Turnable database with TimeLine

Actusreus.
Assuming
1)the stylus drag is constant throughout the LP
2) the TT slows due to stylus drag,
3) speed control is open loop ( maybe)
Then it will naturally increase in speed as it tracks towards the centre grooves.
This is a torque moment effect. On the outer grooves, the drag is acting on a larger radius so it requires more torque from the motor to counteract this.

I tried using my Fieldpiece digital tachometer again last night. I tried three l locations and placed the device on a stationary platform. In each test, the device read 33.XXX but the XXX had slightly different values at each location. These speed readings did not change when I introduced stylus drag. In fact, once the 33.439 or 33.352 was fixed I could not seem to get it to change value without turning the unit off and resetting it to zero. Nor could I get it to ever repeat a reading. Both the TimeLine and the KAB show the effects of stylus drag on my turntable. Perhaps the tachometer is just not sensitive enough to tiny changes.

I thought, this is a Database with Timeline and not a Database of "Turntable Owners Mystery Collection"?
To write somerhing useful for readers, the Kuzma "Reference" runs also with wrong Speed (too fast)....the search goes on :-)

Peterayer,
Your Dealer is wrong....

good morning Henry,
so you got one of the very early Timelines that flashes once per 1.8 seconds (33) ?
there were only a hand full of those that went out before the software was changed.
if so, let me know and i will get you a new chip.
Ron

As it turns out.....mine DOES have the new chip and flashes 6 times :-)

Actusreus,
I'm not sure I understand your question?
The turntable is not speeding up as the tonearm tracks toward the spindle....
I sense that many people without 'hands-on' experience with the Timeline may have difficulty understanding how it functions?
If the turntable is rotating at exactly the correct speed (33rpm or 45rpm).....the laser will 'hit' the wall at exactly the same spot every revolution.
Putting the Bluetak marker on the wall makes it easier to gauge the position of the 'hits' accurately.
If the turntable is running faster than 33.33rpm......the laser will hit the wall slightly further to the RIGHT of the marker every revolution so that the position will move further to the right at every revolution.
If the turntable is running slower than 33.33rpm (as is the case with the Raven)....the laser will hit the wall slightly further to the LEFT of the marker at every revolution and will move further to the left at every revolution.
With the Raven...you can see that the laser is moving approx 1mm to the left with every revolution....and it is consistent.
This probably equates to a speed of 33.31rpm instead of 33.33rpm.
When the arm is lifted at the end....you can see that the laser hits the wall mark at exactly the same spot at every revolution.
This indicates that the turntable is maintaining 33.33rpm without load.