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Vinyl Asylum Welcome Licorice Pizza (LP) lovers! Setup guides and Vinyl FAQ. |
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Vinyl Asylum Welcome Licorice Pizza (LP) lovers! Setup guides and Vinyl FAQ. |
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In Reply to: RE: VPI analog drive system (ADS) posted by Todd Krieger on November 7, 2021 at 22:46:04:
@Todd Krieger-
What adjustments did you have to make? Care to elaborate?
Have you measured the temp of the motor (a BBQ thermometer works fine for this)? With the reduced voltage level set to -2, it should be ~110°F which will feel warm, but not 'hot'. At reduced voltage setting of -4, it will run even cooler. If it runs much hotter than 110°F, something is not right.
A couple of things wrt to the motors and temp:
The Hurst motor has windings that are wound on plastic bobbins and are thermally insulated from the case. Hurst specs the motor to operate at +30°C above ambient temp or 122°F, assuming ambient is 68°F, although the windings will run considerably higher because they can't dissipate the heat build up.
The SOTA motor has its windings in direct contact with the case, so the heat you are feeling is the motor dissipating its internal heat build up. FYI, the SOTA motor is rated for 85°C (185°F) max, although you would not want to run it at that temp. It uses precision ball bearings at both the top and bottom of the rotor instead of Hurst's single friction bearing so not only is it quieter and can handle higher radial loads without bearing wear, but it can operate at much higher temps.
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- RE: VPI analog drive system (ADS) - Pyramid 11:54:44 11/08/21 (0)
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