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    sheaffy
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    Member No.#3919
    RegisteredπŸ“…20th Oct 2016
    Last OnlineπŸ“…10th Dec 2018
    CityπŸ“Sandown PO36
    CountryπŸ‡¬πŸ‡§United Kingdom
    Gender♂️Male
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    Recent Posts
    πŸ“ ESC problem
    8 years ago by πŸ‡¬πŸ‡§ sheaffy ( Recruit)
    ✧ 0 Views · 0 Likes
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    Hi Dave, both the motor and the ESC have water cooling,

    The boat does need a fair bit of speed as in the use case, speed is of the essence, it is a GPS controlled boat, i set the GPS cords and it goes there, all the technical side is working, from my testing at low throttles, however when i cranked it up thats when the ESC blew..

    Luckily all the electronics are on a completely separate power supply πŸ˜‰ so they are all safe 😊

    Do you have any links to products that you would recommend?

    Regards
    Ashley

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    πŸ“ ESC problem
    8 years ago by πŸ‡¬πŸ‡§ sheaffy ( Recruit)
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    Thanks for the reply, the boat was working and producing considerable thrust. for around 8-9 minutes, then fuzzed out.....

    We had a 160A ESC -> link to the ESC that blew.

    https://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=45159
    πŸ“ ESC problem
    8 years ago by πŸ‡¬πŸ‡§ sheaffy ( Recruit)
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    Hi there, bit of a newbie to ESC's

    Need some advice on what AMP rating to get for the current setup any and all help is appreciated.

    Prop -> Graupner Jet Propulsion Unit 5 (2347) (G2347)
    Flange Diameter: 78mm
    Shaft Diameter 7mm


    Motor -> Graupner HPD 2948-3760 7.4V Brushless Motor
    Operating voltage range : 7,4... 24 V
    All-up weight, approx. : 180 g
    Free shaft length: 10 mm
    Output : 2000 W
    Number of poles: 4
    Permissible motor direction : R und L
    Case length: 58,2 mm
    Shaft diameter: 4 mm
    Max. charging rate: 105 A
    Case diameter: 29 mm
    Revolutions/Volt: 3760
    Part No: G7757


    Battery -------
    7.4v 2s 40c 5600mah

    Boat ->
    Weight: will be 8 Kilos once equipment fitted.
    currently around 5 kilos.

    length:1.3m

    I hope that this information is suitable and can help with my question.

    many thanks πŸ˜€
    Ashley



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