Weight loss when upgrading Avionics. Hard Data.

Discussion in 'Avionics and Upgrades' started by Ignacio Allende, Jun 10, 2019.

  1. Ignacio Allende

    Ignacio Allende Pre-Flight

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    What have been your experiences weightwise? I can plan for equipment exchange figures, but wires, bundles, plastics, antennas and such are unknown to me in the final count.
     
  2. luvflyin

    luvflyin Final Approach

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    About 10 pounds. I could barely afford food after buying new avionics
     
  3. steingar

    steingar Taxi to Parking

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    If you're really looking for your aircraft to shed pounds the easiest place for it to loose weight is to loose it from the guy flying it.
     
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  4. chemgeek

    chemgeek Cleared for Takeoff

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    Depends on now long it's been since the last clean out. My plane was filled with abandoned gear and wires from many previous installs. I started fresh when I ditched the LORAN, ADF, and a dying NAV12 and put in a modern audio panel and GNS430. Between that and a starter replacement my plane lost about 15-20 pounds. There were two large boxes of unneeded wiring and antennas. Scary. Behind the panel is soooooo pristine now.
     
  5. Mtns2Skies

    Mtns2Skies Super Moderator Management Council Member PoA Supporter

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    I lost about 22lbs out of my plane with a new radio stack and illegal autopilot removal, certainly not insignificant.

    My vac system is next on the chopping block for weight gains.
     
  6. chemgeek

    chemgeek Cleared for Takeoff

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    According to my installer, two G5s and removing the vac system is about 18 lb. Not earth shattering, but welcome. Getting rid of the graphite vane vac pump is a big bonus.
     
  7. Landing Fees

    Landing Fees Pre-takeoff checklist

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    My R182 has to stay tied down on the hangar she is so light after AP and vacuum removal. All told about 20lbs. If we remove any more we will have to get a balloon rating
     
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  8. bnt83

    bnt83 Final Approach PoA Supporter

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    Non-autopilot gyros don't weight much. Old HSI systems are heavier.

    upload_2019-6-11_8-6-47.png
     
  9. asicer

    asicer En-Route

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    I suppose the inverse of that is that autopilot gyros weigh a ton? How big a difference is it?
     
  10. bnt83

    bnt83 Final Approach PoA Supporter

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  11. NordicDave

    NordicDave Cleared for Takeoff

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    Ignacio Allende likes this.
  12. Tim86

    Tim86 Filing Flight Plan

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    I just got my plane back last week. 1969 C172K. I got rid of the ADF, DME and an ancient Narco transponder. Added a GMA345 audio panel and a Stratus ESGi transponder. The useful load went from 900 to 908. Not bad for a Skyhawk. The original WB with the plane had it at 864. Apparently it's been dropping pieces for 50 years.
     
  13. Jesse Saint

    Jesse Saint Pre-takeoff checklist

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    I just updated a Bonanza panel with a PAR200, Avidyne IFD540, Lynx NGT9000 and a full Dynon suite including 3-servo auto pilot. Dropped 35 lbs.
     
  14. Craig

    Craig Line Up and Wait

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    Took a bunch of stuff out of an A-26 I was working on...something like 190 pounds just for the radio compass stuff. That included the boxes, mounts, racks, drive cables, antennas and a refrigerator sized box of wire.
     
  15. Ignacio Allende

    Ignacio Allende Pre-Flight

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    Yup that seems to match a very old w/b & equip inventory made to my 206.

    Humble 8 pounds, but hey that's a backpack. I'll post a new topic about some thoughts you just mentioned...

    Now that's interesting. What did you drop/update?

    That's a whopping amount! are we talking about a loop antenna?
     
  16. Craig

    Craig Line Up and Wait

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    Dual SCR-269's, with dual indicators and control boxes.
     
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  17. arnoha

    arnoha Cleared for Takeoff

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    Mine lost about 20 lbs.
     
  18. Ignacio Allende

    Ignacio Allende Pre-Flight

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    What did you change?
     
  19. arnoha

    arnoha Cleared for Takeoff

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    Ditched the vacuum system (double pump system), the AI, the DG, a KLN94, a KMD550, and a KT76C.

    In went dual G5s, a GTX 345, and a GTN 750, along with a USB6A.
     
  20. asicer

    asicer En-Route

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    Did you keep the cooling fan/ducts/etc?
     
  21. arnoha

    arnoha Cleared for Takeoff

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    No, the GTN-750 has internal cooling fans and the other equipment doesn't need forced cooling.
     
  22. Ignacio Allende

    Ignacio Allende Pre-Flight

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    That's a setup change very similar to what I'm planning
     
  23. flyingcheesehead

    flyingcheesehead Touchdown! Greaser!

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    Ditched old GPS and a Nav/Com, DME, ADF, intercom, audio panel, transponder, GPS annunciator/CDI switch unit, "color moving map"/eRMI, and added GTN 750, GMA 350c, GTX 345, and FlightStream 510. Gained 25 pounds of payload!
     
  24. Mtns2Skies

    Mtns2Skies Super Moderator Management Council Member PoA Supporter

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    Ditched Narco radio stack, illegally installed piper autopilot, two CDI's, one with DME and gained 23lbs.

    Vacuum system is next on the chopping block.