BMP's Recent Activity

  1. BMP liked Rumars's post in the thread Skin on frame scantlings.

    Increasing the skin thickness improves impermeability and skin stiffness. Paper because it was cheaper then canvas and made a more rigid...

    Jun 27, 2025 at 3:11 AM
  2. BMP liked gonzo's post in the thread Skin on frame scantlings.

    I think that cow hides soaked in water for long periods of time are likely to produce mold. Also, the tanning process uses toxic...

    Jun 27, 2025 at 3:11 AM
  3. BMP replied to the thread Best resource for learning to calculate scantlings.

    What would happen if you apply one layer of the skin on the diagonal? Not leather but thick ballistic nylon or polyester. Would it act...

    Jun 26, 2025 at 8:14 PM
  4. BMP replied to the thread Best resource for learning to calculate scantlings.

    Is there an extremely rough rule of thumb about scaling scantlings ie.: A similar boat that is 3/4 the size of the one I want to build...

    Jun 26, 2025 at 12:20 PM
  5. BMP replied to the thread Best resource for learning to calculate scantlings.

    Great post. Thanks

    Jun 26, 2025 at 12:04 PM
  6. BMP liked gonzo's post in the thread Best resource for learning to calculate scantlings.

    There are no books specifically on what you are asking. However, you can start with first principles of physics and engineering. To...

    Jun 26, 2025 at 10:27 AM
  7. BMP liked jehardiman's post in the thread Best resource for learning to calculate scantlings.

    So I understand you are talking literal "skin" on frame, not tortured ply. So like two umiaks side-by side. And really, pressure...

    Jun 26, 2025 at 10:26 AM
  8. BMP liked jehardiman's post in the thread Best resource for learning to calculate scantlings.

    The problem with skin-on-frame is that all of the Primary loads have to be carried through the longitudinals (or space frame) rather...

    Jun 26, 2025 at 10:26 AM
  9. BMP replied to the thread Best resource for learning to calculate scantlings.

    That makes total sense. Thanks Off to research plywood :)

    Jun 25, 2025 at 9:05 PM
  10. BMP replied to the thread Best resource for learning to calculate scantlings.

    Actually, thinking about it, there is probably a practical limit for fabric skinned boat, where the cost of the extremely heavy/...

    Jun 25, 2025 at 7:41 PM
  11. BMP replied to the thread Best resource for learning to calculate scantlings.

    Thanks for the replies. I'll dive into the pdf this evening. Re budget use SOR etc. it is not so much a specific design as trying to...

    Jun 25, 2025 at 7:32 PM
  12. BMP posted a new thread.

    Best resource for learning to calculate scantlings

    What books would you recommend for learning to calculate scantlings for a new design. More engineering and less this is what we've...

    Forum: Boat Design

    Jun 25, 2025 at 5:21 PM