Bismarck Turning Radius

Discussion in 'Propulsion' started by tgalx3, May 7, 2023.

  1. tgalx3

    tgalx3 Well-Known Member

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    I’m finally getting started on building my Bismarck. We battle in a smaller pond so I need the turning radius on this beast to be as tight as possible. It’s a 1/144 scale fast gun model.

    What are all the legal tricks I can do with the rudder to get as tight of turning radius as possible?
     
    Last edited: May 7, 2023
  2. Kevin P.

    Kevin P. Well-Known Member

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  3. Commodore

    Commodore Well-Known Member

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    Are you sure pot metal (zinc) is a good enough material for battleship props? I'd be concerned about bending/breaking.

    Also - hey, no love for my Bismarck??? Boo!

    https://www.scrapcombatships.com/commodore/warships/bismarck.html

    BTW, shh, don't tell anybody but I was sandbagging it for that video, the Bismarck will actually spin on its center - don't tell anyone!
     
  4. SnipeHunter

    SnipeHunter Well-Known Member

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  5. tgalx3

    tgalx3 Well-Known Member

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    Well share the secret. Lol
     
  6. SnipeHunter

    SnipeHunter Well-Known Member

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  7. Kevin P.

    Kevin P. Well-Known Member

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    They seem in the ballpark with other options, shown next to 1.75” shapeways and protean design
    B3233471-CAD5-4220-91E3-DE50AD1C825E.jpeg
    Here is 2” next to shapeways 2”
    89C1E86A-B528-4AC6-88BE-F2577821FB55.jpeg
    center of the blade thickness is slightly less (0.04” vs 0.05”), so don’t try to crabwalk the stern across a boat ramp, but 15% of cost of shapeways ($9.7 vs $63 for 2”). No run time on my boats yet because new builds have slowed with life, and I have some pre-fire prop shop props still to use
     
  8. tgalx3

    tgalx3 Well-Known Member

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    It looks like you are getting more thrust on the turns to whip it around. Do you have different settings to change the speed on the turns?
     
  9. GregMcFadden

    GregMcFadden Facilitator RCWC Staff

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    Look closely at the rudder shape and how they are set up to turn. It is the end result of that type of tuning the rudder shape and interaction
     
  10. tgalx3

    tgalx3 Well-Known Member

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    So its just my imagination?
     
  11. SnipeHunter

    SnipeHunter Well-Known Member

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    Nope, just your imagination. A system such as you describe would most likely run afoul of:

    D. RUDDERS

    1. Only rudders shall be used to steer ships. No "turning motors" or other systems may be used to assist in turning.


    There isn't a secret or some hidden trick to it. A ton of people have inspected that setup, nothing hidden. Heck it's not even using some of the other stuff out there like end plates on the rudders, so in theory it might even be able to be "improved".
     
    Last edited: May 22, 2023
  12. tgalx3

    tgalx3 Well-Known Member

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    Haha. Improved. You set the bar high.
     
  13. Beaver

    Beaver 2020 Rookie of the Year Admiral (Supporter)

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    With our recent rule change giving ships greater rudder area it's been much easier to make a ship turn well. My Jean Bart will spin and it is a duel prop, single rudder boat. It shouldn't be too hard to make a Bismarck turn that well.

    View: https://youtu.be/jgIZe_z3VUA
     
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