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Riggle Wiggle? (post correction - new thread)

71.237.139.164
Posted on January 11, 2008 at 20:03:21
Maprik
Manufacturer

Posts: 131
Joined: November 23, 2000
 Hi Pete,

First of all I have the VTAF installed on my Rega P25 and I love it. Being able to just dial in the sound of a record is just SO great.

My question though is that my RB600 wiggles around quite a bit in the bushing. The bushing is nice and tight in the arm hole but the whole arm moves about when I am raising and lowering the cue arm. Of course, when the needle is down and the record is in play the arm is at rest and doesn't move around. I'm assuming the tight tolerances between the adjuster and the bushing keep the arm in perfect position.

But is this normal to have so much movement of the arm? When I'm raising and lowering the tonearm with the cue?

Thanks!

Phil

RE: Riggle Wiggle? (post correction - new thread), posted on January 11, 2008 at 22:50:46
PeteRiggleAudio
Manufacturer

Posts: 27
Location: Kennewick WA
Joined: April 27, 2004
 Phil:

With the VTAF I seem to have learned to operate the lift/lower mechanism of my Rega arm and my SME 3009 Series II unimproved arm without much movement of the arm during cueing. It will be interesting to see if other users will give us some input on this.

It does help to keep the guide assembly clearance fairly small to minimize wiggle allowed by the guide. On the other hand, the guide assembly should not be made tight, as getting it too tight can interfere with staying seated during VTA adjustment.

You are right that the small radial clearance between the VTAF Adjuster Screw and the VTAF Bronze Bushing does keep the arm mounting well centered. The .003 inch radial clearance between the adjuster screw and bronze bushing translates to a tracking error of .019 degrees, negligible when compared with the unavoidable tracking error of about 2.3 degrees characteristic of pivoted arms.

Can you comment on the sonic results you experienced when you incorprated the VTAF?

Yours, Pete, Pete Riggle Engineering and Audio

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