Opps, on further thought, guess it would have to be a triple pole three position, center on toggle switch.  Do they make such a thing? Tracy
  ----- Original Message -----   From: Tracy Crook<mailto:lors01@msn.com>   To: Rotary motors in aircraft<mailto:flyrotary@lancaironline.net>   Sent: Tuesday, May 01, 2007 3:58 PM
  Subject: [FlyRotary] Re: Throttle body size/ other "Paul" issues


  Thanks Bob, I didn't get that part.  (or it was a different message?)  The part I got was asking for a diode fix to prevent the problem (message didn't specify what that was).  Paul then suggested a diode in series with the driver which would in-fact prevent the injector current from powering the EC2 but it also prevented the injector from firing as well.

  A triple pole double throw, center off switch might accomplish the single switch goal if wired correctly.  I have no problem with that but don't see how it is related to the 'diode fix'.

  Tracy
    ----- Original Message -----     From: Bob White<mailto:rlwhite@comcast.net>     To: Rotary motors in aircraft<mailto:flyrotary@lancaironline.net>     Sent: Tuesday, May 01, 2007 3:08 PM
    Subject: [FlyRotary] Re: Throttle body size/ other "Paul" issues


    To put the quote in context, here is the rest of it.

    "...
    His recommended solution is to put on-off switches for both the primary
    and secondary injector pairs.  His logic is this allows one to disable
    an injector pair if it is misbehaving, and at the same time prevent the
    backward EC-2 power phenomenon mentioned above.  I am not a fan of this
    solution - I wired my system with a single switch
    primary-both-secondary.  I figure if I have injector problems, I don't
    want to be flipping a pair of switches trying to find the right
    setting.  There is comfort in knowing I need only flip a single switch
    either up or down to disable which ever pair is not working.
    ...
    Mark"

    So it's really just an issue of his preference for having one switch
    instead of two.  Apparently he doesn't have a master switch for the bus
    either or didn't turn it off.  Otherwise, the only time the back power
    causes a problem is one of the reset modes for the EC2.

    Bob W.