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Technique & Theory: PP servo and ZO Shot in the dark!

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    • CommentAuthorthager
    • CommentTimeFeb 2nd 2010
     
    Looking at upgrading my 02 to ZO but hitting some big problems. Was it my imagination a few years back that ZO advertised that a mechanical version ZO was in the works? This disappeared right after the lawsuit agreement? Was it possible that ZO was proposing to use a PPlike servo? I have some avionics guys at work that say a digital to mechanical is not only possible but has already been done in the DC-9 aircraft engine fleet. Obviously a company could not use the PP servo but an individual could for his own use apply it. Anyone out there reverse engineer one yet? Email me at: thager10 at hotmail dot com or whisper if you don't want to comment on this board. I'm half tempted to throw some money at it and I think I have the people that could pull it off.
  2.  

    First of all, that PP "servo" motor is actually a 1.8 degree stepper motor, and these are readily available on eBay, along with many other discount sources.  In fact, here's one now:  http://cgi.ebay.com/TAMAGAWA-STEPPER-STEP-MOTOR-with-REAR-SHAFT-150oz-in_W0QQitemZ260490710807QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item3ca674cf17

    Controlling it and coordinating it through some sort of I/O (input/output) drive unit is not difficult; I would think an algorithm utilizing simple step and direction commands would suffice.  A very dependable driver for this stepper can be found here: http://www.geckodrive.com/ and a discussion or two with Morris would probably be extremely helpful, though you should be prepared to be overwhelmed a bit by tech talk.

    If you want to discuss it further we can do so privately - pretty sure you already have my email.

    TW

    • CommentAuthorthager
    • CommentTimeFeb 3rd 2010
     
    Thanks TW. You put what the avionics guys told me into plain language. I'll get ahold of you later when I have more figured out. There is one expert in this field we want to get input from before we continue.
    • CommentAuthorthager
    • CommentTimeFeb 7th 2010
     
    Bit the bullet and am going with ZO conversion. Turns out my 02 has everything needed for e-control.
  5.  

     

    Kewl!  Log all expenses and keep us posted...

    TW

    • CommentAuthorDanE
    • CommentTimeFeb 8th 2010
     
    Thager, what boat/engine is Your 02 ?
    • CommentAuthorthager
    • CommentTimeFeb 8th 2010
     
    02 196 EX330
    • CommentAuthorDeke
    • CommentTimeFeb 8th 2010
     
    Bummer! Well, good for you Thager, but I was looking forward to reading about the servo conversion.
    • CommentAuthorkpickett
    • CommentTimeFeb 8th 2010
     
    I was looking forward to reading about servo conversion, too. Anyone else taking up this project?
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      CommentAuthorRoger
    • CommentTimeFeb 8th 2010
     
    Yes
    • CommentAuthorChef23
    • CommentTimeFeb 8th 2010
     
    I would love a way to get ZO in my 2002 Malibu.  I don't have the extra cash to upgrade right now.  My wife thinks college savings are more important.

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