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    Fuse position Rttl installation mod
    24 Posts ยท 7 Followers ยท 3 Photos ยท 79 Likes
    Began 7 months ago by
    Commander
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    Latest Post 7 months ago by
    Warrant Officer
    United Kingdom
    ( Newest Posts Shown First )
    DGoss999
    Warrant Officer
    ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
    ๐Ÿ“ Fuse position Rttl installation mod
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    I have been thinking a little more regarding this and the position of the fuse between the battery and the Motor.

    I think to a certain extent, where in circuit the fuse goes when you are dealing with a pure Linear ESC (ie. one that simply reduces the output voltage in proportion to the Throttle setting) the fuse here could go anywhere between the two!.. In a Switch mode, PWM or Brushless ESC and because of the nature of the 'pulsing' or 'chopping' of the output voltage (going repeatedly from 0v to full battery volts) of these devices, the preferred position for the fuse may well be in line with the Battery and BEFORE the ESC.

    Anyone have other thoughts??

    DG
    Believe only half of what you see and nothing that you hear.
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    RodC
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    ๐Ÿ‡จ๐Ÿ‡ฆ Canada
    ๐Ÿ“ Fuse position Rttl installation mod
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    Greg, what mfr?? The ones I see on Amazon hav a reset button (requiring a mechanical push to reset)
    GregHiltz
    Chief Petty Officer 2nd Class
    ๐Ÿ‡จ๐Ÿ‡ฆ Canada
    ๐Ÿ“ Fuse position Rttl installation mod
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    Your other option, so as to not leave you stranded out in the water, is tobuse Automotive type small circuit breaker, which will re-set after they do trip, usually in20 to 30 seconds.
    Rowen
    Captain
    ๐Ÿ‡จ๐Ÿ‡ฆ Canada
    ๐Ÿ“ Fuse position Rttl installation mod
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    Had challenges with the fuse installation on my Brave Borderer. The blog describes them in detail.
    Essentially, the cylindrical glass style fail quickly and, as the max size is around 25a, with brushless motors this is quickly achieved. Was recommended to try Automotive blade type fuses as they are โ€œslow blowโ€.
    This solved my problem. Now use a 20a fuse on each motor circuit and have not had a fuse fail for months.
    RodC
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    ๐Ÿ‡จ๐Ÿ‡ฆ Canada
    ๐Ÿ“ Fuse position Rttl installation mod
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    For my 650kv brushless on a 12v SLA the battery has a 20A fuse & then the motor has 20A fuse
    AlessandroSPQR
    Rear Admiral
    ๐Ÿ‡ฎ๐Ÿ‡น Italy
    ๐Ÿ“ Fuse position Rttl installation mod
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    Thanks so much Colin.

    It is a very precise and clear indication.

    Could you give me an example or even just tell me the value of one of your fuse?
    Rogal118
    Commander
    ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
    ๐Ÿ“ Fuse position Rttl installation mod
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    Hi Colin. I wonder if you could explain to me your recent post regarding your phrases "the stall load of the motor" and "just below total load that will blow the esc". Im only a novice with electrical terminology and have only worked with wood, metal and plastic for the last 55 years.where do i find the values to work out these answers.
    Thanks Roger.
    Roger
    Colin H
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    ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
    ๐Ÿ“ Fuse position Rttl installation mod
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    Alessandro, I find a fuse of 5amps less than the stall load of the motor, this has never failed me when getting stuck in weeds.
    The fuse to the battery should be just below the total load that will blow the esc.
    Cheers Colin.
    Fair winds and calm waters, COLIN.
    AlessandroSPQR
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    ๐Ÿ‡ฎ๐Ÿ‡น Italy
    ๐Ÿ“ Fuse position Rttl installation mod
    63 Views ยท 3 Likes
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    Great tip DGoss999.

    I will look at this data to find the right threshold.

    Meanwhile, would you have a number for me?
    Do you think 20 amps is too little? Could I go up a little more?
    AlessandroSPQR
    Rear Admiral
    ๐Ÿ‡ฎ๐Ÿ‡น Italy
    ๐Ÿ“ Fuse position Rttl installation mod
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    Good evening to all modelers.

    I have to thank Roger for opening this discussion, because it is very interesting and brings me back to a doubt I had. A doubt that I would like to remove.

    I went to look at the photos (because I didn't remember and I did it before unscrewing the covers) to see what threshold I chose for the fuse.

    As you can see in the photo I put a 20 amp fuse (connected to the fastons).
    It has never jumped until now but I'm afraid it's too low a threshold.
    I would like your opinion and advice.

    I did some tests to test the current intensity and chose a value double that at which the motor runs in water, almost at maximum power, without impediments.
    The engine is a Graupner Speed โ€‹โ€‹600, the battery is AGM lead, 6 volts 4.5 Ah.
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