Simple electric kayak

Discussion in 'OnBoard Electronics & Controls' started by Grippa, Aug 1, 2015.

  1. BertKu
    Joined: May 2009
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    Location: South Africa Little Brak River

    BertKu Senior Member

    Grippa, I am interested to hear whether you can positioning the over current cut out on your ESC. i.e. when you hit ground and your motor stalls, at what current is your system shut down. Are you able to set it at a particular lower current than the maximum ESC current? Or does it not shut down at all and your fuse has to blow? ElectricKajak for you also I love to hear what happens to your system? Bert
     
  2. Grippa
    Joined: Aug 2015
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    Location: Tasmania

    Grippa Junior Member

    Recommended 50amp DC resettable circuit breaker at battery. Speed controller is rated at 80 amps. It's never happened.
     
  3. BertKu
    Joined: May 2009
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    Location: South Africa Little Brak River

    BertKu Senior Member

    O.K. thank you. I assume you work on 12 Volt. i.e. 600 watt maximum. Bert
     
  4. Grippa
    Joined: Aug 2015
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    Location: Tasmania

    Grippa Junior Member

    That's right Bert. Very simple, not too many parts.
     
  5. BertKu
    Joined: May 2009
    Posts: 2,478
    Likes: 42, Points: 58, Legacy Rep: 223
    Location: South Africa Little Brak River

    BertKu Senior Member

    Thank you Grippa, enjoy your kayaking. Bert
     

  6. BertKu
    Joined: May 2009
    Posts: 2,478
    Likes: 42, Points: 58, Legacy Rep: 223
    Location: South Africa Little Brak River

    BertKu Senior Member

    I hope it never happens, as your MOSfets in the ESC can only handle maximum 160 - 200 Ampere for microseconds. Most circuit breakers takes a little more current to cut the current off and if your motor has stalled it is a short circuit i.e. very large current. Thus, only if your ESC can cut immediately the system at 81 Ampere off, your safe. Your circuit breaker is not going to help you much, other than a short circuit current before the ESC. Bert
     
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