Need a timed, engine shut down circuit

Discussion in 'The Projects Forum' started by LondonI, Dec 25, 2012.

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  1. LondonI

    Thread Starter New Member

    Dec 25, 2012
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    I am new to the site and want to say Hi. I need a circuit that I could use spark induction from a spark plug wire , On the first spark it has a 7 sec. timer, when engine runs above 3k RPM's within the first 7 sec it will kill the coil so there will be no spark. After 7 sec. engine runs normal. thanks If anyone can help me with this
     
  2. spinnaker

    AAC Fanatic!

    Oct 29, 2009
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  3. LondonI

    Thread Starter New Member

    Dec 25, 2012
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    This is not for automotive if that's what you mean. I need it to shut a ultralight 1 cyclender engine down .
     
  4. spinnaker

    AAC Fanatic!

    Oct 29, 2009
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    I'm guessing that would be off limits too. The reason for the automotive restriction is one of liability. I would thing an ultralight would be x10 of the automotive liability.


    But mods will have to weigh in.
     
  5. LondonI

    Thread Starter New Member

    Dec 25, 2012
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    This is more of a safety thing , I need somthing that will shut the engine down while on the ground say if the throttle was stuck wide open while is was being started . Now if the engine was stuck wide open at first start that would be 10X worse then a car I just want to prevent that .
     
  6. Papabravo

    Expert

    Feb 24, 2006
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    That may be your intention, but that is irrelevant. What happens if the device is activated while in flight. This kind of system is a bad idea because it cannot be made safe. It is the same for a device connected to the mains without an isolation transformer. This is the board of little sympathy and zero tolerance.
     
  7. bertus

    Administrator

    Apr 5, 2008
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    Hello,

    I am closing this thread as it violates AAC policy and/or safety issues.

    It is not directly automotive, but safety can not be garanteed.

    Quote:
    6. Restricted topics. The following topics are regularly raised however are considered “off-topic” at all times and will results in Your thread being closed without question:

    • Any kind of over-unity devices and systems
    • Automotive modifications
    • Devices designed to electrocute or shock another person
    • LEDs to mains
    • Phone jammers
    • Rail guns and high-energy projectile devices
    • Transformer-less power supplies
    This comes from our Tos:
    Terms of Service
    There will be enough sites where automotive questions can be discussed :
    Member selected automotive forums

    Bertus
     
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