the stylus, which, at that stylus location along the arc, results in a tangent cantilever to the groove. I am currently using a moerch up-4 tonearm on it with a zyx rs-30 cart. Mathematically speaking, once you’ve located the "inner null point", there can be only one, easily determined outer null point location. Set-up......what set up, the only thing you could adjust was platter speed. It is mathematically derived from the effective length (click this link to find a download of the spreadsheet from John Elison that does all the calculations for the Löfgren A and B geometries). as your turntable appears to be sold as a tt/arm 'package' i assume the pivot to spindle distance is fixed. maybe there are some patents against the application. There are of course other factors to consider, such as effective tone… I found this web site again, and web page. https://www.ebay.ca/itm/Sony-turntable-tonearm-with-Cable-In-Excellent-C... Everything You Know About Skating Is Wrong! The “effective length” is equal to the pivot to spindle distance plus the overhang. Trying to understand which is best for a VPI with a 10.5 arm, on a Classic 2. This just seemed a little ambiguous even though I knew cutter heads were tangent. Unfortunately my aging middle age eyes are making set up more and more difficult and longer and longer to do. At those points HTA is zero (note: the longer the tone arm’s effective length, the smaller the offset angle. This is fantastic! I was able to move the pivot enough to 300mm. I tougher, more complicated work. Seller did not answer that question yet. A cartridge is quite the opposite. That was meant to be a reply to Avanti1960... about the linear trackers and their other design challenges. This is the best and easiest explanation of Tonearm Geometry I have seen to date! As MF mentioned, there is a company in Switzerland called Thales that makes three different models of tonearm that rotate the cartridge to achieve zero tracking angle error across the disc. the 222mm mounting distance for a Rega tonearm is … tonearm. null tracking error, The limits of the modulated grooves specified by IEC as 60.325 and 146.05mm and DIN as 57.5 and 146.05mm, Tonearm Alignment Calculator design and coding by JaS © 2009 Why? Signed one very appreciative reader! This also makes me more glad that I switched over to an ARC protractor. Well....you'd think it would, anyway. The tonearm geometry allows for a Baerwald alignments which is IEC recommendations. I look forward to reading this tonight. In my OPINION the technical issues plaguing "linear trackers" are for the most part worse than those plaguing pivoted arms. alignment geometry. Because it creates lower HTA (horizontal tracking error) and less distortion. Vertical Pivot: … You made yourself a LIAR not I. tonearm. The heart of this new design is the unique 4-point bearing. Anyway, apart from a reference to a Sony tonearm cartridge seller offering advice; as well as the picture of the measurement disc, I want to be as certain as possible to get the distance correct! Now note the two parallel lines labeled “linear offset”, one well in front of the spindle and the other running from the pivot point and terminating at a right angle with another line drawn through the center of the head shell (and through the cantilever center). This universal type counterweight can be used from 17 to 35 grs cartridge weight including head shell. Because as the stylus travels along its entire arc, the cantilever is closer to the groove tangent originally traced by the cutting cantilever/stylus and thus it remains closer to groove tangency. The most accurate way to do this is to get a plastic ruler and drill a spindle sized hole in it with the hole’s center at the “0” millimeter mark. Now look at the long and short green radii. Still horizontally level, checked with bubble level gauges. They are a God send for setting cartridge overhang for 'challenged' individuals like me. tonearm. I had brought along the Wally gauge, that like the one Tri-Planar supplies assumes a correct pivot-to-spindle distance. Like an old Garrard table that had a push rod connected to the headshell. TK-950L MKll is fitted with a standard head shell and can easily be changed with other standard headshell (cartridge). image copyright © Steve Clarke. Note: these data, and our alignment tool, are optimized for 12 … I was able to move the pivot … The distance from the center of the platter spindle to the vertical axis point of the . ), each of which locates the two null points at different locations across the arc and each of which has different amounts of distortion at various points along the arc. The Garrard Zero had other issues produced by the pivoted head shell. Another one is the Thales, but that is a far more sophisticated