Mint Protractor for the Classic Toneram 10.5i-SE

For the VPI Classic 1,2 and 3 series and the 10.5i series, Mike at VPI has confirmed the correct S2P distance is 258mm for an effective length of 273mm.

Brf,

Those numbers are definitely incorrect. I measured the S2P distance and it's precisely 262 mm. This is what VPI used to have posted on their website a few years ago before they took it down. It is definitely not 258 mm, unless S2P is not the distance between the sharp pivot point and the center of the spindle, which it should be.

Also, the effective length is not 273 mm. Based on the VPI protractor, it is probably 278 mm. I reset my cartridge last night using the Mint protractor and measured what looked like 277 mm, but that's way more tricky than measuring S2P so I might be a millimeter off. When I reset the alignment using the VPI jig the effective length is about an extra millimeter compared to the Mint. These measurements are essentially the same as in this excellent and very informative article on Vinyl Engine on the VPI tonearm geometry http://www.vinylengine.com/vpi-tonearm-geometry.shtml. This is the reason why I inquired about the parameters Yip is using as there is a lot of confusion about data for VPI tonearms.

Yes agreed mine is 258mm as well Classic 3. There is a caveat, if you completely remove the tonearm base, there is a bit of play with the 3 screws and the Plinth, you could move it one way or the other by 1mm or so. I think that is where the 1mm confusion comes from. But that is about it. About 1mm of play based on the pressure you put on the tonearm base as you tighten up the 3 tonearm base screws against the plinth. So based on the pressure you could get 259mm instead of 258mm by applying pressure as you tighten up the screws and you apply the pressure.

Actusreus, I suggest calling VPI. After reading your post, I recalled my email from VPI and my info is correct based on the email from Mike.

With respect to the MintLP, Yip fabricates the protractor based on the information that the "end user" provides him. VPI has confirmed that the info on Vinyl Engine is wrong. I would not be surprised to learn that a lot of MintLP protractors have a S2P distance of 262 based on the incorrect info on VE.

VPI has also confirmed that the overhang is 15mm, therefore, just add that to the S2P distance to get your effective length. S2P 258mm + 15mm = 273mm effective length.

Again, all of the above info comes directly from VPI