Recent content by N91CZ

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    10/23 Raptor Video

    ADSB transmits both GPS and pressure altitude. Last time I checked, only pressure altitude is used for aircraft separation. Don't know which flightaware shows.
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    10/23 Raptor Video

    My Garmin ADSB transponder doesn't start transmitting until a minimum airspeed is reached. I assume this is based on some desire to de-clutter ground movement from flying aircraft. Pressure in the cabin generally reads low as well. He needs to try a static cone.
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    10/23 Raptor Video

    That is one long take off roll.
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    Crashes in the News - Thread

    Exactly right. I evaluate each climbout for the point at which a turn back is achievable, either direct to the runway or to down wind. I know how low my abeam point can be to allow a successful landing.
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    Crashes in the News - Thread

    That is how best to get good at it and you have an engine to abort if it isn’t working out. Know your plane, it’s abilities and limitation.
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    Carbon fibre

    Perhaps not a project for everyone, but I swapped my two elevator push-rods for carbon units after someone asked if it might save weight. Indeed it did. ~50%, 2 lbs vs 4 lbs. The larger the tube, the easier it is to save on weight. The tubes are roughly 5' and 6' in length. Primary load is...
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    Building Angle of Attack Indicator

    Interesting thread. Here is an AoA probe I used for Stability and Control flight testing. 0.02 deg resolution. I didn't see any discussion of resolution and sensitivity. AoA unit are great near stall in terms of knots per degree. At approach speeds not so good unless your approach...
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    Piano Hinges for Primary Flight Controls - Pro/Con?

    Well for some reason the two links are combining to only one address. The text of the addresses is correct however. Chris
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    Piano Hinges for Primary Flight Controls - Pro/Con?

    http://www.n91cz.com/HingePlay/HingeRepair.pdf http://www.n91cz.com/HingePlay/hinges.htm Let's try this again
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    Piano Hinges for Primary Flight Controls - Pro/Con?

    http://www.n91cz.com/HingePlay/HingeRepair.pdf http://www.n91cz.com/HingePlay/hinges.htm I just stumbled across this thread. I saw a few references of the use of piano hinges on Lancairs. Implied was that they must be ok for the application. Unfortunately this is not quite the case. Stock...
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    NLF 0414(f) on a lancair

    Here is report showing the impact of reflexing the NLF-0215 on total aircraft drag. http://n91cz.com/Performance/Cruise_Flap_Report.pdf
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