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Thread: Castle 2028 800KV Amps

  1. #1

    Default Castle 2028 800KV Amps

    Hi. Has anyone checked the current draw of this motor, on 6S up to 12S ?
    Can't find the info anywhere. Thanks!

    Trying to choose an ESC.

    Where can I get a 6V 3+A, BEC for a 12S battery?
    Thx again

  2. #2

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    Also, what does "1Y" refer to?

  3. #3

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    6s. The new hobbyking120- 160 A, (do not know it)
    8s. Yep 120 A, (great ESC.)
    10s. Swordfish 240-300 A + (flier+++).
    12s. Flier 16-24s. esc. 400 A

  4. #4

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    The 2028 will run right around 200-225A on 8S with a competitive prop load for heat racing.
    On 10S I was logging around 250-310A consistently using an MGM40063.
    I would not advise running the 2028 on 12S in a boat. Just too much load.
    Tyler Garrard
    NAMBA 639/IMPBA 20525
    T-Hydro @ 142.94mph former WR

  5. #5

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    Thx Tyler. Great info. Looks like that 180A is a little light
    Just looked up that ESC. $860 Euros? Can that be right?
    Swordfish 300 Pro HV sound OK?
    How do you power Rx and servos?
    Cheers

  6. #6

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    Yeah, the MGM's are not cheap, but you are talking about 12kW of continuous power with logging and safety built in to protect from frying an expensive controller.
    Although I have not tested the new SF300 Pro HV, I have heard good reviews from several guys I trust.

    I recommend to skip using a BEC even if the ESC has one and use a physical switch and RX pack to power the receiver and steering servo.
    Tyler Garrard
    NAMBA 639/IMPBA 20525
    T-Hydro @ 142.94mph former WR

  7. #7

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    OK, good advice. How do you handle the common grounds? (Rx and ESC)
    I need advice on antenna's. Are todays ground TX's on 2.4 GHz like aircraft? They use twin antenna's? I just haven't got to the research yet.
    Thx

  8. #8

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    On the ESC just remove the red or middle wire from the 3 pin receiver connector and tape it out of the way. Don't cut it as you will likely need it for programming.

    For the receiver antenna, on most ground systems like Futaba there will be an internal antenna and an external one. You want to have the external antenna outside the boat and pointing vertically.
    On the modern 2.4GHz systems, the last 1" is what needs to be up in clear air. If the external antenna is too short, various companies sell longer antenna which you can exchange.
    Tyler Garrard
    NAMBA 639/IMPBA 20525
    T-Hydro @ 142.94mph former WR

  9. #9

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    Quote Originally Posted by RaceMechaniX View Post
    The 2028 will run right around 200-225A on 8S with a competitive prop load for heat racing.
    On 10S I was logging around 250-310A consistently using an MGM40063.
    I would not advise running the 2028 on 12S in a boat. Just too much load.
    When you say 250-310A on 10S with an MGM40063, it was for how much time (a few seconds, minutes, a full 10000Mah pack...) ? How was the motor shape after this run between 10 to 12kW of input power ? how was the temp ? Do you think it can cope with these running conditions with good reliability ? Thx a lot !

  10. #10

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    This was a heat racing set-up so it was only intended to run 7-8 laps maximum. The motor did get warm, but not hot. If I ran longer and used more capacity it would likely damage the motor.
    It cannot run at these conditions for extended periods.
    Tyler Garrard
    NAMBA 639/IMPBA 20525
    T-Hydro @ 142.94mph former WR

  11. #11

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    Hi guys. I use a 3" extension with the red wire removed. Therefore I don't mess with the connector on the ESC.
    The Villages, FL
    club site - http://castawaysboatworx.club/

  12. #12

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    Quote Originally Posted by RaceMechaniX View Post
    This was a heat racing set-up so it was only intended to run 7-8 laps maximum. The motor did get warm, but not hot. If I ran longer and used more capacity it would likely damage the motor.
    It cannot run at these conditions for extended periods.
    OK thx for the info !

  13. #13

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    Quote Originally Posted by RaceMechaniX View Post
    This was a heat racing set-up so it was only intended to run 7-8 laps maximum. The motor did get warm, but not hot. If I ran longer and used more capacity it would likely damage the motor.
    It cannot run at these conditions for extended periods.
    I think that with a constant current between 250 and 310 amps for 7 to 8 laps and keep it under 80°C is already a performance... Do you know the phase resistance bullet to bullet of the 2028, I can't find this info anywhere. In fact there is two infos that I can't find, I0 (no load current) and Ri (phase resistance)... Thx !

  14. #14

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    Castle does not release amp ratings or resistance values to the public.

    https://forums.offshoreelectrics.com...kv-motor-specs

    .
    ERROR 604 - Caller's Buffer Is Too Small
    1. Ensure that your port is not configured to a mini plug
    2. If you are still having problems, contact someone

  15. #15

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    Quote Originally Posted by Fluid View Post
    Castle does not release amp ratings or resistance values to the public.

    https://forums.offshoreelectrics.com...kv-motor-specs

    .
    I know that castle does not release any spec about motors and esc, it was in case that you have measured these values. I've done these measures, for example, on the losi dbxl-e stock 800kv motor, Ri is 5.8milliohm (at bullet connectors) and I0 at 32V is 4.2A. With these values you can calculate or graph the efficiency curve and have a good idea of the motor behavior at a specific current level (execpt for the iron saturation max current).

  16. #16

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    The castle 8mm connectors are around 0.05mOhm.
    Tyler Garrard
    NAMBA 639/IMPBA 20525
    T-Hydro @ 142.94mph former WR

  17. #17

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    Quote Originally Posted by RaceMechaniX View Post
    The castle 8mm connectors are around 0.05mOhm.
    You have measured it I suppose ? If it is the case it is a coherent value. The new hobbywing 56113 motor with an integrated temp sensor (800kv 4 poles and 1210 gramms and 3.2A I0, no voltage given, certainly at 15V, see the datasheet) is annouced at 4.9 milliohms. The castle 2028 is 4 poles 1Y 1230 gramms so it seems to be very very similar configuration. The hobbywing winding config is unknown but certainly the same as the 2028.

    This new hobbywing is possibly a good quality/price ratio motor with the 2028. It would be interesting to have a side by side comparison
    Last edited by maxxximatoze; 03-02-2019 at 05:07 AM.

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