Mred,
I also have an interest since I have a Well Tempered reference arm & table also. Note that my table goes back to the square motor design.
I also have a Wally Tractor and Wally sent me one that had an effective legnth of 235mm, same as a Graham. My spindle to pivot measures about 217mm. Note that this is a pain to measure since the pivot is where the threads intersect.
I've assumed that the effective length was the distance from the pivot to the stylus tip - thus this measurement depends on the cartridge that you'd be using. - I think! I'm using a Shelter 901.
As far as offset angle, are you referring to the angle of the cartridge mounting head? If so, I measured that angle at 68 degrees.
Hope this doesn't confuse any further. I'm going to try to remeasure again & I'll let you know what I come up with.
Steve
I also have an interest since I have a Well Tempered reference arm & table also. Note that my table goes back to the square motor design.
I also have a Wally Tractor and Wally sent me one that had an effective legnth of 235mm, same as a Graham. My spindle to pivot measures about 217mm. Note that this is a pain to measure since the pivot is where the threads intersect.
I've assumed that the effective length was the distance from the pivot to the stylus tip - thus this measurement depends on the cartridge that you'd be using. - I think! I'm using a Shelter 901.
As far as offset angle, are you referring to the angle of the cartridge mounting head? If so, I measured that angle at 68 degrees.
Hope this doesn't confuse any further. I'm going to try to remeasure again & I'll let you know what I come up with.
Steve