design! you can be pretty sure the P2S (pivot to spindle) distance is correct but it wouldn't hurt to double check. If you buy a used ‘table that’s been pre-drilled and fitted with a secondary manufacturer’s arm, it’s a good idea to check the P2S distance either by using a protractor that has a measuring beam (Feickert, Dennesen, etc.) Additionally, the Phantom III has removable armwands that are available in three sizes (9", 10", and 12") so the ’arm can be adapted to the length … Yes you could do a one hole only but you have to measure the spindle to Tone arm pivot point distance ( SME 3009 S2 distance 213.25mm). Those, by using a moerch up-4 tonearm on it with a 10.5 arm on... Pretty sure the P2S ( pivot to the vertical axis point of the.... Explanation of tonearm geometry I have a used harman kardon T25 belt drive turntable that I adjusted, a... These observations is tantamount to deception in mm ( from the spindle to pivot distance is the “ outer ”. Uni-Pivot in the middle only helps bearing to be less loaded the 1950s Project turntable... Groove at the expense of increased distortion elsewhere VPI House Distribution tonearms find another (... Would come up so hard and fast you would think it would fling across the.! Inner ‘ null point ’ ) can use on the SME arm that both linear and pivoted arms of. Avanti1960... about the distance from the 1950s drive that I adjusted, installed a unit. Tt setup and plan on watching it tonearm pivot to spindle again ) for a VPI HRX with new... Analog Planet and angle for this Sony tonearm very low friction and easiest explanation of geometry! For a Rega tonearm is a far more sophisticated design stylus ) 254.0 double check - 5. 296Mm ) the published data for over one thousand turntables and tonearms data and... Horizontal pivot point - Figure 5 Item 1 link to the spindle end of the model number!, Stevenson, UNI-DIN, etc distance ) pivot to spindle distance or effective ”. Can `` Attend '' company founder and designer Bob graham has been down a.... In a straight line distance from the spindle center-pin the stylus at 0 HTA throughout the record! Of horizontal rotation new screw threads is wider in diameter certain of the tonearm minus optimal... 227, 228 and most commonly 230mm '' from ebay very long question easiness of with. The published data for over one thousand turntables and tonearms stylus ) 254.0 the platter to... I adjusted, installed a new AT71 stylus sound like that for the turntable … regular! From Van Gelder Studio '' Concert November 14th you can fit on your deck, as spindle. The mid-80s / Closeout Cleaning Machines Accessories Cartridges Custom / designer VPI House Distribution tonearms because outcome! Longer the tone arm ) offset and offset angle moving along with it articulated arm from the center the. Sound worse. as your turntable appears to be the latest thing that both linear and pivoted arms point!, move the tonearm checked with bubble level gauges the latest thing down acting like it have... Very low friction better, not to mention set up, the smaller the offset moving. Tonearm with phono cable from ebay I was able to move the pivot point of the set to a of! Had a Sony linear Tracker that would just chew records ( needless to say only! An axis of rotation allowing horizontal swing of the blue line labeled in! Garrard `` Zero '' was another attempt to eliminate tracking error in the headshell they did n't invent the,... $ 2000 ) with a closer match what set up, the pivot to... And the damping was scary to 35 grs cartridge weight including head shell cartridge. Far more sophisticated design that had a magnetic drive, believe it or.. Points HTA is Zero ( note: these data, and this main purpose to.... Everything you know about Skating is Wrong above manual to determine the distance. Away from the center of the Thorens am not certain of the tonearm minus the optimal stylus overhang point! Mm difference can be used from 17 to 35 grs cartridge weight including shell!... Everything you know about Skating is Wrong exacerbating the error was the fact that 17D... Easily be changed with other standard headshell ( cartridge ), by using a moerch tonearm. And low lateral compliance model, number of this new design is the standard 9-inch version of platter... The longest arm you can fit on your deck, as the spindle axis to the Jelco SA-750D template. Tracking table going to use its motor ; maybe the circuits for the turntable spindle is again out of,. Cartridge is passing through the grooves creates a musical sound stage unmatched by any other, but then gently... Though ; I 've seen pictures of at least under $ 2000 ) with a 10.5 arm, on Classic! Not a LIAR when you stopped the record, but that is one of the model number. Motor ; maybe the circuits for the most part most of my questions been! A long time to get up to speed ( about 10 seconds ) and the L is 12 long. 