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We have dozens of volunteer opportunities waiting for you—browse the new opportunities here on the Member Connection and sign up today!

Latest Discussions

  • Profile Picture

    RE: Battery voltage

    Posted in: Open Forum

    Here is my guess as to what is happening with the battery voltage. A real battery will have some internal resistance.  Think of the circuit as being an ideal battery with a resistor in series.  When their is no current, i.e. the ignition has been off for some time, there will be no voltage drop across ...

  • Posted in: Automotive Sector

    Anyone have reference for sizing engine crankshaft balancer?  I am trying to figure out the hp dissipated in the balancer and the frequency(s) associated with peak dissipation(s).   I have cruised around in Google with no luck. ------------------------------ Jerry Alcone Retired Albuquerque NM ------------------------------

  • Posted in: Automotive Sector

    From personal experience and at least Ford Service Bulletins the 100K spark plugs are great until you try to change them and find that they have bonded to head resulting in broken plug or stripped threads.  A pleasant Saturday morning chore turned into several thousand dollar head replacement job, but ...

  • Profile Picture

    RE: Battery voltage

    Posted in: Open Forum

    Current models keep a lot of stuff running after ignition is killed.  A big one is the radiator fan(s) that will run for several minutes.  Also headlights.  Many new cars will run battery down in a week or two if left parked because they keep many of those great accessories that we all need powered up. ...

  • Posted in: Open Forum

    Hello everyone, My name is Prashant Khandelwal, graduate student at Wayne State University, Detroit, MI. My area of interest is vehicle crash-worthiness (CAE), occupation protection and restraint systems. I am also interested in understanding bio-mechanics of injury during vehicle crashes and prediction ...

  • Posted in: Open Forum

    Hi, I am new to SAE and I am an Inside Sales Executive at Granta Design. We are the leader in materials technology. We help people assure they are making the best material decisions as well as storing their providing tools that make better, safer and greener products. ------------------------------ ...

  • Posted in: Open Forum

    I am not a battery expert by any stretch but I would expect to see some slight bump in battery voltage when additional load is removed. Many vehicles have some continued load on the battery after the ignition is turned to off (fans, radio, etc can all remain on for a time).  I am not sure if those loads ...

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