Hydra ice HV owners, heads up.

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  • johnson22456
    Counting down the days...
    • Jul 2008
    • 218
    #1

    Hydra ice HV owners, heads up.

    Recieved my hydra ice HV earlier this week from Steve. Looking it over before installation noticed the caps were 2 different ratings. One was 470uf 50v and the other was a 680uf rated at 35v!!! Called castle and there sending a new one out.

    Luck was on my side and fortunately I didn't smoke this new esc.

    I just wanted to give you guys a warning before powering yours up.
    Hpr 115, Neu 1521 1.5d x2. Delta force Pirate, Insane 45" Neu 2230
    Tags: None
    • Steven Vaccaro
      Administrator
      • Apr 2007
      • 8721
      #2
      Originally posted by johnson22456
      Recieved my hydra ice HV earlier this week from Steve. Looking it over before installation noticed the caps were 2 different ratings. One was 470uf 50v and the other was a 680uf rated at 35v!!! Called castle and there sending a new one out.

      Luck was on my side and fortunately I didn't smoke this new esc.

      I just wanted to give you guys a warning before powering yours up.

      thanks for the heads up! And sorry for the problem!
      Steven Vaccaro

      Where Racing on a Budget is a Reality!

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        • siberianhusky
          Fast Electric Addict!
          • Dec 2009
          • 2187
          #3
          The difference in capacitance doesn't matter, if they are in parallel you add the values together.
          The actual formula for caps in parallel is C1+C2 etc.
          Be a bit too close for comfort though with a 35v cap on an hv esc!
          Would be fine if they were both 50v.
          If my boats upside down then who owns the one I thought I was driving the last two laps?

            Comment

            • m4a1usr
              Fast Electric Addict
              • Nov 2009
              • 2038
              #4
              Originally posted by johnson22456
              Recieved my hydra ice HV earlier this week from Steve. Looking it over before installation noticed the caps were 2 different ratings. One was 470uf 50v and the other was a 680uf rated at 35v!!! Called castle and there sending a new one out.

              You are one lucky guy for bothering to take a look at the rating and values on that speedo. I'm hoping what you got was sheer bad luck or circumstances beyond quality control. A high voltage speedo should have at least 50 volt caps but even thats not safe on 12S volts. Should be using 63 volt caps. At least you caught it.

              John
              Change is the one Constant

                Comment

                • Himalaya
                  Senior Member
                  • Apr 2009
                  • 251
                  #5
                  A 470uf 50v and a 680uf 35v are same in size for a given product series, this could be the reason for CC having mixed them up.

                  I agree with m4a1usr that 63V capacitors should be used in 50V systems, there used to be a rule in EE to leave at least 20% voltage margin, especially for electrolytic capacitors. Probably CC just wanted max capacitance within the limited space.

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