Installing cartr.:slide it all the way to front?

Hi Overhang,

The overhang for the Rega 600 is 15mm. That is, your Shelter should be mounted on the Rega where stylus would extend 15mm past the center the spindle on line with the pivot (center mount). Unless the mount of your Rega is loosened, she might not travel that far.
Another way to go at it is the effective length. This is the distance between the pivot and the stylus. It should be 237mm.
But this is just the beginning ... dialing in a cart is part craft and part art. Sometimes dispensing with tools and trusting your ears can bring benefits, as well. So roll up your sleeves, do some research, download some protractors buy a Shure stylus force gauge and lift up your heart for all will come right!

DougDeacon,

A way one might keep optimal Rega mount distance and align ala Baerwald may be to relegate any protractor that constrains to the dustbin. I suspect that the one size fits all approach to some protractors that are not arm specific might have their own proximation pitfalls built in.
The two null points for Regas are 60mm and 115mm from center spindle. With some oak tag and a compass, couldn’t you just make up your own? Using a little plane geometry, you can even come up with “squaring off” alignment boxes. Just a thought in the direction that I’d consider before changing the arm’s throw.

Hi Doug,

It just seems so much like the tail wagging the dog to my sense of geometry, albeit novice in these matter that it is. How is it that an arm manufacturer’s mount and overhang and therefore its designed tracking arc get trumped by a protractor?
Maybe it’s the simpleton in me looking to reduce complexity, but I’ve got to ask… Why can’t one set the cartridge overhang using linear measurements as per the arm’s manufacturer for the designed tracking arc: Then use compassed circles for Baerwald, Stevenson or whomever one divines to have the null points one’s looking for, and use these to set just the stylus tangent? What am I missing?

I realize my jugular is exposed with this, so be easy on me. Thanks.

Mario

Doug,

Thanks for taking the time to explain this. I'm digesting - my mind coming to grips with what you're saying like a cold engine.
Instead of thinking and postulating, I'll apply these test that you have been good enough to provide in actual hands on experiments - and hopefuly break through to that Eureka moment that has eluded me up to this point.

On a side note, I have used the TTB mirrored protractor as well as oak tag (the latter atop a thin dynaflex type record). I certainly do like the mirrored gander that the TTB device affords. One note of caution with it to anyone with less than nimble hands; the alignment channel grooves are deep and rough and can catch and wrench a stylus/cantilever in a heartbeat.

Thanks again for your patience, Doug.

Mario