New sail TNT 34

Discussion in 'Multihulls' started by motorcat, Feb 25, 2010.

  1. bruceb
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    bruceb Senior Member

    Nice!!

    That is a really nice looking boat, and it must be close to correct weight, considering it has quite a large "test" crew. Good work! B
     
  2. Doug Lord
    Joined: May 2009
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    Doug Lord Flight Ready

    Tnt 34

    ===================
    Congratulations, MC- looks great! What were your impressions? Must feel pretty good having done the design and all the tooling!
     
  3. motorcat
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    motorcat Junior Member

    We did 9 kts with a wind about 4-5 kts and 7 kts on power with 3500 rpm ( max 6000 rpm ). We need now a really wind and warmest weather . Keep You posted
     

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  4. motorcat
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    motorcat Junior Member

  5. motorcat
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    motorcat Junior Member

    more shots
     

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  6. motorcat
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    motorcat Junior Member

    TNT 34 -The New Trimaran – First Trial
    The first sail trial of TNT 34 has happened on November 18 ,2011 on the small lake Bukowka(http://www.windguru.cz/int/index.php?sc=65606) surrounded by hills where wind speed that day was 5-9 knots. There was 5 people on board and not all sails and rigging were in place to attain higher speeds.
    After launching the yacht by crane (no ramp available), the engine was started to stay against the wind and to hoist the sails .The daggerboard was lowered to 70 % of its length due to unknown and potentially shallow conditions .The following results were obtained :
    - TWS 7-9 knots, wind angle 70 deg ,boat speed 7,8 knots (TWS –True Wind Speed)
    - TWS 5-6 knots, wind angle 70 deg ,boat speed 6,5 knots
    First tacks were quick and TNT easily crossed the wind line . Loss of boat speed was not more than 50 % (20 tacks were made) and yacht did not “hesitate “ or “stopped” crossing smoothly the wind line .
    After up wind trial TNT started to tack with the wind and following results were obtained:
    • TWS 5-6 ,wind angle 120 deg ,boat speed 8-9 knots
    • TWS 7-9 ,wind angle 120 deg ,boat speed 9-10 knots
    Jibing was easy too with only 20 % loss of boat speed .
    Then series of tacks and jibes were performed on a beam reach. In both cases TNT 34 crossed easily the wind line and tack radius did not exceed 1.5 hull length .Also TNT performed flawlessly twice man overboard manoeuvre (mandatory for some EU skippers during exam ) .

    Report by Piotr Adamowicz ,Yacht Captain
    Piotr has sailed 58000 NM of which 38000 NM are in racing .14 times Polish Yacht Championships in different categories and yacht classes .Piotr has also participated 9 times in ¼ Ton World Cup (IOR) with being 5th, in 1995 and 6th in 1995.
     
  7. motorcat
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    motorcat Junior Member

  8. motorcat
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    motorcat Junior Member

  9. motorcat
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    motorcat Junior Member

    Tnt 34

    final interior and exterior pictures
     

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  10. Doug Lord
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    Doug Lord Flight Ready

    You guys have done some good work MC-congratulations again!

    Question: why did you chose twin rudders-was the center position of the motor the driving factor?
     
  11. motorcat
    Joined: Feb 2010
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    motorcat Junior Member

    The advantages of this set up is as follows:
    - More ruder area less leeway=more speed
    - When heeled TnT still has better grip than single rudder
    - O/B is centered =better flow =speed , 30 hp gave us 9,4 knots
     
  12. pogo
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    pogo ingenious dilletante

  13. Doug Lord
    Joined: May 2009
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    Doug Lord Flight Ready

    Tnt34

    From page 1, post 13

    =================
    Pogo, you're dead wrong.......Seems like a great boat ,right on target.
     
  14. motorcat
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    motorcat Junior Member


  15. pogo
    Joined: Mar 2010
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    Location: Germany Northsea

    pogo ingenious dilletante

    First 1,5to,
    then 1,6to,
    measured 1,750 to for a naked shell.
    Winches , deck-fittings, rigg, rudders, motorbracket, windscreen, a. s. o. ....300+kg
    2,1--2,2to as estimated month ago, see posting 12.

    pogo
     
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