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Thread: OAT Sensor

  1. #1

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    Default OAT Sensor

    Has anyone used an OAT sensor for the Garmin G3X other than the GTP-59? The GTP-59 is stupid expensive ($500) for what it
    is. I read that it's because it's also for certified aircraft which supports the high price but it's still insane.

    Victor
    Building SS7
    915iS
    Garmin G3x

  2. #2
    Senior Member Dave S's Avatar
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    Default Re: OAT Sensor

    Victor,

    That price is incredibly stupid - agreed.

    I went the old tech way - a food thermometer with the correct temp range - its little button battery is still powering the thing (although I do turn it off when not flying) - placed it through the windscreen up high like many of the old Cessnas; using the stem from the pocket holder it came with so it can be slipped in and out of the windscreen - a little acrylic reinforcing collar glued to the stem holder and all stuck to the windscreen with 3M auto trim tape. Has switchable on/off and F/C scales. And - the thing is independent of any other system so some failsafe system doesn't take it with as it fails.

    For accuracy - it is right on.

    Don't know if many can deal with the price - something like $9.56, with today's prices, probably a bit over $15 now. No endless software upgrades or updates either.

    Hi tech - low tech - appropriate tech - each has its price I guess.
    Dave S
    Kitfox 7 Trigear (Flying since 2009)
    912ULS Warp Drive

    St Paul, MN

  3. #3
    Senior Member
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    Mapleton,UT
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    Default Re: OAT Sensor

    Dave I like your thinking but the difference is the g3x needs temperature input to function correctly.
    Dustin Dickerson

    Building 7ss STI x 2
    Oratex
    29" shock monster
    EP912STI 155hp
    Garmin
    N33TF......FLYING!
    N53TF......FLYING!

  4. #4
    Senior Member 109JB's Avatar
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    Default Re: OAT Sensor

    Not really. The G3X will still function correctly without an OAT, albeit without some information available such as TAS and density altitude but the G3X will still work just fine.
    John Brannen
    Morris, IL
    Sonerai IIL (Single Seat)
    Kitfox 3/4 1050 - Rotax 582 (Back Flying and sold)
    Kitfox IV 1050 - Rotax 582 (sold)
    Kitfox IV 1200 Speedster - Rotax 912 UL (project)
    Piper Twin Comanche (Sold)
    Glasair 1 FT (Waiting to start)

  5. #5
    Senior Member Dave S's Avatar
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    Default Re: OAT Sensor

    Hope I didn't mislead anyone - I must confess my ignorance of the G3X
    Dave S
    Kitfox 7 Trigear (Flying since 2009)
    912ULS Warp Drive

    St Paul, MN

  6. #6

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    Default Re: OAT Sensor

    I think that having density altitude available is an important feature so I'll stick with the OAT tied into the G3x.
    Hopefully there is a cheaper option.

    Victor
    Building SS7
    915iS
    Garmin G3x

  7. #7
    Senior Member jiott's Avatar
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    Portland, OR
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    Default Re: OAT Sensor

    Dynon has an OAT sensor for a much more reasonable price that ties into their Skyview system. Don't know if its compatible with the Garmin G3X, but may be worth checking.
    Jim Ott
    Portland, OR
    Kitfox SS7 flying
    Rotax 912ULS

  8. #8
    Senior Member
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    Default Re: OAT Sensor

    Quote Originally Posted by 109JB View Post
    Not really. The G3X will still function correctly without an OAT, albeit without some information available such as TAS and density altitude but the G3X will still work just fine.
    I guess that depends on what you consider function correctly. Same logic, it will still function correctly without gps, albeit without some information available. Point is I would just use the garmin oat and know you are good to go.
    Dustin Dickerson

    Building 7ss STI x 2
    Oratex
    29" shock monster
    EP912STI 155hp
    Garmin
    N33TF......FLYING!
    N53TF......FLYING!

  9. #9
    Senior Member
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    KDKB (Dekalb, Illinois)
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    Default Re: OAT Sensor

    Yep, the big problem with owning anything Garmin is the depth your pockets need to be. Nice stuff, but $500
    for most likely a $2 thermistor packaged in a neat holder with some wire ...

    Jeff

  10. #10
    Senior Member
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    Default Re: OAT Sensor

    Agreed. I was going to go with mgl on our builds but decided decided I may regret it. Figured if I went with garmin I wouldn’t regret it. I have loved the garmin and no regrets but they are pricey. Not free to have your name on every piece of Avation material.
    Dustin Dickerson

    Building 7ss STI x 2
    Oratex
    29" shock monster
    EP912STI 155hp
    Garmin
    N33TF......FLYING!
    N53TF......FLYING!

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