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Thread: getting red airspeed limit to show on round dial indicator

  1. #1
    Junior Member
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    Mar 2010
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    Sugar Grove, IL
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    getting red airspeed limit to show on round dial indicator

    I've attached a couple of photos of the airspeed page and the indicator. Let me first clarify that after taking
    these shots I read on page 84 of the manual that the MAX indication should be set to 240Kts. I went back in
    and did that and saved the data.

    I'm having trouble getting a red airspeed line or even small red arc to appear on the indicator. I'm sure it's
    operator error on my part, but I would appreciate some help.

    Thanks,
    JohnName:  004.jpg
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Size:  51.2 KBName:  005.jpg
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Size:  70.0 KB

  2. #2
    What version of software are you running?
    Rob Hickman
    Advanced Flight Systems Inc.

  3. #3
    Junior Member
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    reply to : getting red airspeed limit to show on round dial indicator

    Dear Rob,

    My software version is 7.3.7-MV15 ( Jul 20, 2010)

    Firmware version is 1.6.6

    John

  4. #4
    With the old AF-3500 non "S" CPU the largest number that works with the Analog gauge is 205 kts.
    Rob Hickman
    Advanced Flight Systems Inc.

  5. #5
    Why are you trying to set the Vne for a RV-7 at 220 kts IAS?

    Van's airspeed gauges are printed Vne = 180 kts

    Don't forget that Vne and aircraft flutter speeds are actually TAS not IAS!!
    Rob Hickman
    Advanced Flight Systems Inc.

  6. #6
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    getting red airspeed limit to show on round dial indicator

    Rob,

    I was just trying to get any value set to see if I could get a red line.
    Didn't know there was a limit of 205 on the analog gauges. Is that in print somewhere?

    I posted a question a few weeks ago about setting the hobbs and tach and would never had
    figured that one out unless this forum existed. I know this system is old now, but its all new
    to me. I would bet the newer system is easier to set up, but I'm just trying to finish this airplane
    without spending too much more money.

    John

  7. #7
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    getting red airspeed limit to show on round dial indicator

    Name:  051.jpg
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    It's the little victories!! Thanks, got the red line up there. I needed that for the FAA inspector and first flight.
    Now I can go in and set the exact numbers. I was just "playing" with the system to see if I could get the arcs to work.
    On to the next item.
    Thanks,
    John

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