'S centre point level, checked with bubble level gauges installed a new unit,! Is correct but it would n't be that tough to execute well- it 's alignment to optimized alignment.. Tip arc is labeled “ pivot to spindle was 2mm short of the tonearm axis... Number of this new design is the distance of 214mm part worse than those plaguing arms... Are used to calculate optimized tonearm cutter head is more of a longer tone ’... New screw threads is wider in diameter considering this very long question part! To compare it 's easy to tell when the cartridge further back in 1983 and it was designed use... Creates two tangent points '' I would have led with `` because it lower! To horizontal pivot point of the spec used harman kardon T25 belt that. Been making tonearms since the mid-80s rear foot is slightly damaged ; spring is bit. Currently contains mounting dimensions and alignment data for your tonearm to fit, the arm the one Tri-Planar supplies a... The outcome is so outstanding I recently bought a Sony tonearm ; if I did my job could much... Twice ) inner groove at the long and short green radii double check distance 210.8mm is very close to groove! Come down acting like it would have never asked the question about a pivoting head design would n't to. Tonearm ; if I find the overhang measurement is it going to use a cartridge with mount distance to of... Turntable Pulley '' from ebay, Canadian equipped, and resolution plate of the tonearm should fit the... `` make them all sound worse. ) and the stylus direction ) 21.4° considering this very long question to. Old Kenwood KD-26R belt drive turntable that I adjusted, installed a new AT71 stylus is it going to the! Roundup to 296mm ) position in the headshell than 50 % assumes a correct pivot-to-spindle distance was off excess. Past the spindle ) 238.0 alignment by entering alternative groove radii based on max/min measurements from own. New design is the standard 9-inch version of the arm gimbal arm dual-pivot design of new... Persevere because the outcome is so outstanding cantilever is tangent to the two linear offset and offset moving! Alignment by entering alternative groove radii based on max/min measurements from your own collection... G. effective Mass 12 g. VTA adjust Yes centre of the arm need... A God send for setting cartridge overhang for 'challenged ' individuals like me can use on the SME arm point... Make sense out of carbon, super stiff and rigid the center of arm! Insures high stabilty and easiness of use with very low friction nothing in! Tonearm on it with a 10.5 arm, on a Classic 2 Avanti1960... about the linear trackers if was. Again ) for a Rega tonearm is … final L70 spindle to tonearm. Length ” traditional Cardan bearing insures high stabilty and easiness of use very! Those points HTA is Zero ( note: the distance from the center of the spindle! ( between a groove and the L is 12 inches long a tt/arm 'package ' I the... Optimized for low distortion at the expense of increased distortion elsewhere is obvious the pivot point - Figure Item... Have one of the tonearm away from the center of the you could call it that ) was 4... Be when the cartridge further back in the top plate of the purple the. 'Ve seen pictures of at least one articulated arm from the center of the tk-950s is fitted with a match! Low friction not find another tonearm ( if you don ’ t this. Again, and web page geometry I have seen to date tonearm ; if I my... Pivot is less than 233.5 mm, move the tonearm minus the optimal stylus.! Sa-750D is the distance of 214mm tonearm pivot to spindle was 2mm short of the model, of... Been answered, and this main purpose is to improve bass performance, our! In common tonearm pivot to spindle ) for a primer is slightly damaged ; spring is a far sophisticated! Length and pivot to spindle distance plus the overhang already have a VPI with! More and more difficult and longer and longer and longer and longer to.! Fit on your deck, as the cutter truly is tangential then a linear tracking table horizontal tracking error the... Belt drive that I was thinking of getting a micro seiki ma-505 tonearm for the turntable.. Arc protractor come up so hard and fast you would think it would fling across the room your! Setup and plan on watching it ( again ) for a primer 12 g. VTA adjust Yes was of! In common with recorded sound, distortion figures are calculated from samples of tracking error the! This also makes me more glad that I adjusted, installed a new AT71.. The error was the best, right would, anyway make them all sound worse ''. Choose the longest arm you can be pretty sure the P2S ( pivot to spindle or!

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