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  1. G

    Tractor engine, twin boom...just because?

    Too bad Cessna didn't follow through with the XMC
  2. G

    Flight review ramp check?

    Received my hard copy - 16 months after the temp was issued. Completely forgot about it until the fancy card arrived!
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    Pilot emergency parachute survey

    Installed a ballistic chute (Galaxy GRS). No need to unbuckle and clear the aircraft, opens in less than 5 seconds, no concern about 'frozen' passengers, airframe affords some protection on landing/impact, weight equivalent to 2 regular chutes.
  4. G

    Full wingspan spar, any reason not to?

    I too built a 20' one-piece wing. While you may save some weight, it becomes much more cumbersome to work with and around. At that size and weight, you can't ask the wife or kids to help you move it, gotta ask the neighbors. You can't 'stack' the pieces, so it occupies a lot of floor space by...
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    Carbon Fiber Tailwheel Stinger?

    Thank you for the input. This is a one-off design, no 'community' other than here. Material is 7075 T651, static load 59#. Very little difference in the pic on the ground than with the load off. No signs of any flex in the mounting area, only the trailing part. Because of the angle, now...
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    Carbon Fiber Tailwheel Stinger?

    My custom 7075 Al tailwheel stinger (7/8 rod tapering to 5/8 to fit ACS tailwheel) is taking on a permanent bend; looking for an alternative (this is my main question). As an aside, wondering why we don't see carbon fiber stingers? Thank you.
  7. G

    T-88 over System Three Clear Coat?

    Clear Coat is basically thinned T-88; fully compatible in my experience, just roughen the surface. Used CC exclusively (instead of a 'resin') for making fiberglass layups. Takes a little longer to fully harden, but very easy to work with.
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    T-88 Epoxy Failure

    Throughout my build, everything was sanded, both for cleanliness and eliminating slivers. Afterwards I would steel brush any surfaces to be glued, to remove any dust from the wood fibers. T-88 was always eye-balled, often using the small plastic medicinal measuring cups which are well marked...
  9. G

    Scarfing 1mm birch plywood

    Had to cut over 50' of scarfs for the wing skins alone (.0625"; 1.5mm), so I made a power tool set at 12:1 to rough it out, then refined it by hand with a setup like TiPi. Steel brush the joints to remove dust before gluing. Let the glue (T-88 in my case) soak in for 15 min and apply more if...
  10. G

    I-beam spar question

    Thank you. Yes, entire design. #1 goal - something different! 5400 hrs over a 15 yr period, not to mention countless hrs just staring at it wondering, 'How am I going to do this?'. Got help for the stress analysis and general design norms before construction. Borrowed ideas including Fisher...
  11. G

    I-beam spar question

    TJTX, Just finished my own-design all wood airplane. Signed off but hasn't flown yet, so take any advice with a grain of salt! Happy to help with techniques, things learned. GSport
  12. G

    Parts For Sale Firewall for RV-6/6A, 7/7A, 9/9A

    Untouched, factory RV-6/7/9 stainless steel firewall. $50 + shipping from CO, 80919 (Background: used the cowl for a one-off design, but made my own firewall, didn't need hole in center or flanges) [email protected]
  13. G

    Encouragement and product plugs for those wanting to paint at home

    My own design. Goal: something different. 2 place, UL Power 350iS, Airmaster electric prop, all-flying tail, full-span flaperons capable of reflex, GRS chute. Firewall 'just happens' to match an RV-6 (did not want to do THAT much glass work), and windshield is a cut-down RV-14 canopy. Truly...
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    Encouragement and product plugs for those wanting to paint at home

    Successfully doing fabric and painting in the basement which is open to the rest of the house (high-risk environment!). Using Stewart Systems for glue, fill and primer - hardly any odor for any of those (no topcoat yet). Using Eastwood QST 30/60 scroll compressor - very quiet, the claims of...
  15. G

    Yeat Another Twin Boom Pusher the General Aircraft G.A.L. 33 Cagnet

    Too bad Cessna didn't pursue this further.
  16. G

    Is wearing a personal chute with a bail-out system acceptably safe compared to an airframe chute?

    I haven't seen anyone mention the ability of an inexperienced passenger trying to exit a disabled aircraft. This is one of the main reasons I went with a whole-plane chute (Galaxy GRS). After watching many videos of ballistic chutes actually being deployed, there were some where it was obvious...
  17. G

    tedium Part 3: the "stabilator"

    Welcome to the club!
  18. G

    GPS and ELT Antennas

    Thank you! (second part of the question) can the comm antenna also serve as the ELT antenna?
  19. G

    GPS and ELT Antennas

    Can the same WAAS GPS receiver serve as the GPS input to an ELT which has a 'GPS Interface', using a coax signal splitter? (I'm assuming it uses coax for that connection) Since an ELT is "never" used, can it's signal be routed thru the comm antenna, again using a splitter - rather than carrying...
  20. G

    Meathods for scarf joints in ply

    Here's what I made, inspired from an old EAA publication. (all MDF) Mount the drill at the desired angle (e.g. 12:1) with a threaded rod large enough to support a 2" diameter drum. A small steel tube "bearing" supports the other end. The outer fence is adjustable to allow for a deeper cut...
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