Rumars's Recent Activity

  1. Rumars replied to the thread lightest sailing boat concept, affordable diy blue water multihull.

    In words you can actually understand: if they don't do any work they are not needed. Of course I was mocking you, as you draw them they...

    Oct 19, 2020 at 9:55 PM
  2. Rumars replied to the thread lightest sailing boat concept, affordable diy blue water multihull.

    I find the rubber and rope reinforced akas that don't support any weight superfluous, a waste of high-end precious resources.

    Oct 19, 2020 at 9:11 PM
  3. Rumars replied to the thread Bimini made from PVC pipes + Fiberglass/polyester resin.

    If you want fiberglass tube make some, but PVC would only be useful as a mold. Leaving PVC tubes in does not make sense, they only make...

    Oct 19, 2020 at 8:43 PM
  4. Rumars replied to the thread How would you start a new cruising cat company?.

    Steve, nobody is ridiculing you, it's just that some of your assertions are a little bit naive. I don't know what you invented, but IP...

    Oct 18, 2020 at 6:24 PM
  5. Rumars replied to the thread Advice on repairing or abandoning old sailboat.

    Aluminium bronze or titanium would be my choices for a new pin.

    Oct 18, 2020 at 12:30 PM
  6. Rumars replied to the thread How would you start a new cruising cat company?.

    Please remember that the "performance" of a Lagoon or FP is not in sailing ability only, it's space and payload. You want to compare...

    Oct 18, 2020 at 12:26 PM
  7. Rumars replied to the thread Advice on repairing or abandoning old sailboat.

    You need to make a new centerboard, not repairing that one. How is the pivot pin and its stuffing box?

    Oct 18, 2020 at 12:15 PM
  8. Rumars liked Blueknarr's post in the thread Composite Rowboat.

    Any 6 10 inch piece of material that can be folded into a vice is NOT still enough for a single skin boat!!!

    Oct 18, 2020 at 12:10 PM
  9. Rumars replied to the thread Composite Rowboat.

    I'll save you some trouble, polyurea (wich LineX is) has a density of 1000-1250kg/cum (depending on the exact formulation). One square...

    Oct 18, 2020 at 12:10 PM
  10. Rumars replied to the thread Weld two sections of aluminum mast?.

    May I ask why riveting is not desired? It is after all the industry standard in splicing masts, plenty of production boats have them....

    Oct 17, 2020 at 10:21 PM
  11. Rumars replied to the thread Composite Rowboat.

    Forget the LineX, it is just added weight. While it can be a waterproof and impact proof layer, it does nothing to stiffen a panel. You...

    Oct 17, 2020 at 10:02 PM
  12. Rumars liked Alik's post in the thread How would you start a new cruising cat company?.

    How one can claim that paper design is better than boats that already exist?? I saw many designs with big claims, but once built they...

    Oct 17, 2020 at 9:13 PM
  13. Rumars liked bajansailor's post in the thread Composite Rowboat.

    The thing to do here is to do a careful and thorough weight estimate first before he even starts building - it should be possible to get...

    Oct 17, 2020 at 6:45 PM
  14. Rumars replied to the thread How would you start a new cruising cat company?.

    The simple way is to propose the design to builders and hope someone wants it. Then cash in on the license fees and relax. That actually...

    Oct 17, 2020 at 6:43 PM
  15. Rumars replied to the thread Advice on repairing or abandoning old sailboat.

    Drop the board and use muriatic acid to get rid of the barnacles. The hole you are talking about could be the centerboard pivot removal...

    Oct 17, 2020 at 6:21 PM