05-17-2022, 09:09 PM
Hello,
After installing a rather light VDH Colibri on my 12" Fatboy unipivot with about 1.25gr VTF as per maker's recommendation , i noticed that when the stylus gets in the run out groove the tonearm automatically skids back to a random position of the last track on the record. With cartridges which require higher VTF around 2.5gr this is not so evident.
It appears as if there is excessive antiskating caused by the lemo wire . This happens even with the lemo wire disconnected fully from the junction box/disengaged and even when held straight upright. I experimented by twisting the wire 3 times fully counterclockwise and this stopped. However the twist of the cable is thus so pronounced that the whole balance of the tonearm is affected ...this is not normal. I also tested with Wally Skater and i got a huge reading (counted over 20 hashmarks) evidencing the existence of strong horizontal toque forces.
I read on this forum instructions by Harry to heat the wire with hair dryer to relax the internal forces. I tried that however with little effect. It is not very clear how long i must heat and to what extent and at what distance from the cable though.
As i suspect the wire is twisted internally , would it be possible to remove cartridge , front grommet , disassemble the forward part of the tonearm from the rear part and turn the cable internally? Or would it be possible to turn the heatshrink tubing as it comes out from the top of the bearing housing??
Thank you for any advice.
After installing a rather light VDH Colibri on my 12" Fatboy unipivot with about 1.25gr VTF as per maker's recommendation , i noticed that when the stylus gets in the run out groove the tonearm automatically skids back to a random position of the last track on the record. With cartridges which require higher VTF around 2.5gr this is not so evident.
It appears as if there is excessive antiskating caused by the lemo wire . This happens even with the lemo wire disconnected fully from the junction box/disengaged and even when held straight upright. I experimented by twisting the wire 3 times fully counterclockwise and this stopped. However the twist of the cable is thus so pronounced that the whole balance of the tonearm is affected ...this is not normal. I also tested with Wally Skater and i got a huge reading (counted over 20 hashmarks) evidencing the existence of strong horizontal toque forces.
I read on this forum instructions by Harry to heat the wire with hair dryer to relax the internal forces. I tried that however with little effect. It is not very clear how long i must heat and to what extent and at what distance from the cable though.
As i suspect the wire is twisted internally , would it be possible to remove cartridge , front grommet , disassemble the forward part of the tonearm from the rear part and turn the cable internally? Or would it be possible to turn the heatshrink tubing as it comes out from the top of the bearing housing??
Thank you for any advice.