will this combo work out mathmaticaly

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • CraigP
    Fast Electric Addict!
    • May 2017
    • 1464

    #76
    The installation looks good enough. Just two things, the prop must be razor sharp, sharpened from the backside, not the thrust side. If you have removed material from the thrust face, then they will cavitation badly. Been there, done that. Also, I couldn’t make the TP motor work well at all on voltage higher than 4s. If you have another motor to try, do that.

    Comment

    • TRUCKPULL
      Fast Electric Addict!
      • Apr 2007
      • 2969

      #77
      What wind is your motor "Y" or a "D"
      Is the speed control programed to match the motor?

      Larry
      Past NAMBA- P Mono -1 Mile Race Record holder
      Past NAMBA- P Sport -1 Mile Race Record holder
      Bump & Grind Racing Props -We Like Em Smooth & Wet

      Comment

      • Crash
        Senior Member
        • Oct 2015
        • 313

        #78
        Originally posted by TRUCKPULL
        What wind is your motor "Y" or a "D"
        Is the speed control programed to match the motor?

        Larry
        its a Y

        Comment

        • Crash
          Senior Member
          • Oct 2015
          • 313

          #79
          Originally posted by Speed3
          That looks like the voracity, They is a wealth of info on the voracity turning thread about it. I would recommend going to the voracity turning thread in the rtr section on this forum.

          I have learned that you need a good battery to get the tp to perform to its potential. Also the soldering has to be good at all points. Solder flowing through the wire like water before letting dry.

          And if you are reving 30krpm plus and only doing 46mph I can tell the prop is not operating efficient enough to get the speed you want at 30krpm.
          the only weak link I sense is at the motor leads. they are a coarse heavy wire and didn't solder as nice as any wire I have done in the past. also , the hot spot in set up are those wires. 189F

          Comment

          • Crash
            Senior Member
            • Oct 2015
            • 313

            #80
            Originally posted by CraigP
            The installation looks good enough. Just two things, the prop must be razor sharp, sharpened from the backside, not the thrust side. If you have removed material from the thrust face, then they will cavitation badly. Been there, done that. Also, I couldn’t make the TP motor work well at all on voltage higher than 4s. If you have another motor to try, do that.
            I don't do my own props , I get them sharp n balanced or cnc milled.

            I have a 1650 kv I took out of this boat to run. I am curiuos if I can get more speed from a lower KV motor on same props

            Comment

            • TRUCKPULL
              Fast Electric Addict!
              • Apr 2007
              • 2969

              #81
              Originally posted by Crash
              its a Y
              what is your timing set at??

              What is exactly your setup right now.

              HULL - type, material, and length.
              Motor - size. KV, Y or D wind?
              ESC- type and size - is it programed to match the motor?
              6S- 8S ??? - one or two p , make ,C rating , max C rating. mAP rating.

              Prop - make, size, modifications,?????


              Each one the above questions will make a difference for a balanced system.


              Larry
              Last edited by TRUCKPULL; 08-17-2018, 10:37 PM.
              Past NAMBA- P Mono -1 Mile Race Record holder
              Past NAMBA- P Sport -1 Mile Race Record holder
              Bump & Grind Racing Props -We Like Em Smooth & Wet

              Comment

              • Crash
                Senior Member
                • Oct 2015
                • 313

                #82
                Originally posted by TRUCKPULL
                what is your timing set at??

                What is exactly your setup right now.

                HULL - type, material, and length.
                Motor - size. KV, Y or D wind?
                ESC- type and size - is it programed to match the motor?
                6S- 8S ??? - one or two p , make ,C rating , max C rating. mAP rating.

                Prop - make, size, modifications,?????


                Each one the above questions will make a difference for a balanced system.


                Larry
                Its. 36 inch FG MONO PROBOAT
                220 AMP ESC SWORDFISH set to 6s
                To power 4060 3y 1750kv
                Two 3s lipo 50c 6000mah
                Stainless propeller 545 sharp n balanced

                Comment

                • CraigP
                  Fast Electric Addict!
                  • May 2017
                  • 1464

                  #83
                  Originally posted by Crash
                  I don't do my own props , I get them sharp n balanced or cnc milled.

                  I have a 1650 kv I took out of this boat to run. I am curiuos if I can get more speed from a lower KV motor on same props
                  Try that 1650 motor. I bet that TP is pulling down your electrical system. Broke my heart to have to pull my TP out, but I couldn’t even get thru turn 1 without it hitting thermal limit. Changed motor, all was golden! And now my beautiful TP motor sits in a box...

                  Comment

                  • Speed3
                    Senior Member
                    • Mar 2017
                    • 371

                    #84
                    Your tp motor leads got that to 189f because the soldering was purely done. It should be cool with that setup.

                    You are losing alot of power because of it.

                    I use lead tin solder with flux and solder over fire for my motor connectors. When I solder even d wind motors run cool at 15 degree timing. I don't run circuit though so I expect some running circuit to run hot. But my connectors does feel the same after I come in as before I went out.

