Question on z motor

[skeeterman]

Quick question on the difference between old z motor and newer replaced motor.
I stumbled across an old compucarve for sale and I don't know if the z pack had been replaced, I cand find the pics that Al has placed on here several times , want to be able to identify before I make offer
,anyone direct meto the pics real quick steve

[DocWheeler]

You could count the conductors in the ribbon cable - 14 (new) vs 18 (old).

[fwharris]

Also, The old version with out the a907 upgrade the cover switch wires plugs into the bottom of the card. With 907 they plug into the top of the card.

[Digitalwoodshop]

Motor is a motor... It's the little circuit board attached to the motor that is either the old 18 pin or the new 14 pin. A old motor even with long fins can have a new 14 pin board attached.

Good Luck,

AL

[skeeterman]

Oh I thought the motor had to be changed , I still have the old z motor from my old a model that I changed out a long time ago that had long fins , so it is still good then?
Going to look at the machine for sale tomorro, found it while I am out of town and needed to know what I was looking for(I thought it was fins on motor)

[Digitalwoodshop]

Sent reply to PM but for the others. The early motors had a problem with the plug on the encoder snapping a solder joint. It was limited to very few in the big scale of things but I had one. So early on the A907 included the motor. Now I believe it is just the 14 pin cable and 2 circuit boards.

The Trick to remember is to remove that little 18 pin circuit board from the motor and trash it.... I call it a 16 pin in the close up picture above but it is 18... IF you plugged a 14 pin cable into a old 18 pin motor circuit board the wider fins of the 14 pin cable will short out the 18 pin thinner fins and you could short out your computer.

AL

[skeeterman]

Purchased said machine and it does need the A907 upgrade , owner has put 143 hrs on it without the upgrade but I feel like I got a good deal on it , I have spare parts to do the upgrade . Also has the quick change chuck which will have to be replaced

[Digitalwoodshop]

The 18 pin system DOES work and a few had very good luck with it.... but the down side is a failure could snap a expensive bit or make expensive fire wood.

AL