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    Police Boat Captain
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    Member No.#476
    Registered๐Ÿ“…31st Dec 2008
    Last Online๐Ÿ“…24th Jul 2011
    City๐Ÿ“JakeKnight
    Country๐Ÿ‡ฌ๐Ÿ‡งUnited Kingdom
    Genderโ™‚๏ธMale
    Age๐Ÿ‘ถNot Provided
    Posts๐Ÿ’ฌ85
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    Likes Received๐Ÿ‘34

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    Chief Petty Officer 2nd Class
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    (Police Boat) Other
    Changed from brushed to brushless and LIPO, the boat now weighs a lot less and is very fast. (Motor: Turingy 3600KV) (10/10)
    (Seaplane tender) Other
    The boat is very fast because its so light. The top speed of the boat is way more than scale speed but when I slow down it runs for about 1/2 hour. I tried a top spec racing battery in it and it started to bounce around and leap out of the water. Not scale speed but huge fun! (Motor: Raboesch) (ESC: Mtroniks Viper Marine 20) (8/10)
    Recent Posts
    ๐Ÿ’ฌ Seaplane Tender
    8 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    Orginaly I had a scoop in-line with the prop but on the left of the hull. (see the photo below) This wasn't very effective and pulled the boat to one side. I modified this by moving the rudder back about 10mm and fitted a piece of curved acrylic tube between the prop and rudder to pick up the water. I think as long as you fit the scoop behind the prop in the flow of water, it should work well. The outlet is on the side of the hull, it would work just as well on the back.

    hull
    outlet
    prop
    prop tube
    acrylic
    rudder
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    ๐Ÿ“ Powerboat
    10 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    Today I used a CNC Miller to make the mould for the cabin. The cabin was designed In ProEngineer first and then milled.

    The mould was milled from a dense foam material.

    After milling the mould I used a vacuum former to make the cabin In clear polypropylene.

    cabin
    former
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    ๐Ÿ“ Propshaft
    10 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    Got the propshaft and motor in, it runs very smooth and quietly

    I filled the front 2 sections with expanding foam so if the boat ends up upside down, full of water it should still float and I'll be able to rescue it.

    motor
    prop
    propshaft
    prop shaft
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    ๐Ÿ’ฌ Boat stand, ESC and Servo
    10 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    I will be using a 35mm 2 blade prop on either 7.4V or 11.1V LiPO, I took this set up out of my Police Boat before converting it to brushless and it worked fine with no overheating problems. ESC was running about 45C.

    I was thinking more along the lines of sealing it with primer (Project budget running low)

    I've got the thin epoxy, can't remember the brand but the school have used it before for sealing wood, I experimented with it on my wood, works well. I did one thin coat, left it to dry, sanded, 2nd coat then sanded again. Then I sprayed it with Plastikote primer then went over that with 2 coats of fluorescent yellow and the finish was perfect.

    Time to have a go at propshaft.

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    ๐Ÿ“ Boat stand, ESC and Servo
    10 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    Today I made the boat stand, used the trick of wrapping solder round the hull to get the shape then transferred it onto the wood and cut it out.

    Also fitted the rudder, rudder servo and ESC.

    The ESC is only 30A but will be fine for the graupner 600 plus it has LiPo cut off.

    graupner
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    ๐Ÿ“ Free from the board!
    10 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    Today I got the hull of the building board. This was done by prising and smashing the bulkhead supports of the building board. I think the hull looks good and it only weighs 550 grams.

    Next job is the boat stand.....

    build
    bulkhead
    hull
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    ๐Ÿ“ Skin Completion
    10 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    All 6 skins are on, I used more filler and sanding to smooth the joints. The tape was stuck on to see what the hull will look like when the joints are finished.

    filler
    hull
    sanding
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    ๐Ÿ’ฌ 2nd Skin
    10 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    Thanks for your help, once I have the hull finished and the deck on I will go for the cloth and epoxy, could do with the extra strength if I decide to put an engine in the boat.

    deck
    engine
    epoxy
    hull
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    ๐Ÿ“ 2nd Skin
    10 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    Today I glued on the second skin and used car body filler to fill and smooth the joint.

    I have heard about coating wooden hull's in thinned epoxy, has anyone tried this before?

    epoxy
    filler
    glue
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    wood
    wooden
    coating
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    ๐Ÿ“ 1st Skin
    10 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    1st skin is now glued in place.

    glue
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    ๐Ÿ“ Stringers + Building Board
    10 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    Now have the stringers glued on and the hull mounted on the building board ready for the skins.

    build
    glue
    hull
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    ๐Ÿ“ Laser Cut Bulkheads
    10 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    The bulkheads and keel were cut out using a laser cutter.

    bulkhead
    bulkheads
    keel
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    ๐Ÿ“ Hull Design
    10 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    For my Engineering Diploma I have to do a project so I'm going to build a powerboat.

    From looking at some photos I managed to draw up the bulkheads and make this model in ProEngineer. The cabin needs some more work.

    build
    bulkhead
    bulkheads
    cabin
    engine
    hull
    model
    power boat
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    ๐Ÿ“ Jotika Sea Queen
    10 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    I would recommend you go for deans connectors. I used tamiya ones in my police boat and they melted within a few minutes, since I changed to deans connectors the boat is a slight bit faster and the connectors don't even get warm.

    connector
    police boat
    tamiya
    sea queen
    deans
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    ๐Ÿ“ Police Boat
    10 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    I swapped the tamiya connectors for deans connectors now I can go flat out without worrying about melting anything.

