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  1. Ollie Krause

    Flight Club - Ultralight Build Log

    Thanks for the generous offer but we're in the San Francisco Bay Area 😆
  2. Ollie Krause

    Flight Club - Ultralight Build Log

    He only mentioned one size that he said slides over a 1" tube. I'd be concerned that larger sizes would weigh too much to be practical for aileron or other large hinges.
  3. Ollie Krause

    Flight Club - Ultralight Build Log

    I just called Robert from Airdrome and offered to sell us some extruded hinges for $18/piece +$14 S&H. I didn't get to talk to him for very long but he seemed like a really nice guy and I think $18 is a fair price (We'll be using 4 hinges total). While I really like his hinges, I don't like that...
  4. Ollie Krause

    Flight Club - Ultralight Build Log

    Sorry, could you send a screenshot of the exact beam you're referring to? I couldn't find a brown beam so it's probably just my computer's crappy display and low res screenshots that are messing things up. If it's easier, you can view/copy/download the full 3D model from our public Onshape...
  5. Ollie Krause

    Flight Club - Ultralight Build Log

    Do you have a photo/drawing/link of these extrusions? I wasn't able to find them on Airdrome's website... Thanks for all the great feedback and discussion, everyone!
  6. Ollie Krause

    Flight Club - Ultralight Build Log

    Yep yep I'll let our physics team know. They've already done some calculations to determine the tail size but we'll go ahead and compare it to some existing ultralights to see where we stand. If needed, we'll scale them up.
  7. Ollie Krause

    Flight Club - Ultralight Build Log

    I'm not quite sure I understand the design you're describing. Do you have any examples you could refer us to (model or full size)?
  8. Ollie Krause

    Flight Club - Ultralight Build Log

    Thanks for the insightful advice! We totally didn't take this into consideration. Upon closer inspection, one of our textbooks actually has an entire section on this so I'll go ahead and study that to determine the exact amount of rudder that should be below the horizontal stabilizer.
  9. Ollie Krause

    Flight Club - Ultralight Build Log

    On behalf of Flight Club's Design and Physics teams, here's a quick update on our ultralight project: Over the past two weeks, we've been making slow but steady progress on the fuselage truss design. Most significantly, we have solutions to every major gusset problem including the super...
  10. Ollie Krause

    Flight Club - Ultralight Build Log

    Sorry for my late reply (I must have missed the notifications on this thread somehow). We are currently planning on using a torque tube to hinge our ailerons and some L shaped pieces of sheet metal to hinge our elevator and rudder. We were cautioned that riveting anything to a circular beam...
  11. Ollie Krause

    Hardware & Material Suppliers

    So I was doing some research about the difference between AN (Airforce Navy) and NAS (National Aerospace Standards) bolts and I wanted to get y'all's informed opinion on them. Is it true that AN is an old standard and NAS is more common nowadays? If I understand correctly, the AN standard was...
  12. Ollie Krause

    Aluminum Tube & Gusset Airbike / Legal Eagle / Parasol Thread

    Thanks for the advice! We totally didn't take the door placement into consideration. I'll go ahead and mock up a Skylite style access hole. Yeah Onshape is definitely the younger sibling to Solidworks and lacks some critical features. I'm not sure what you're using Solidworks for (commercial...
  13. Ollie Krause

    Aluminum Tube & Gusset Airbike / Legal Eagle / Parasol Thread

    Sorry do you mean loads for the fuselage, wing, or both? We've been mostly designing things using a conceptual approach and basing things off similar aircraft so far and we're still in the process of mastering all the calculations that go into verifying the safety of the design. We were worried...
  14. Ollie Krause

    Aluminum Tube & Gusset Airbike / Legal Eagle / Parasol Thread

    We're currently planning on using 1"x0.035" 6061 T6 and hope to be able to verify it's strength with FEA before we begin construction. Our physics team is currently super busy with optimizing the weight and drag of our wing support struts and doing some CFD simulations on our wing but the...
  15. Ollie Krause

    Aluminum Tube & Gusset Airbike / Legal Eagle / Parasol Thread

    Oh that make sense. I totally didn't even think about how I would do the actual bending so that's good to know.
  16. Ollie Krause

    Aluminum Tube & Gusset Airbike / Legal Eagle / Parasol Thread

    I'm not quite sure what you mean by the spike method... Do you have some photos of an example? Thanks for all of the help!
  17. Ollie Krause

    Aluminum Tube & Gusset Airbike / Legal Eagle / Parasol Thread

    Wouldn't the tubes intersect then? Would you be able to do a 20 second sketch? I think I'm misunderstanding.
  18. Ollie Krause

    Aluminum Tube & Gusset Airbike / Legal Eagle / Parasol Thread

    Great! I'm super glad to hear this has been done before. Do you have some examples you could direct us to? Thanks!
  19. Ollie Krause

    Aluminum Tube & Gusset Airbike / Legal Eagle / Parasol Thread

    Yeah I really like the 3D printed fixture idea. Ideally, I'd like to be able to CAD the gusset before beginning construction to reduce the chance of any surprises but making up the geometry by hand is also a viable option. Maybe I purchase some tubes and create a mock up of just this joint...
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