best location for mounting an NSD 360 HSI Flux dectector

Sjenn53Sjenn53
in General Discussion
installing a slaved NSD 360A HSI and looking for the best place to locate the Flux Detector? Everyone says L Wing keeping the Flux Detector away from Ferrous metal ( 18 inch radius). is this the only choice? I have a 1968 Piper Arrow.
Thanks
Steve

Comments

  • Bob HartBob Hart
    Hi sjenn53,
    NSD-360 install manuals are "illusive" on-line so here's the basic instructions from the Bendix King KCS-55A HSI for their KMT-112 flux detector.
    Simply stated, the tail is the other option vs. the wingtip. Your installer should be the source of this decision and therefore responsible for it. If your doing it yourself, then you'll need to fugure it out. This is where an installer's experience comes in. You can see, the manufacturers don't help alot!

    The KMT 112 Transmitter detects the horizontal component of the earth’s magnetic field and
    transmits them to the KI 525/525A Indicator for use as long term correction information.
    2.5.2 MOUNTING
    The KMT 112 should be located as far as possible from all sources of local magnetic disturbances
    such as engines, electrical cables, or radio equipment. A wing tip or tail section location will usually
    be satisfactory. The use of a hand held compass can be helpful in determining if the selected
    area is free of magnetic disturbance. The mounting surface should be such that when the aircraft
    is in level flight the mounting flange of the KMT 112 will be level within ± 2 degrees. The unit
    should be secured per Figure 2-4 with the three #6-32 non-magnetic screws and associated nonmagnetic
    hardware that are provided with the unit. Using the connector provided connect the wiring
    to the unit as shown in Figures 2-9 and 2-10.
    (these figures won't help you)
    Good Luck Bob Hart www.AvionixHelp.com
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