    Also added a cooling fan to the ESC to keep It cooler.

    Didnt want to try and water cool It Incase of a leak which would be a disaster with the LiPo In.

    To keep the LiPo safer I have fitted windows to the back cabin, I will get some photos......

    cabin
    connector
    cooling
    lipo
    tamiya
    esc
    wind
    deans
    windows
    window
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    ๐Ÿ’ฌ Well Its time to finnish It off
    10 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    What power set up are you going for in this boat?

    power boat
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    ๐Ÿ“ Police Boat at Vienese Evening
    10 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    Here's a video of my boat running at Vienese evening, powered by a brushless motor and LiPo battery.
    Fireboat Website! - Video: 1111551384
    โ–ถ๏ธ

    brushless motor
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    police boat
    brush
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    video
    battery
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    ๐Ÿ“ Vienese Evening at Bourneville Boating Lake
    10 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    Few photos from Vienese Evening. Trying to drive in the pitch black was fun.

    boating
    lake
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    ๐Ÿ“ First Brushless Test
    10 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    With the boat weighing a lot less it was a lot faster. Although over half the boat was out of the water it planed fairly level but was very difficult to drive.

    And after a few minutes of driving with LIPO the tamiya connector's melted, so I will be changing to deans connectors.

    Next time the boat goes out I will get some video.

    connector
    lipo
    tamiya
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    video
    air boat
    deans
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    ๐Ÿ“ (Police Boat) Other
    10 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    Changed from brushed to brushless and LIPO, the boat now weighs a lot less and is very fast. (Motor: Turingy 3600KV) (10/10)

    lipo
    brush
    brushless
    brushed
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    ๐Ÿ“ Brushless Motor In + LIPO
    10 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    The rest of the parts arrived and the motor is now in.
    Tested it in the bath and the power was incredible, easily twice the power of the graupner 600, next is a test on the lake.

    I also brought a 7.4V 4000mah LIPO pack for my car so while I'm at it I'll see what it can make the boat do.

    brushless motor
    graupner
    lake
    lipo
    motor
    parts
    brush
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    power boat
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    ๐Ÿ“ Brushless ESC + Motor
    10 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    The brushless ESC is now in, its un branded but is rated for 50 amps and up to 22V so should easily be able to handle the motor. I connected it up to the motor and it works ok just a little cogging at low speed because the motor is sensoreless.

    The motor is a Turingy 3600 KV inrunner with a built in cooling coil, I found out after ordering it that out runners have more torque and stay cooler. (should have done more research). I'll give it a run with different sized props and voltages, then change to an outrunner if there are problems.

    brushless motor
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    speed 600
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    voltage
    outrunner
    motor cooler
    built
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    ๐Ÿ’ฌ more pics of my seaplane tender
    10 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    I didn't use a plan. I made most of it up as I went along, some inspiration came from this http://cosmicadventure.com/gallery/albums/album43/Ambulance_...
    If you want any more photos or measurements from my boat just ask.
    The brushless motor and ESC arrived today, the mount and coupling should come next week and then it will be time to fly.
    http://cosmicadventure.com/gallery/albums/album43/Ambulance_boat.jpg
    ๐Ÿ”—

    brushless motor
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    ๐Ÿ“ On the lake
    10 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    Here are some photos from the last time it went out.
    Running a 3600 racing pack is was fast, but not as fast as my seaplane tender so I am going brushless............

    lake
    brush
    brushless
    seaplane
    seaplane tender
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    ๐Ÿ“ Stickers, lights and fittings
    10 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    Being a long time since the last update. I now have some very good looking POLICE and 442 stickers.

    Also fitted 2 searchlights to the cabin roof one facing forward and one facing backwards.

    To finish the fittings of I went for a set of bollards.

    cabin
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    roof
    searchlight
    cabin roof
    lights
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    ๐Ÿ“ Aerokits 34" Fire Tender
    10 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    I have the same problem with my seaplane tender, it leaps out of the water and almost stands verticaly.

    to slow it down I reprogrammed the ESC. instead when you are meant to give it full power then press the setup button I gave it just over half.

    I can now pull the trigger all the way back and the boat planes safely now. ๐Ÿ˜€

    another thing I tried whilst using my spectrum conroler was to just adjust the end point for the throttle.

    aerokit
    esc
    power boat
    spectrum
    seaplane
    seaplane tender
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    ๐Ÿ“ What was yout first boat?
    11 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    My first boat, was when I was 11, it was a block of wood with foam attatched to the sides to keep it afloat and a hairdryer fan on the back to make it move. it was slow and I used it twice before getting the seaplane tender then building the police boat. ๐Ÿšค

    build
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    wood
    boat building
    wood boat
    seaplane
    seaplane tender
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    ๐Ÿ“ Exhausts and Fittings
    11 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    I made some simple exhaust from some pipe and got some cleets.

    All I need now is some flashing lights and police stickers.

    exhaust
    fittings
    lights
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    ๐Ÿ“ Out on the lake.
    11 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    The boat went out lots of times whilst being built.

    The boat went well, quite fast and very stable.

    The battery lasted 20 minutes and the cooling system worked fine.

    cooling
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    system
    built
    battery
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    ๐Ÿ“ Boat Stand
    11 years ago by Police Boat Captain ( Chief Petty Officer 2nd Class)
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    I made a simple boatstand from some wooden blocks and the left over ply.

    Also fitted carry handles.

    I used strips of solder to get the shape of the hull.

    hull
    wood
    wooden
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