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Thread: ESC recommendations

  1. #41
    maddox10's Avatar
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    Passive cooling is better than fans.
    But if you add a heatsink, look it at the other way around. Add the ESC to the heatsink.

  2. #42
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    How big a heat sink would be needed to replace 80mm fans?

  3. #43
    maddox10's Avatar
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    Depends on surface area and total mass. Color and material are also nice to know.

    For our application black anodised aluminium is the best option.

    https://www.aliexpress.com/wholesale...hText=heatsink

    But to give you an idea. In the Sidewinder , the heatsink was 2 smallish ali blocks bolted to the ali casing.
    http://www.robotpower.com/products/sidewinder_info.html
    Last edited by maddox10; Yesterday at 17:10.

  4. #44
    team death's Avatar
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    It's interesting that experienced Roboteers are against fan cooled
    ESC's and there are more expensive fan cooled ESC's on the market
    uk/vyper-120a-dc-motor-controller.html at £200 + so I guess they
    are not fit for purpose either?.
    Whats most intriguing is that team Katch have a heavyweight Robot
    up and running/ driving around with a relatively cheap ESC and unlike
    myself-it didn't go bang when they plugged it in (different ESC ) and
    also you have to applaud the testing at higher voltages.
    And if you do requests can you try on 2 lipo 4s in series perhaps trying
    to tow a car-I can loan you the batteries and if it's ok with this, mine
    will be on order the next day.

  5. #45
    katch's Avatar
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    Quote Originally Posted by team death View Post
    It's interesting that experienced Roboteers are against fan cooled
    ESC's and there are more expensive fan cooled ESC's on the market
    uk/vyper-120a-dc-motor-controller.html at £200 + so I guess they
    are not fit for purpose either?.
    Whats most intriguing is that team Katch have a heavyweight Robot
    up and running/ driving around with a relatively cheap ESC and unlike
    myself-it didn't go bang when they plugged it in (different ESC ) and
    also you have to applaud the testing at higher voltages.
    And if you do requests can you try on 2 lipo 4s in series perhaps trying
    to tow a car-I can loan you the batteries and if it's ok with this, mine
    will be on order the next day.

    I think they have enough experience to be openly concerned for other builders. Who have not yet put up cash..

    I on the other hand already spent the cash so I do need to overcome the potential issues so help is more useful now.

    The offer for lipo is cool . what area are you in Colin.

  6. #46
    Maxamuslead's Avatar
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    Quote Originally Posted by team death View Post
    It's interesting that experienced Roboteers are against fan cooled
    ESC's and there are more expensive fan cooled ESC's on the market
    uk/vyper-120a-dc-motor-controller.html at £200 + so I guess they
    are not fit for purpose either?.
    The Vyper uses a actual heatsink where the Cytron just blows onto the mosfets.

    I also believe the Vyper has bean used in combat bots both into the US and UK. (I might incorrect on this)

  7. #47
    team death's Avatar
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    Thank's for the info on the vyper Mark, but it's still a fan cooler
    so I assume it's vunerable to Combat impacts.

    I have just noticed your location down in somerset there Team
    Katch (member first name required) -I'm up north of York so
    popping round with the lipos may be impracticable but I'm
    very interested in this controller.
    What is the highest voltage you have put into the ESC and
    do you have any issues with sparking when you connect to batteries ?

  8. #48
    Ocracoke's Avatar
    Team Kaizen

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    I also believe the Vyper has bean used in combat bots both into the US and UK. (I might incorrect on this)
    I am sure Foxic uses them when I last saw the robot, so definitely in the UK at the very least.
    Team Kaizen

    AW - Osu
    BW - Shu! (Build Thread)
    FW - The Honey Badger (Build Thread)
    HW - Kaizen (Build Thread)

  9. #49
    katch's Avatar
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    Quote Originally Posted by team death View Post
    Thank's for the info on the vyper Mark, but it's still a fan cooler
    so I assume it's vunerable to Combat impacts.

    I have just noticed your location down in somerset there Team
    Katch (member first name required) -I'm up north of York so
    popping round with the lipos may be impracticable but I'm
    very interested in this controller.
    What is the highest voltage you have put into the ESC and
    do you have any issues with sparking when you connect to batteries ?
    48v was tried esc was fine but motors didn' like it... I'll try my lipo when they arrive
    Last edited by katch; Today at 11:02. Reason: typo

  10. #50
    maddox10's Avatar
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    The fans on the Vyper (and Victors ) still are vurnable.

    Some of the ESC's have them to boost performance further (increased running time with heavy loads), others just use them as a pure replacement for a heatsink.

    The "pure" heatsink replacements ain't good in my opinion. Already to much to go wrong in our machines, we shouldn't add more.

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