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05-24-2018 12:09 AM

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  • Posted in thread: Mag condenser question on 05-12-2018 at 07:27 PM
    The purpose of a capacitor in a magneto is to provide a series-resonant system with the
    inductance of the magneto coil. The presence of the capacitor minimizes the rate of change
    (dE/dt for you math w...

  • Posted in thread: Replace Throttle Cable..... on 05-07-2018 at 10:12 PM
    The throttle cable on my J-4 has a wound exterior - something like a traditional Bowden cable
    for carb heat etc, but much heavier. I put a deliberate dent using a wire cutter in the
    restraining clamp ...

  • Posted in thread: Com radio on 05-02-2018 at 10:45 PM
    Add a silicon diode in series with the + supply for each 0.6V that you want to reduce the
    supply voltage to get to 11 VDC. Some ICom radios don't like to be in use while being charged

  • Posted in thread: Resurrection on 05-01-2018 at 03:48 PM
    If your compass is reasonably accurate and can be compensated traditionally, ignore this. But
    if it isn't, remove the biggest screw on the front of the compass. You will gain access to the
    two compens...

  • Posted in thread: Com radio on 04-29-2018 at 06:15 PM
    I have a 1941 J-4 with shielded ignition & new Slick mags, an ICom A-2 receiver-transmitter (2
    watt) & an RST Intercom, and a DC H10-40 headset modified with a Headsets Inc analog ANR
    modification. Po...

  • Posted in thread: I have 3 extra Impossible Handheld mating Connectors on 04-22-2018 at 07:22 PM
    According to Digikey, no stock, but will be available again ~ Jun 15.I used one of these cables
    with an ICom A-2 or A-6 transceiver, one of Jim Weir's RST intercoms, a 12V battery from a line
    loss com...

  • Posted in thread: I have 3 extra Impossible Handheld mating Connectors on 04-22-2018 at 06:23 PM
    Offer - If anyone is looking for the 2.50 mm dia 4 conductor cable about 6 ft long with that
    connector to semi permanently connect to a handheld, PM me. I bought a pack of 4 from DigiKey
    (their p/n 83...

  • Posted in thread: A& Mag Switch Overhaul on 04-22-2018 at 06:14 PM
    Bob - I agree that toggle switches are probably better, but that's OK, we can switch the P
    leads anyway at the magneto................:)

  • Posted in thread: Stromberg A-S3A1 issue on 04-17-2018 at 08:14 PM
    Do you always have the necessary fuel head for the Stromberg carb? See the FAA TCDS note 2 for
    a Continental C-85.

  • Posted in thread: Fuel lines on 04-12-2018 at 04:01 PM
    Does every J-4 experience low fuel flow in flight with C-85?At least I suspect all those that
    don't have wing tanks.