I picked up some washers at my local hardware store that at least meet the spec of the washers in your photo. The container shownin the photo says "1/2 in OD". But the washers shown on the right hand side clearly say "1/4 (meaning 1/4 inch) OD". Although this is ambiguous, I opted for the 1/2 in OD version. What strikes me, besides the ambiguity in relation to OD, is how hard and stiff these washers are. In fact, I would like to be that hard and stiff. Can you clear up the question of Outer Diameter?
JVC Victor Tonearm Counterweight Sag Repair
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I posted full text and photos of the Tonearm Counterweight Sag Repair Procedure here: https://www.audiogon.com/systems/12014 This part from Home Depot is all you need
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lewm Can you clear up the question of Outer Diameter? "too smart for our own good", you have heard that I expect. If a washer could clearly SAY, then it would tell you the time hidden mystery contained in the codes clearly MARKED i.e. clearly marked 1/4S You have erroneously taken the marking ’1/4S’ to mean a diameter. I believe in plumber speak it relates to pipe/valve seat size, here’s several marks which a plumber would understand. The letter (S in our case) may indicate the angle of the bevel.
size #00 is 1/2" OD (one half inch outer diameter/diametro exterior) full text and photos here: https://www.audiogon.com/systems/12014 The one I used (everbuilt model 866210) (home depot sku 1006959446) has a 5mm diameter center hole which happens to perfectly fit the 5mm diameter shaft of the concealed threaded brass piece. The washer coincidentally happens to be 1/4" overall thickness, the bevel appears to me to approximate a 45 degree slope. It feels hard, however it is softer than you realize, the force of the counterweight is surprisingly large which is why I noted tighten ’very snugly’ in assembly step C below (otherwise it will sag). ///////////////////////////////// JVC Victor Counterweight Sag Repair (Tonearms UA-7045 and long version UA-7082) Three allen head set screws (2 sizes) are involved. (presumably metric, however I bought a 1/16” size key that fit the pair in my arm post that retain the chrome collet). Only One Repair Part Needed, size #00, ½” OD Beveled Rubber Washer. Note: Inside hole is 5mm diameter, presses onto 5mm diameter brass shaft shown below. (everbuilt model 866210) (home depot sku 1006959446) Concealed Brass Piece, 18mm overall length, 8.5mm diameter rubber shoulder fits inside the chrome metal collet, 5mm diameter brass shoulder, threads face the counterweight. ASSEMBLY Three ‘joining’ pieces loosely pre-assembled.
Note: The notches in the chrome collet face the arm post. The notches originally kept the brass piece from spinning when the counterweight is very snugly tightened onto it. IF it now spins for any reason, simply pre-assemble the counterweight ‘outside’ of the post (when able to grip it with a tool), lastly fasten the completed assembly into the post with the two allen head set screws.
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