Played with levelling of feet and springs and groove on platter I’m my Michell gyro. I almost got back to the lowest peak wow I once had (0.05% on iPhone app)
old best result :
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the phone app and shaknspin are quite consistent on peak wow and test record also( Test record TRS1007 ang W&F software WFGUI)
Everything is relative I guess so if I can get the variations down and then use HR supply to set correct speed I am happy-
I use a light puck to put the phone on to have it over center of the spindle, so the phone in in center, Shaknspin also
I am waiting for the Iphone app to plot curves form Shaknspin. I believe Shaknspin should be the most accurate method, removing testrecords and eccentricity form the equation. The most confusing is the terms and definitions. The phone app shown the peak deviation and call it wow&flutter which it is not. Shakenspin calculate many parameters.The best thing is actually to look at the curves
I also started with 0.2% peak Wow& flutter, but spending a lot of time experimenting brought it down. Also without a good belt low values are not possible, I use a 15 year old belt, all new belts give worse results. A non-Michell Nitrile belt gave me 0.8%!!
Consistent with what?. The least consistent thing here is your turntable, unless you have a Technics direct drive
Yes phone need to be placed consistently to give reproducible results- . I get quite consistent results on both phone and shakenspin. for example 5 consecutive runs within 0.01% difference.
SP-10MK3 or SP-10R.
Are the SP-10s less heavy?
I guess it depends on the plinth..
MK3 motor is 40lbs and MKII is 21lbs. MK3 in a B5 plinth with an arm is pushing 85lbs, though there are lighter plinths out there. At the end of the day still appreciable heavier than a 1200.
That is life with a suspendert bent drive. Especially if the belt is not optimal. I also get more variations day to day with some of my other belts. The Michell Tecnodec I Measured was more consistent than the Gyro but I did not check day to day variations. DC motors also drift more on than AC that Project uses. Looking at the HifiNews lab test Projects turntable systems are among the better , and AC drive I believeEvery time I get my Michell dialed in to 33.33, the next day its different (i.e. like 33.28 or 33.41).
I have the pricey HR PSU, but to be honest, I had more consistent results with the Project Speed Box belt drive I upgraded from.
Especially if the belt is not optimal. I also get more variations day to day with some of my other belts. The Michell Tecnodec I Measured was more consistent than the Gyro but I did not check day to day variations. DC motors also drift more on than AC that Project uses. Looking at the HifiNews lab test Projects turntable systems are among the better , and AC drive I believe