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  1. #1

    Join Date
    Nov 2012
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    CHRISTCHURCHCANTURBURY, NEW ZEALAND
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    Yellow Boat Coroplast Boat Design

    Yellow Boat Coroplast Boat Design

    http://www.rcuniverse.com/forum/js/f...oolbar=Default) 9 fill / 9px stretch;">http://www.rcuniverse.com/forum/js/f...oolbar=Default) 9 fill / 9px stretch;">

    [youtube] http://www.youtube.com/watch?feature...&v=x1WdO7mpWyE[/youtube]

    2C Turnigy 5000mAh 20C
    2 X NQD 20mm Jet Drives RPM 28,000 @ 90% of 7.4V
    2 X Turnigy 2627 4200kv Imax 22A Vmax 11.1
    2 X Turnigy AE-30A Brushless ESC

    Yellow Boat at Chartaris Bay Banks Peninsula New Zealand 07-10-12

    Displacement 1280 g power 350 Watts. With all the FPV gear. Have no way of recording the goggle feed presently, but the GPS read 22Kmh on the OSD not too bad

    Hobbyking G-OSD II Mini OSD System w/GPS Module
    5.8g 200mw FPV Wireless AV Tx & Rx Set

    2C Turnigy 5000mAh 20C
    2 X NQD 20mm Jet Drives RPM 28,000 @ 90% of 7.4V
    2 X Turnigy 2627 4200kv Imax 22A Vmax 11.1
    2 X Turnigy AE-30A Brushless ESC

    Map

    Yellow Boat Power Test 2 745 Watts 74A 3 X 3C Turnigy 2200mAh

    Bath test 2 with high voltage 3C Lipos exceeds max Amps of motors (22A) by 12 Amps at peak. Hot motors fortunately not burned out. 10 Seconds at that power you will already be where you were heading anyway ESC's held up well a no over temp . Too much I think but tempting to try it on the water

    3 X 3C Turnigy 2200mAh 20C
    2 X NQD 20mm Jet Drives RPM 41,900@ 90% of 11.,1V
    2 X Turnigy 2627 4200kv Imax 22A Vmax 11.1V
    2 X Turnigy AE-30A Brushless ESC

    Corriboard 3 hour Yellow Boat run at Sumner Beach Christchurch

    Corriboard & hot glue 3 hour Boat

    Run at Sumner Beach 5th October 2012 Christchurch on a windy day rides well

    Displacement 860 grams with Turnigy7.4V 20C 5000mAh about 8 minutes fast running

    Map

    2C Turnigy 5000mAh 20C
    2 X NQD 20mm Jet Drives RPM 28,000 @ 90% of 7.4V
    2 X Turnigy 2627 4200kv Imax 22A Vmax 11.1
    2 X Turnigy AE-30A Brushless ESC

    http://kiwitricopter.blogspot.com/20...ner-beach.html

    Corriboard 3 hour Boat Run at Sumner Beach Christchurch

    Displacement

    860 grams 7.4V 5000mAh

    HobbyKing HK-010 Wattmeter & Voltage Analyzer
    3C Turnigy 2200mAh 20C
    2C Turnigy 2300mAh 20C
    2C Turnigy 5000mAh 20C
    2 X NQD 20mm Jet Drives
    2 X Turnigy 2627 4200kv
    2 X Turnigy AE-30A Brushless ESC

    -43.563259,172.757582

    Yellow Boat power tests withHobbyKing HK-010 Wattmeter & Voltage Analyzer

    Setup
    HobbyKing HK-010 Wattmeter & Voltage Analyzer
    2C Turnigy 5000mAh 20C
    2 X NQD 20mm Jet Drives
    2 X Turnigy 2627 4200kv
    2 X Turnigy AE-30A Brushless ESC








    [youtube]http://www.youtube.com/watch?feature=player_embedded&v=yo0YG2CTi8s[/youtube]


    [youtube]http://www.youtube.com/watch?feature=player_embedded&v=qtjvqqzoI4A[/youtube]


    [youtube]http://www.youtube.com/watch?feature=player_embedded&v=K2-z1CMzTig[/youtube]


    Will do a speed run on the lake weather permitting with 11.1V packsinparallelÜberRPM should be 500 Watts power / Weight = 570Watts/Kg power to weight ratio.
    The spray rails are short near the keel so as not to disturb the flow entering the jet units. Looks better than the last lake run rides higher with no sheets of water pealing of the rear section in turns. I suspect this setup is generating more lift, should give more speed. I have found a good way to brace around the hatch opening is to shove a bamboo skewer up acorrugation near the hatch opening.

    It makes it very stiff, this method is good to stiffen flat section of the hull near the chines and keel in the aft sections like I have on Yellow Boat.

    The hull panels do flex a bit ,howeverthe structure istorsionally stiff, the joins ate where it would fail as thepolypropylene itsinherentlytough. That said it does seem amplystrongasdemonstratedby isPacificOceanperformance.

    One thing with hot glue is the excess making a mess not pretty but cheap, strong, fast light and amusing to drive.

    Displacement860 grams with 7.4V 5000mAh

    HobbyKing HK-010 Wattmeter & Voltage Analyzer
    3C Turnigy 2200mAh 20C
    2C Turnigy 2300mAh 20C
    2C Turnigy 5000mAh 20C
    2 X NQD 20mm Jet Drives
    2 X Turnigy 2627 4200kv
    2 X Turnigy AE-30A Brushless ESC



    SPBD 3 Hour Boat Design

    Need to do some thinking about thecatermaransee what power level it will need and how that equates to full scale. Probably going to need large motor(s) large cost. Need another boat for which I have most of the parts in stock.

    Corriboard boat $20 and 3 hours stiff watertight hullbottomand sides onepiece, glued with hot glue. Going to fit 2 jets with 300 size heli motors which shovedProject 31"alongwhichweighsover 3 Kgs all in. This weighs 202 grams with out and engineering.
    Looselybase on the Almarine Seafire from the early seventies shown below.

    Need to clean up the glue after it is fully hardened
    Same deadrise as theAlmarine Seafire/Meteor same proportions length to beam


    Should go well with 500watts :


    2 X Turnigy 2627 Brushless 300-Size Heli Motor 4200kv 39 grams
    1 X Turnigy 2200mAh 3S 20C Lipo Pack 185 grams
    2 X Jet Units 40 grams
    2 XTurnigy AE-30A Brushless ESC 25 grams
    Radio gear, servos and camera ect. 100 grams

    Should have an all up weight of around 700 grams. lots of grunt will interesting to see how quick it is

    3 Hour Boat Pattern

    A proper set of plans will be published soon once I have tested the shapes again in card




  2. #2
    All Day Dan's Avatar
    Join Date
    Dec 2002
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    MANHATTAN BEACH, CA
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    RE: Yellow Boat Coroplast Boat Design

    You would get more replies in one of the boat forums. Dan.
    Dan


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