I am re-designing the tone arm on one of my Lenco decks:
It uses the same Lenco knife edge bearings (as in the SME II & III) but it now incorporates some carbon fibre tube, for reduced resonance, a new (well alternative) headshell, and a rather novel counter weight design.
The idea is that the left weight has a helix cut into it, which decouples it from the rest of the weights. The right hand weight is again split into two, with only the left part of it clamped to the free stub.
here the new wand compared to the old wand, hopefully the pivot to stylus distance will remain the same! It may never enter the premier division of tone arms, but it has to better than the original.
(Bias arrangement and wire needed to complete).
An externally hosted image should be here but it was not working when we last tested it.
It uses the same Lenco knife edge bearings (as in the SME II & III) but it now incorporates some carbon fibre tube, for reduced resonance, a new (well alternative) headshell, and a rather novel counter weight design.
An externally hosted image should be here but it was not working when we last tested it.
The idea is that the left weight has a helix cut into it, which decouples it from the rest of the weights. The right hand weight is again split into two, with only the left part of it clamped to the free stub.
An externally hosted image should be here but it was not working when we last tested it.
here the new wand compared to the old wand, hopefully the pivot to stylus distance will remain the same! It may never enter the premier division of tone arms, but it has to better than the original.
(Bias arrangement and wire needed to complete).
Interesting.. Hope it works as well as you hope. Please do report back, and if not a member already you should check out Lenco Heaven - Forum about Goldring Lenco Turntables - there are people there who would be very interested in this.
Hello cats squirrel,
That intermediate component with the helical cut is actually what is called a "zero backlash flexible coupling". It is meant to connect two shafts that are not aligned correctly. I've never seen it used this way. Neat idea. Thanks for posting.
Sincerely,
Ralf
That intermediate component with the helical cut is actually what is called a "zero backlash flexible coupling". It is meant to connect two shafts that are not aligned correctly. I've never seen it used this way. Neat idea. Thanks for posting.
Sincerely,
Ralf
Hi Kwevin,
thanks for the info, but I left Lenco Heaven a while back. Least said, soonest mended! I will report back the findings, here, though.
hi Ralf,
spot on, in fact, they are both CNC couplings, and seem to fulfill their new role rather well, although I have not tested their efficacy on audio duty yet!
kindest regards
Cat
thanks for the info, but I left Lenco Heaven a while back. Least said, soonest mended! I will report back the findings, here, though.
hi Ralf,
spot on, in fact, they are both CNC couplings, and seem to fulfill their new role rather well, although I have not tested their efficacy on audio duty yet!
kindest regards
Cat
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