Mulkari's Recent Activity

  1. Mulkari replied to the thread Solar thermal propulsion..

    Since Stirling (or steam) engines doesn't care what the source of heat is a wood furnace would be far more practical. Much smaller and...

    Jan 14, 2025 at 12:00 PM

  2. Mulkari replied to the thread Solar thermal propulsion..

    An average size cruising sailboat say somewhere around 13 - 15 m generally have around 50 hp diesel. Maybe you could get away with 10 hp...

    Jan 14, 2025 at 11:16 AM

  3. Mulkari replied to the thread Designing a fast open deck catamaran.

    I most likely will use epoxy plywood, it is just so much more friendly to low tech DIY project. Aluminium would make basic structure...

    Jan 14, 2025 at 7:22 AM

  4. Mulkari replied to the thread Solar thermal propulsion..

    Found on Youtube pretty cool video about 25 kw solar Stirling system from 40 years ago. [MEDIA] Claimed efficiency 24% which is...

    Jan 14, 2025 at 4:33 AM

  5. Mulkari replied to the thread Designing a fast open deck catamaran.

    Interesting, does it mean nearly every performance cruising cat comes with severely undersized boards even Gunboats and Dazcats that...

    Jan 14, 2025 at 3:42 AM

  6. Mulkari liked waterbear's post in the thread Designing a fast open deck catamaran.

    Why would you look to Mumby as an example? A guy with no credentials and no website designing and building catamarans in a Philippine...

    Screenshot_20250112-224453.png Screenshot_20250112-083356.png Screenshot_20250112-081754.png Jan 14, 2025 at 2:58 AM

  7. Mulkari replied to the thread Solar thermal propulsion..

    I still wonder how practical it would be. I looked few Stirling engine powered boat videos and they look like quite low power, maybe...

    Jan 12, 2025 at 4:23 PM

  8. Mulkari replied to the thread Solar thermal propulsion..

    I tried to search the internet and couldn't find any working examples of solar thermal boat. While a proof of concept model definitely...

    Jan 12, 2025 at 8:54 AM

  9. Mulkari replied to the thread Designing a fast open deck catamaran.

    Shallow water capability definitely is important. My design currently have draft of 0.55m at 8.8 ton displacement. I suppose with boards...

    Jan 12, 2025 at 4:04 AM

  10. Mulkari replied to the thread Solar thermal propulsion..

    There are working examples of solar thermal powerplants out there so concept definately works, but I think there would be a ton of...

    Jan 11, 2025 at 1:18 PM

  11. Mulkari replied to the thread Designing a fast open deck catamaran.

    Yes the board boxes would be offset towards outside of hulls. I looked other performance cat Mumby 48 and it has only 1.8 m draft with...

    Jan 11, 2025 at 1:04 PM

  12. Mulkari attached a file to the thread Designing a fast open deck catamaran.

    That's the plan, put the board box as close to the chine as possible, and use the space behind for fresh water tank and possibly waste...

    Interrior.jpg Jan 10, 2025 at 3:14 PM

  13. Mulkari replied to the thread Designing a fast open deck catamaran.

    I have sailed my 9.5 m cat against minikeel cats and I go upwind much better. My design goal was not to equal daggerboard boat, but to...

    Jan 10, 2025 at 9:37 AM

  14. Mulkari replied to the thread Designing a fast open deck catamaran.

    That would definitely go fast in calm water. However unless they have some sort of super long legs in rough water all that extra...

    Jan 10, 2025 at 2:25 AM

  15. Mulkari replied to the thread Designing a fast open deck catamaran.

    With all the stuff for about month long cruise and 3 - 5 people onboard I estimate total weight is about 1.8 - 2 tons. Empty boat with...

    Jan 9, 2025 at 1:34 PM
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