Tone Arm Springs

[paradisecs]

Are the springs the same across all the jukebox models or did they change depending on the era of the machine?

Stephen

[Ron Rich]

Stephen,
Changed 5 times since 1949, model B. See the parts books.
Ron Rich

[paradisecs]

Thanks Ron for the confirmation, I was pretty certain they were different. I had someone trying to sell me some springs for my black & grey box machines that didn't look right. They kept insisting they would work. I finally backed out of the deal.

Stephen

[vger]

I installed a new 350 cartridge from Victory Glass into a 100BL and checked the pressure with a PK Neuses gauge. The tension was around 8 grams as suspected. I adjusted the metal arms that go between the tone arm and the springs for as little tension as possible. I replaced the left side spring with a later model spring from VG and it was about 3 grams when playing a right side selection. Now when playing a left side selection the tension not surprsingly is high. The left spring also sags when the arm is parked after a left side play. Is another pair of springs sold that will get a M100 to around 4 grams? Should those adjuster arms be modified or custom made to allow less tension? I could not find a previous thread on the forum dealing with this.

[jukenorman]

In my simple world, the springs are always changed in pairs. Why did you only change the one?

Norman.

[vger]

Thanks for the note Norman. When I measured with the gauge, the one side was in tolerance, so I only replaced the one spring. I will replace the other one and measure again for both sides. I was hoping that someone had installed a 350 cartridge and had a for sure spring(s) that would be around 4 grams. The later model Victory Glass P/N 49-1953 are a bit too long.

Steve

[vger]

I replaced the right side spring also and adjusted the tension. It was more easy to get to that tone arm screw by pushing the mechanism assembly back about five inches.