Hi Paul,
        One of the pix in this posting shows the alternator riding
        "backwards"
        from its normal orientation ( pix # Rb13b006.jpg ). This means the
        cooling fan built into the alternator is turning the opposite
        direction
        from its designed intent. Do you or anyone on here know if this
will
        lead to an overheating problem considering the high electrical
        demands
        of EFI systems? Thanx,  Dave M

        I don't know.

        Paul Lamar ...No rotor no motor.


    YES!

    We had a flight test airplane with heavy duty alternators, this was
    a Cessna
    Skymaster with a heavy amp load, we burned out several of them
before we
    determined that the ram air cooling was opposed to the cooling fan
    vanes.

    Do it right!

    Bob


Dave,

Some alternators are designed to run CW and some CCW.  Pick one that
runs the direction you intend to turn it and you shouldn't have a
problem with cooling.

Mark S.

Normally altenators can turn either way, just make sure the cooling
starts at the diode side first. Simply look for the proper fan for the
intended direction, some are bi-directional, and/or cool it by force
draft. Also, when it turns now in a different direction than previously,
make sure it has a key to lock the pulley (so that it will not spin the
nut loose) and give the brushes some time to seat again.
Werner.


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