Has Anyone Removed & Replaced the VPI Arm

That was my thought exactly, however, if you go to the VPI website, they are offering that particular upgrade. ( they mension it in big type right on their home page) When I talked to them, they said it was a very easy swap, and that the table didnt have to be redrilled. They did say, that 2 small holes had to be drilled for little screws, and they said it was very easy to do.

Stevecham,

Good question, but the answer's easy to discern from product photos.

The JMW 9 and 9 Sig's mounting shaft is located directly beneath the arm's pivot point.

The mounting shaft for higher model JMW's is located beneath the VTA tower, not beneath the arm bearings. This offset moves the pivot point farther from the spindle.

In addition, the photos make it look like you could rotate these arms in the mounting hole. This would let you fine tune mounting distance before locking it down, which would also give you the opportunity to try different alignment schemes.

I've never actually worked with a JMW so I can't really answer Stringreen. Are you sure there's no set screw through the side of the plinth? Maybe just a small hole (or two) for a hex key? I'm just speculating....

Interesting, but without a bolt on the bottom to hold the arm tightly to the turntable itself, how does one remove the arm? Thanks

Stringreen,

From the photos it looks like you have a mounting collar screwed down to the plinth. There's a set screw (or two?) going through that collar from the side. Loosening the set screw(s) lets the arm slide up and down, right? Doesn't it just slide right out?

You could always call VPI. They probably know! ;-)

I recently bought a JMW-10 arm, and then some upgrade parts from VPI, to install as a second arm on a custom plinth. This arm does not require a mounting hole as do most other arms. There is a base plate for the arm that requires three machine screws to secure to an armboard or plinth. Everything for the arm itself and the connecting wires attach to this plate.

Therefore, mounting is simple: measure the base plate location position per VPI, drill three small holes for the base plate, install three screws, and set up the arm.