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aj_richo

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  • Aircraft
    Sonex
  • Location
    Strathalbyn SA
  • Country
    Australia

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  1. Swift12

    HI AJ...Im building a vans RV 7. Im doing the same as you did. Im spraying wattyl super etch as I dont want chromates any where near me. i am using pre coat too....I know they say to use two pack epoxy over pre coat...I find after the primer is dry its quite durable. have you had any corrosion issues at all with this method? cheers Glenn

    1. aj_richo

      aj_richo

      Hi Swifty,

       

      No corrosion issues that I can detect internal to the structure, I started building in 2006, flying since 2014. Some of the exposed parts like flap wells have small white spots here and there but I believer this is the zinc in the superetch reacting to moisture. Its acting like a sacrificial anode. Sounds ominous but a coat of clear lacquer over the top would stop it. Been too busy flying too worry about it.

      I believe 2043-T3 is the material your building the RV out of? If the pure aluminium coating is intact then I can't see you having any issues long term with this approach as the pure alloy is more corrosion resistant than 6061 to begin with.

       

      Cheers

      Tony

    2. Swift12

      Swift12

      Thanks Tony. I appreciate the reply. Yes most of it is alclad. The 6061 parts have been alodined and done with two pack epoxy by a local Aircraft maintenance facility. Sounds like I’m on the right track. It’s nice to spray. It dries quite thin. Cheers Glenn

  2. aj_richo
  3. aj_richo
    I used a product called prekote to clean and prepare the 6061 alloy my Sonex is built with. I then used Wattyl etch primer over the top. It was a lot of work and the Wattyl etch primer may not have been the best product to use as its a little soft and should actually be top coated. But I felt it was a lot better for my health than using products like alodine and two pack with isoncyanates
  4. aj_richo
    http://www.protec.com.au/images/uploads/tech_data_sheets/AP-4441_PROTEC_ETCH_PRIMER_Protec_Primers_29-11-16.pdf Note the hardener contains isocyanate, wont meet your requirements
  5. aj_richo
    Yep Fairyland.. I built this 1984-87, from memory it was around $4500-5000 in 80's dollars Last flight before retiring it was in 2005
  6. aj_richo
    I know we're completely off topic.. but re-contents of Bex powders: Bex Powders | School of Medical Sciences
  7. aj_richo
    How hot.. damn hot! I use a piece of static cling film cut to size and placed directly overhead. Hasn't fallen off yet in 3 years. Along with mandatory hat and sunscreen provides a bit of relief from direct sun. Streetwize Static Cling 1200x450mm Black Winter time you get enough solar radiation to keep warm with a light jacket.. until the sun goes out then its fricken cold.. lol
  8. aj_richo
    Hi Ralf, Flying Fuels Parafield Flying Fuels, aviation fuel, avgas, jet a-1, shell water detector, SWD Cheers Tony
  9. aj_richo
    Here is a video link of the aircraft prior to the accident and just after - taken by boaties nearby Video shows Roy Halladay’s final moments before plane crash
  10. aj_richo
    I've had my Dynon D180 go into a reboot loop at inoportune times, I have a mechanical ASI as backup. Have flown approach and landing purely on the ASI, also takeoffs.. no drama except if heading off on a cross country. A few threats to replace it with an MGL and it comes good after a few minutes.
  11. aj_richo
    My hangar partner recently recovered his HyperLight SNS-8 biplane with Oratex, looks pretty good.
  12. aj_richo
    GroundHog day.. again
  13. aj_richo
    This has come a few times in the past, someone else put me on to one of these: I recommend a Vority Dual USB car charger from Amazon. 3.1A and 1A outlets. It will charge my mini iPad and iphone together and most importantly, NO radio interference on the MGL v6 when charging. Oooh bugger - currently unavailable Amazon.com: Vority Dual USB Car Charger 3.1Amp 15.5W (White) 1.0+2.1A Universal Ports, Smart Power Supply For iPad Mini /4/3/2, iPhone 5S/5C/5/4S/4/3, Android / Blackberry / Windows Cell Phones & Tablets, Portable Cigarette Lighter Adaptor, Mobile Travel Charging Station 12V Input - 5V Output. Fast & Smart Duo31CC: Cell Phones & Accessories
  14. aj_richo
    Same guy turbocharged and fuel injected a Jab 2200
  15. aj_richo
    Kathryns Report on the accident Kathryn's Report: Icon A5, N184BA: Fatal accident occurred May 08, 2017 in Napa County, California
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