                    When your connectors are cool that's a sign you are getting full power. Also I think your batteries are falling off too hard. Or maybe the cells are not that good in the first place.

                    I does measure the internal resistance of my batteries. That is check for voltage loss at a known load ampage. The best pack I have is a smc 5400 90c 4s.

                    It measures .005 ohms total for a 4s. That translate to 1.25 voltage drop at 250 amps. For 6s in those cells the internal resistance would be .0075 total or 1.875 voltage drop at 250 amps.

                    So if you start off at let's say 25volts for the 6s the voltage would drop to 23.125v initially at 250 amps. And you posted that your volts was 19.6v that's a big difference.

                    And if you get it setup right the speed gain will have you amazed. That tp will unleash so power I wonder if the drive will take it.

                    I have a tp 4060 1950kv I tried it on 5s one time I couldn't get a good run with my revolt. I was using an ose upgraded shaft for the revolt and an octura collet coupler. Well the power was so insane, no matter how tight I tighten the couple when I squeeze the shaft would slip. Too much power. Well it kill the shaft that same day an upgraded shaft.

                    My I have the same problem with the leopard 4092 but the tp 4060 is a little more powerful than the leopard 4092 but you will never know about this kind of power without proper batteries and a proper solder connection across all points.

                    One more thing the solder should flow through all the end of the wire like how flux can flow through it should look like silver water through the wire. Before you let it dry.

                    Comment

                    • Crash
                      Senior Member
                      • Oct 2015
                      • 313

                      #85
                      Originally posted by Speed3
                      Your tp motor leads got that to 189f because the soldering was purely done. It should be cool with that setup.

                      You are losing alot of power because of it.

                      I use lead tin solder with flux and solder over fire for my motor connectors. When I solder even d wind motors run cool at 15 degree timing. I don't run circuit though so I expect some running circuit to run hot. But my connectors does feel the same after I come in as before I went out.

                      When your connectors are cool that's a sign you are getting full power. Also I think your batteries are falling off too hard. Or maybe the cells are not that good in the first place.

                      I does measure the internal resistance of my batteries. That is check for voltage loss at a known load ampage. The best pack I have is a smc 5400 90c 4s.

                      It measures .005 ohms total for a 4s. That translate to 1.25 voltage drop at 250 amps. For 6s in those cells the internal resistance would be .0075 total or 1.875 voltage drop at 250 amps.

                      So if you start off at let's say 25volts for the 6s the voltage would drop to 23.125v initially at 250 amps. And you posted that your volts was 19.6v that's a big difference.

                      And if you get it setup right the speed gain will have you amazed. That tp will unleash so power I wonder if the drive will take it.

                      I have a tp 4060 1950kv I tried it on 5s one time I couldn't get a good run with my revolt. I was using an ose upgraded shaft for the revolt and an octura collet coupler. Well the power was so insane, no matter how tight I tighten the couple when I squeeze the shaft would slip. Too much power. Well it kill the shaft that same day an upgraded shaft.

                      My I have the same problem with the leopard 4092 but the tp 4060 is a little more powerful than the leopard 4092 but you will never know about this kind of power without proper batteries and a proper solder connection across all points.

                      One more thing the solder should flow through all the end of the wire like how flux can flow through it should look like silver water through the wire. Before you let it dry.
                      Thank you.
                      I ran it yesterday for 3 sets. Of packs, o. The last run 2 of The three motor wires came unsoldered.
                      Back to the work bench.
                      I really thought I had this soldering game figured out.

                      Comment

                      • CraigP
                        Fast Electric Addict!
                        • May 2017
                        • 1464

                        #86
                        You need a 60W iron with at least a 1/4” chisel solder bit to get enough heat to fully penetrate all wire strands. Soldering flux is also very helpful, get it at Lowe’s or similar.

                        But this is still a sign that you are flowing a massive amount of current. I’ll say it again, that TP motor is probably going into saturation.

                        Comment

                        • StevenBryant
                          Senior Member
                          • Nov 2012
                          • 359

                          #87
                          Time to upgrade your connectors, I use Lehner 6mm 400amp connectors and castle 8mm 300amp connectors on most of my setups, I used to have the same problem as you until I upgraded


                          Sent from my iPhone using Tapatalk

                          Comment

                          • Crash
                            Senior Member
                            • Oct 2015
                            • 313

                            #88
                            Originally posted by CraigP
                            I’ll say it again, that TP motor is probably going into saturation.
                            whats that mean?

                            Comment

                            • Crash
                              Senior Member
                              • Oct 2015
                              • 313

                              #89
                              so, I went back and resoldered all the conections.
                              the motor wires are still getting hot 198 F today

                              Comment

                              • StevenBryant
                                Senior Member
                                • Nov 2012
                                • 359

                                #90
                                Originally posted by Crash
                                so, I went back and resoldered all the conections.
                                the motor wires are still getting hot 198 F today
                                What connnectors are you using?


                                Sent from my iPhone using Tapatalk

                                Comment

                                Working...