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    Light weight diesel auto conversion

    Gaz'Aile project use 8 valve Ford-PSA DV6C. With mecanical injection, it produce around 100HP for 107Kg with psru. In the GM LE2 thread someone mentioned a 1.6L biturbo 160HP from GM you can find in opel astra here in europe. He says it weights around 125kg. Toss the bi-turbo out for one big...
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    Looking for info on controlling airfoil shape in moldless composite wing

    From what i understand: 1) you glass the top first 2) with only the top you can still conform the foam to the rib. Create a corner on the rib to support it. 3) then glass the bottom and glue it to the ribs corner. Got it right? I dont understand how you do it for the other side of the wing ;)
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    Flying wing as cheap and simple option for basic fun flying.

    You realize a few french guys hang around? ;) I can help with some translation. Love the pelican, a more modern glider-like fuselage and electric would kick ass.
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    Flying wing as cheap and simple option for basic fun flying.

    That thing is so awesome i had to say it. There. Please do something with it! Edit: i can't read the picture with the graphics, would love to read about the thinking behind the tractor engine!
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    Flying wing as cheap and simple option for basic fun flying.

    If you look at how a panel is made, a lot of the weight is the plastic backing of the panel, the actual sensitive stuff is very thin. I always wondered 2 things: if a panel can actually replace the fabric/skin of the wing, offsetting some the weight, or if somehow you could order that thin...
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    99lb/45kg primary glider

    The Klingberg wing mark 2 will hopefuly meet your weight criteria : Klingberg Wing MkII
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    Forum made EFI?

    There was talks for modern diesel support on the rusefi forum, is it something you could do? I have a market for you :)
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    Scrappy’s Landing Gear Wings - Yay or Nay?

    You mean, like when loosing the engine in imc in his racer? Posted by mark but i think it's mike. Personally i like his videos and enthousiasm. I'm quite "young" (almost 40 ) and when i talk to people about building airplanes, well, i learned to just keep it to myself, and its quite lonely...
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    Lowest cost AHRS EFIS/6 pack replacement?

    If you are DIY, there is an EFIS/EMS project on the gaz'aile forums, based on a very bright LCD (150$) The i/o board with an teensy is in the work for interfacing with engine sensors etc...
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    Electric Powered - High Performance Design

    In a project like this, you need a structural battery idealy? I wonder what kind of strength you could get by using all those tiny tubes of aluminium as some kind of honeycomb structure, containing electrons :) You would need to master spot welding aluminium. I also imagine you should choose an...
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    Pod & Boom ; the folding prop integrated Around the boom

    There is an european autogyre with this setup. Edit: The niki lightning autogyro? No folding prop though.
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    Single-seat ultralight puddlejumper: the "Carbonmax"

    "Spar less", that was the key word I was looking for! Here the thread with picture from Orion: "Spar-less" wing construction Edit: got any pictures of the Diana wing structure?? couldn't find anything on the interwebz
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    Single-seat ultralight puddlejumper: the "Carbonmax"

    That sounds like what Orion tried (can't find the post with the pictures) Some relevant post: Calculating stresses on stressed skin corrugated spar wing Autoreply considered it in his awesome post: Why expensive composites can be cheaper; an in-depth comparison of weights and cost. (picture link...
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    Aluminum Tube & Gusset Airbike / Legal Eagle / Parasol Thread

    I don't know anything about cast aluminium strength, but seeing guys on the interwebz casting with 3D printed pattern and "lost PLA" technique, you wonder what's possible nowadays? Not easy at all, but you can't stop wondering...
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    What do you think about "e-soaring"?

    Stop with the clickbait! title: "Samsung announce new battery...", first line: "Samsung presented a study..." Well, like I said before, now is the good time to develop an electric propulsion for your aircraft, by the time you will be done with current batteries (2-3 years...), the new ones will...
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    How I make steel fittings

    Yes that too bad, your video should be mandatory for under 18 ;) ! You know you can just deactivate the comments in Youtube studio? Go to the video > details > More options > Comments and Rating > Comments Visibility > Desactivate all comments. (it will lower your video rating though, it's an...
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    How I make steel fittings

    Awesome idea, definitely do it! You could send a story to and get nice coverage of people wanting something like it, they even have a store if you want to make some bucks out of it ;)
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    Cheap ultralight wing coverings

    Did you see the dyneema fabric I mentioned ? Can be as low as 0.5 oz/yd, ~30$/yd. Why it wouldn't work for an ultralight (I don't know if it shrink...) ? Looks tough.
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    Exian's composite planes

    Well, they are a camshaft manufacturer for european brands, and started their aero activities by making a special camshaft for aero VW engines, so it's at least believable that they make a bit more HP... the "continuous" is probably more debatable ;)
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    Cheap ultralight wing coverings

    What about the ripstop stuff for tents, kitesurf, and others light things?? I was wandering on the internet and found that guy making ultralight foldable kayak with composite dyneema fabric: CubenMaker - Making outdoor gear with lightweight Cuben Fiber fabric The thing looks light and strong...