Anyone try the replica B-60 Fidelity Research VTA?

Can one of you please tell me how much the Cart VTF - "Vertical Tracking Force" changes.....

from the low range point of the B60 to the high range point ?

Measure your carts VTF at the B60 lowest point, and the B60 highest point .... please.

I am curious

I stated in my previous post I never owned the B60 hence I would like to know the VTF difference.

thanks

@ct0517 May i ask why you are concerned about it ? It can be verified with any tonearm, in reality there is a minor difference in VTF if any.   

ct0517, The answer to your question will vary according to how the tonearm is installed into the B60.  If, for example, the lowest adjust point on the B60 places the tonearm parallel to the LP surface, then the highest adjust will raise the rear end of the tonearm with respect to the LP surface and will therefore slightly increase VTF.  And you can see how the result will change, for example, if the lowest adjust point on the B60 places the tonearm either raised or lowered, at its pivot point.  So, yes, there will always be a change in VTF associated with changing VTA, but there is no rule you can derive from the experiment you asked us to do, unless you know how each responder positioned the tonearm to begin with.

chakster
@ct0517 May i ask why you are concerned about it ? It can be verified with any tonearm, in reality there is a minor difference in VTF if any.

Chakster. I did not say concern, I said curiosity. I am curious and asked for information from someone reading on this thread with a B60. Surely with a slick accessory like the B60 it's what, a 3-4 minute exercise, to give me a number.

i.e. If when the B60 is set at the low point, and your cart weight is say 2.2 gms. How much then is the cart weight when you move the B60 to the highest point in the range - for that persons specific setup.

That's the number I asked for

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Lewm
ct0517, The answer to your question will vary according to how the tonearm is installed into the B60. If, for example, the lowest adjust point on the B60 places the tonearm parallel to the LP surface, then the highest adjust will raise the rear end of the tonearm with respect to the LP surface and will therefore slightly increase VTF. And you can see how the result will change, for example, if the lowest adjust point on the B60 places the tonearm either raised or lowered, at its pivot point. So, yes, there will always be a change in VTF associated with changing VTA, but there is no rule you can derive from the experiment you asked us to do, unless you know how each responder positioned the tonearm to begin with.

Thank you Lewm. As I assumed. Still curious what the VTF range is for your B60 setup. btw - raising VTA lowers VTF and vice versa.

IMO if this B60 raises and lowers the arm consistently and smoothly each time, as expected, it is a good accessory - as long as one remembers to re-adjust for VTF after. For this same reason the B60 does not make the tonearm VTA/SRA on the fly. Some carts are very sensitive to VTF changes. The changes in sounds we hear when changing the VTA /SRA could also be influenced by the higher or lower VTF. Just sayin....

Now if this B60 did this movement well, and at the same time kept VTF intact, (the same) - that's playing in a different league. I would call it an excellent accessory at this point ....even genius.

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Nandric (Nikola)
Regarding VTA versus SRA.
It may be a different "focused" area of measurement. But the target is the same. Relative angle of the stylus to the groove.

In this hobby - and lets face it - to spend this much time discussing this one aspect - it is a hobby, the objective if possible is to try to duplicate as much as possible the actual cutters stylus angle. The included cut angle that is in the record.   
All of things that cause variations to these angles, both on the cutters side and the reproductive end (playing the record), are well documented.

This means these adjustments we are making need to be done by ear because we have no idea who cut the record that day and at what angle.  Again just saying....

Happy VTA'ing SRA'ing