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Thread: 12mR scale 1:12

  1. #101

    Default Re: 12mR scale 1:12

    Hello again. I know this rig will be a bit much, but I wanted it to look scale. I'm going to build one more rig, B size to be able to sail in heavier breeze. I will bend the mast like the original. In the picture, there is no back stay.

  2. #102
    Join Date
    Apr 2005
    Location
    Toulouse (Fra)
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    3,244

    Default Re: 12mR scale 1:12

    Much depends on the ballast you manage to fit in the keel.

    I do assume that the scale factor is 19.22m : 1.8m =10.67
    Displacement factor should be the cube of : 10.67x10.67x10.67 = 1214
    Australia Displacement was 21800kg, therefore the model weight should be 21800 /1214 = 17.95 kg

    How much of this weight is supposed to go into the lowest part of the Keel ?

    Answer not really required !

    Cheers

  3. #103

    Default Re: 12mR scale 1:12

    the keel weight is 17.8 kg. The hull is probably 300 grams heavier due to the fact I built the hull as a plug to begin with.
    I will produce a mold in the fall. From the mold it will be easy to produce a hull at less than half the hull weight in the current model.

    The wings are lead and the boat feels very stiff when I test float the boat. I think I will be able to sail in winds up towards 4-5m/s.

    Cheers,

    Lars

  4. #104
    Join Date
    Apr 2005
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    Toulouse (Fra)
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    Default Re: 12mR scale 1:12

    Hi Lars,
    I didn't expect a keel so heavy.
    Cheers

  5. #105

    Default Re: 12mR scale 1:12

    Continued work on the rig today. Also sprayed some more paint on the keel area. Almost done painting, and ready to wet sand and polish again.
    The weather is super nice today and I took the opportunity to be outside working on the rig.

    //Lars
    Click image for larger version

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  6. #106

    Default Re: 12mR scale 1:12

    Worked on the sails last night. Got help from a buddy who is a sail maker.Click image for larger version

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  7. #107

    Default Re: 12mR scale 1:12

    Cut the mast curve today.
    Click image for larger version

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  8. #108
    Join Date
    Apr 2005
    Location
    Toulouse (Fra)
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    3,244

    Default Re: 12mR scale 1:12

    Interesting and shape appears well done. The Jib for when ?
    Cheers
    Claudio

  9. #109

    Default Re: 12mR scale 1:12

    I hope to finish the sails this weekend.
    Will work on the main tomorrow.

  10. #110

    Default Re: 12mR scale 1:12

    Been working on the jib sheet system this weekend.
    Click image for larger version

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