Aluminum End-cap Heatsink, for SD

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  • toppack
    Rear Admiral
    • Nov 2008
    • 1124

    Aluminum End-cap Heatsink, for SD

    David & Mike,
    How much would you charge for a machined aluminum end-cap, with O-ring groove, for my 3.5" SD?
    To be used as heatsink.
    (no holes needed in it, I can do that)

    I moved this Silly question to this forum so it would get the attention it Deserves.;)
    Rick L.
    --------------------------------------------
    * Asking Questions is a 'Good Thing',
    Since Learning is Always a 'Good Thing' *
  • He Who Shall Not Be Named
    Moderator
    • Aug 2008
    • 12256

    #2
    Originally posted by toppack
    David & Mike,
    How much would you charge for a machined aluminum end-cap, with O-ring groove, for my 3.5" SD?
    To be used as heatsink.
    (no holes needed in it, I can do that)

    I moved this Silly question to this forum so it would get the attention it Deserves.;)
    A good product, but I don't have the facilities here to turn anything bigger than a three-inch end-cap from aluminum -- and if I did, the shop rate would kill you on the spot.

    David,
    Who is John Galt?

    Comment

    • toppack
      Rear Admiral
      • Nov 2008
      • 1124

      #3
      Originally posted by Merriman
      , the shop rate would kill you .

      David,
      Somehow, I knew you were going to Say that! :rolleyes:
      Rick L.
      --------------------------------------------
      * Asking Questions is a 'Good Thing',
      Since Learning is Always a 'Good Thing' *

      Comment

      • toppack
        Rear Admiral
        • Nov 2008
        • 1124

        #4
        Some of the other guys may want aluminum end-caps for their smaller SDs, tho???
        Could come in Handy for ESC or BEC overheat problems, etc.?
        Last edited by toppack; 04-17-2009, 06:27 PM.
        Rick L.
        --------------------------------------------
        * Asking Questions is a 'Good Thing',
        Since Learning is Always a 'Good Thing' *

        Comment

        • Subculture
          Admiral
          • Feb 2009
          • 2119

          #5
          You could easily modify the resin end cap to incorporate a heatsink.

          Copper is a better heat conductor than aluminium, and a good cheap source is old pieces of copper plumbing. Slice some tubing up down the middle with a pair of tin snips, then open out to a sheet and press it flat between a couple of blocks of wood.

          Fashion a small pronged heatsink, then drill into the end cap to allow the prongs to fit through into the wet area. seal around the prongs with 24 hour epoxy or silicone sealant. Mount your regulator on the other side.

          That should do the trick.

          Comment

          • toppack
            Rear Admiral
            • Nov 2008
            • 1124

            #6
            Originally posted by Subculture
            You could easily modify the resin end cap to incorporate a heatsink.
            I was not ignoring your suggestion. In fact I purchased some 3.5" tube and have made molds for end-caps, for my next project, the Fulton Nautilus. I'll be sure to put in a large heatsink, when I pour one of the caps and see how that works.
            I'll drink to THAT!
            If the extra V-regulator in the T-class overheats, I'll modify it's end-cap also. As you say, it should be fairly easy to do. It's removing the tray assembly, that's attached to the other end-cap, that will be the problem. Since there's no space left on end-cap, for heatsink, that tray attaches to. Will need long wires going to regulator, with them clamped to end-cap, to prevent damage to V-reg. leads.
            Last edited by toppack; 04-27-2009, 04:08 PM.
            Rick L.
            --------------------------------------------
            * Asking Questions is a 'Good Thing',
            Since Learning is Always a 'Good Thing' *

            Comment

            • toppack
              Rear Admiral
              • Nov 2008
              • 1124

              #7
              I thought of another way to add a Heatsink to an existing endcap. Have one plate on inside of cap wall with V-regulator attached to it, another plate on outside of wall and attach the 2 plates, thru wall, with several large screws, thru threads tapped into wall for seal. The screws will conduct the heat from inside plate to the outside plate which is in contact with water.
              With no possibility of the heat loosening it, like a plug type modification might.

              Molding it into a endcap, as it's being made, is the best way, but this will be an easy way to modify one.
              Last edited by toppack; 05-01-2009, 12:09 PM.
              Rick L.
              --------------------------------------------
              * Asking Questions is a 'Good Thing',
              Since Learning is Always a 'Good Thing' *

              Comment

              • toppack
                Rear Admiral
                • Nov 2008
                • 1124

                #8
                In the above heatsink mod, the external plate can also be used for the external electrical-ground connection, since the mounting tab of the Voltage-regulator is also it's ground connection. (on most tab-mounted TO-220-package V-regs. it is)
                Last edited by toppack; 05-01-2009, 12:38 PM.
                Rick L.
                --------------------------------------------
                * Asking Questions is a 'Good Thing',
                Since Learning is Always a 'Good Thing' *

                Comment

                • Nuke Power
                  Banned
                  • Dec 2008
                  • 277

                  #9
                  I have never needed a heat sink what are you running that makes so much heat????

                  Comment

                  • toppack
                    Rear Admiral
                    • Nov 2008
                    • 1124

                    #10
                    Originally posted by Rogue Sub
                    I have never needed a heat sink what are you running that makes so much heat????
                    Presently I'm not having a problem that I know of, altho I noticed the extra V-reg. in forward WTC, with high-torque servos attached, is getting very Warm. I haven't run it enough to determine if it's going to be a problem or not, yet. I was planning ahead, to determine a good way to attach a heatsink if needed, plus I was informing others of my ideas on the subject, in the event anyone else had a problem.
                    Voltage-regulators and the heat they product was discussed extensively previously, somewhere on this website.
                    Last edited by toppack; 05-01-2009, 07:14 PM.
                    Rick L.
                    --------------------------------------------
                    * Asking Questions is a 'Good Thing',
                    Since Learning is Always a 'Good Thing' *

                    Comment

                    • Nuke Power
                      Banned
                      • Dec 2008
                      • 277

                      #11
                      Why are you spending your money on high torque servos????

                      Comment

                      • toppack
                        Rear Admiral
                        • Nov 2008
                        • 1124

                        #12
                        Originally posted by Rogue Sub
                        Why are you spending your money on high torque servos????
                        I needed them to pull triggers on my torpedo launch tubes, which has Strong springs to prevent accidental launch.
                        I determined the regulator heat was mainly caused by excessive current, caused by a jittery servo. The jittery servo has stopped now for some unexplained reason, but since I don't know what caused it, I don't know if it might return and cause an overheat problem on it's present smaller internal heatsink. (I tried different receiver and servos)
                        The jittery servo problem was fixed by just changing the 2 receiver channels being used (reversed usage of channels 5 & 6).
                        Last edited by toppack; 05-03-2009, 11:33 AM.
                        Rick L.
                        --------------------------------------------
                        * Asking Questions is a 'Good Thing',
                        Since Learning is Always a 'Good Thing' *

                        Comment

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