Rega P25 Setup Question

Okay, I'm getting confused now. My understanding was vertical tracking force was equal to weight... I thought anti-skating was a horizontal (or diagonal ?) force applied by a spring.

Section 3 in the manual mentions the "tracking force adjustment knob", then the Anti-Skating (bias) adjustment knob... and that I should set it to the same number as the "Tracking Force"... this leads me to believe there are two knobs that should be set to the same value... such as a "VTF" adjuster and a Bias, or antiskate adjuster... I see now that these are the same knob, or at least that there is only one, anti-skate knob on the turntable.

My problem I think, as far as getting even more confused, as Mofimadness points out, was that the heavy weight from expressimo is too heavy and putting it all the way forward was still not enough to balance my cartridge weight. I've put the stock rega weight on and it does in fact balance now and I have some room to move forward still... So, I'll get a scale and measure the 2.2g.

Does this sound reasonable ?

Thanks :)

Mrgoby, yes use the stock weight for now. The anti skate adjuster in NOT a knob, but a small silver "slider" that sits right under the arm on the black base. If the arm is in the arm rest, it's right underneath the arm just to the left of the cueing lift. It sildes from front to back and has markings 0, 1 ,2. Do you see it?

Okay, I'm starting to see clearly now. Thankyou Mofimadness, for I now see this anti-skating slider and all is made clear.

Just to get this straight, the knob/dial on the side of the tonearm is for VTF, though, correct ? So basically the way I had it setup wouldn't have damaged my cartridge, due to lots of anti-skate force being applied ?

Out of curiousity, why is it recommended not to use the spring loaded VTF, for better sound, or to prevent stylus damage, or both ?

I know the expressimo is supposed to cut down on gyroscopic resonance, or some such thing. Would it be worth it to add more weight to the stylus end and use the expressimo, or is there any disadvantage to doing such a thing ?

Thanks a lot for the help.

The whole idea with any tonearm and it's counterweight is to keep the weight as close to the pivot point as possible. With the way Rega uses their VTF dial, it adds a spring to the mix and makes you use the weight further back on the shaft, away from the pivot point. There are many people who actually take the spring out as a mod to the arm. They say it improves the sound. I have never done this, but trust the ears of several who have.

The way you initally had it would have worked, but it's kinda hard to tell how much VTF you had because you ran out of room on the VTF dial.

The aftermarket weights, like your Expressimo, not only add more mass, but drop the center of gravity below the shaft even more than the stock units. That's why it's shaped like a tear drop. These weights REALLY do work and sound better. I sure would try to find a headshell weight for your cartridge, (or change carts) to utilize the Expressimo.

You are correct in that the dial on the side of the arm is for VTF and slider is for anti skate.

great. that clears that up. Thanks so much for your time.