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  1. jetblackaircraft

    Exploring a Faster High wing Light Sport legal homebuilt

    So I haven't read through this entire thread, but I've had this design in mind as my next project after I finish my single seat low wing. I'll have to dig into my notes to find my estimated weights and performance, but after a brief look at your numbers, ehamilton, it looks pretty close.
  2. jetblackaircraft

    Jet Black Aircraft - JB441 Single Place Aluminum sport plane

    Agreed. What I'm finding as I get this thing put together is that it is far from optimized. I'm seeing a weight penalty building up due to the over-simplified structure. BUT, that's okay. I've accounted for a significant weight penalty in my design, so it's actually turning out about where I...
  3. jetblackaircraft

    Jet Black Aircraft - JB441 Single Place Aluminum sport plane

    Absolutely
  4. jetblackaircraft

    How would you lower the build time?

    I agree, but disagree.... the 51% rule is not based on TIME it is based on a clearly specified set of steps or tasks. So, a simple evaluation of which tasks take the least time and giving those to the builder while having the factory finish the steps that require the most time would be one...
  5. jetblackaircraft

    JB441 Aluminum Single Place

    Here are some CAD models of the empenage sub-assemblies. Hoping to be able to have pics of these completed in aluminum soon.
  6. jetblackaircraft

    Jet Black Aircraft - JB441 Single Place Aluminum sport plane

    Figured now would be a good time to post some screenshots from Solidworks of the vertical stabilizer, elevator, rudder, and the empenage assembly in progress. Still haven't finished the detail design of the rudder, but have the detail design done on the elevator and vertical. Hopefully, I'll...
  7. jetblackaircraft

    Jet Black Aircraft - JB441 Single Place Aluminum sport plane

    You're kind of talking along a line that I've thought about many times. I think most likely you could give the builder some credit in that scenario but maybe not 100%. This would allow the manufacturer to take on some of the assembly tasks and save the builder even more time. I didn't want to...
  8. jetblackaircraft

    Jet Black Aircraft - JB441 Single Place Aluminum sport plane

    I appreciate all of the feedback, optimistic and skeptical. I think one thing to consider with this aircraft is the simplicity. I'm going for a very simple, basic design with no frills. The part count is going to be minimal and the way it all goes together is going to be pretty straight...
  9. jetblackaircraft

    Jet Black Aircraft - JB441 Single Place Aluminum sport plane

    I'm suggesting that from start to finish a builder could build this kit in 100 hrs. If the builder wanted to alodine or prime the inside it might take longer, but I know lots of people who have built aluminum aircraft with no metal finishing internally. Even if you wanted to alodine and paint...
  10. jetblackaircraft

    Jet Black Aircraft - JB441 Single Place Aluminum sport plane

    By the way, regarding the build time numbers I am using as my goal (I mentioned in the first post that I'd like to see this airplane be built in less than 100 hours). When I put together this horizontal I took the parts as they came out of the punch press, press brake, or off of the forming...
  11. jetblackaircraft

    Jet Black Aircraft - JB441 Single Place Aluminum sport plane

    Thanks for the input! I've been looking at specs for a lot of engine choices and the Rotax 582 would make a good choice for this aircraft. It would increase the cost and weight and not insignificantly, but it would provide a much more powerful and reliable option for folks wanting to spend the...
  12. jetblackaircraft

    Jet Black Aircraft - JB441 Single Place Aluminum sport plane

    Been way too long, but finally some progress! Here are some pics of the first completed horizontal stabilizer assembly. This one lacks the hinge attach brackets for the elevator, so it will probably just be a display piece or structural test. Still pretty cool to finally get one whole...
  13. jetblackaircraft

    JB441 Aluminum Single Place

    It's been a while, but after moving my machining business to a new building and finally getting caught up and settled, I got out the parts for the horizontal stabilizer and rivetted one together. It helps that I bought a 12' press brake so that I can now bend the leading edge radius on the...
  14. jetblackaircraft

    JB441 Aluminum Single Place

    After bending the leading edge and clecoing it up I'm not super happy with the leading edge radius, so I'm going to redo that skin. Keep in mind this is just a structural test first article, so it's not perfect.
  15. jetblackaircraft

    Jet Black Aircraft - JB441 Single Place Aluminum sport plane

    Here's one side cleco'd up. I'm not happy with the way the leading edge radius ended up, so I'm probably going to redo that skin.
  16. jetblackaircraft

    Jet Black Aircraft - JB441 Single Place Aluminum sport plane

    Not much progress. Have all of the parts for a horizontal stabilizer finished except for a bend at the leading edge in the skin. Hopefully more progress soon
  17. jetblackaircraft

    JB441 Aluminum Single Place

    It's been a long time since I posted any progress. Here's a full horizontal stabilizer assembly. Pics of it completed soon.
  18. jetblackaircraft

    Jet Black Aircraft - JB441 Single Place Aluminum sport plane

    Thanks for posting the testimonial. I'd love to be able to talk to that person. It is a different model than I am looking at. It's also a common problem I've heard that they are not tuned out of the box. The cooling issues I would love to talk to the company about. I have a feeling with...
  19. jetblackaircraft

    Jet Black Aircraft - JB441 Single Place Aluminum sport plane

    It's hard to tell whether you're saying it's an expensive POS or a good deal.... Think about it this way. It's half the power of an O-200, less than half the weight, and a third of the price. 1000 hr tbo. Not a bad deal.
  20. jetblackaircraft

    Jet Black Aircraft - JB441 Single Place Aluminum sport plane

    A very wise engineering professor once told me, "don't re-invent the engine". I think the only engines that I would support would be factory new. That way someone else can pick up some of the slack if there are engine issues and the customer won't be left high and dry. I might find a very...
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