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  4. Ypvs servo motor

Ypvs servo motor

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  • S Offline
    S Offline
    SpookDog
    wrote on last edited by
    #4

    Can you please let me know how you get on? It’d be handy to know a replacement number for the 3wire servo motor. Also pics and dimensions of the nylon cog inside that I hear always wears out, would be sweet...

    A 1 Reply Last reply
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    • S SpookDog

      Can you please let me know how you get on? It’d be handy to know a replacement number for the 3wire servo motor. Also pics and dimensions of the nylon cog inside that I hear always wears out, would be sweet...

      A Offline
      A Offline
      Arild
      wrote on last edited by
      #5

      @SpookDog the servo for the 3 wire ypvs is just a regular two wire dc motor, the only thing u need is dimensions for the motor and make sure the pinion gear fits, i havent found one yet close to me soley for the fact that im not willing to pay 20 pounds shipping for a tiny little dc motor that cost me 3 quid, i live in sweden so shipping is expensive to here
      I have no clue about the plastic gear honestly, i can have a look whenever i get back to my garage because im currently away and not able to go in the garage
      I saw some guy mount his servo straight to the powervalve and skip all the cables etc once, maybe that way u skip breaking cogs?

      declanD 1 Reply Last reply
      0
      • A Arild

        @SpookDog the servo for the 3 wire ypvs is just a regular two wire dc motor, the only thing u need is dimensions for the motor and make sure the pinion gear fits, i havent found one yet close to me soley for the fact that im not willing to pay 20 pounds shipping for a tiny little dc motor that cost me 3 quid, i live in sweden so shipping is expensive to here
        I have no clue about the plastic gear honestly, i can have a look whenever i get back to my garage because im currently away and not able to go in the garage
        I saw some guy mount his servo straight to the powervalve and skip all the cables etc once, maybe that way u skip breaking cogs?

        declanD Offline
        declanD Offline
        declan
        wrote on last edited by
        #6

        @Arild he did that on a dt?

        A 1 Reply Last reply
        0
        • declanD declan

          @Arild he did that on a dt?

          A Offline
          A Offline
          Arild
          wrote on last edited by
          #7

          @declan
          This guy
          https://www.youtube.com/watch?v=eaTZ9dXpuQA

          He also tried turbo charging his dtr, dont know where he got with that tho

          declanD 1 Reply Last reply
          0
          • A Arild

            @declan
            This guy
            https://www.youtube.com/watch?v=eaTZ9dXpuQA

            He also tried turbo charging his dtr, dont know where he got with that tho

            declanD Offline
            declanD Offline
            declan
            wrote on last edited by
            #8

            @Arild ha that’s pretty cool

            A 1 Reply Last reply
            0
            • declanD declan

              @Arild ha that’s pretty cool

              A Offline
              A Offline
              Arild
              wrote on last edited by
              #9

              @declan
              Yeah its a cool concept but i dont really see why u would do that, looks weird on the bike aswell to just have a big black box next to the cylinder

              1 Reply Last reply
              1
              • G Offline
                G Offline
                GeirA
                wrote on last edited by
                #10

                These motors are simple DC 385 motors and cost next to nothing from sites like AliExpress, Ebay and Amazon.
                Just Google "385 DC motor" and you will get a lot of hits. They usually come with different voltage and rpm-ratings. So buy a few and try which one works the best. It should also be fairly easy to work out the rpms too by doing some simple math.

                Please post which motor that worked best 🙂

                The YPVS is quite simple a servo motor that works just like model airplane servos. As far as I know, the YPVS use 12V supply voltage and 4,9V PWM pulse signal.

                A G 2 Replies Last reply
                0
                • G GeirA

                  These motors are simple DC 385 motors and cost next to nothing from sites like AliExpress, Ebay and Amazon.
                  Just Google "385 DC motor" and you will get a lot of hits. They usually come with different voltage and rpm-ratings. So buy a few and try which one works the best. It should also be fairly easy to work out the rpms too by doing some simple math.

                  Please post which motor that worked best 🙂

                  The YPVS is quite simple a servo motor that works just like model airplane servos. As far as I know, the YPVS use 12V supply voltage and 4,9V PWM pulse signal.

                  A Offline
                  A Offline
                  Arild
                  wrote on last edited by Arild
                  #11

                  @GeirA
                  Hey yeah, my first instinct was to go on ebay and aliexpress, then i remembered that sweden has fees from taking packages outside of europe, so every 1 quid dc motor would end up around 10 quid each because of customs etc, and not to mention the fact that it takes a long time for them to arrive
                  I dont know how dc motors work, i would think that the most important part is the torque it produces, but im not too sure
                  But thanks for letting me know that its called a 835 dc motor specifically, easier to find what im searching for now

                  G 1 Reply Last reply
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                  • Stevie WonderS Offline
                    Stevie WonderS Offline
                    Stevie Wonder
                    wrote on last edited by Stevie Wonder
                    #12

                    Hang on, hang on, hold up a minute...
                    Are you telling me we could upgrade the servo motor to improve the servo’s responsiveness across the rpm range?

                    Aye, I might have missed something but I can’t have been the only one to think it moves like it’s got arthritis

                    A 1 Reply Last reply
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                    • Stevie WonderS Stevie Wonder

                      Hang on, hang on, hold up a minute...
                      Are you telling me we could upgrade the servo motor to improve the servo’s responsiveness across the rpm range?

                      Aye, I might have missed something but I can’t have been the only one to think it moves like it’s got arthritis

                      A Offline
                      A Offline
                      Arild
                      wrote on last edited by
                      #13

                      @Stevie-Wonder
                      Thats my guess, but at the same time the bike doesnt jump from 4k to 10k in an instant, so i dont really think u need some ultra super dc torque monster electrical motor, i think its just fine with a normal one, or the original but just maybe with some new brushes which u can find on ebay

                      Stevie WonderS 1 Reply Last reply
                      0
                      • A Arild

                        @Stevie-Wonder
                        Thats my guess, but at the same time the bike doesnt jump from 4k to 10k in an instant, so i dont really think u need some ultra super dc torque monster electrical motor, i think its just fine with a normal one, or the original but just maybe with some new brushes which u can find on ebay

                        Stevie WonderS Offline
                        Stevie WonderS Offline
                        Stevie Wonder
                        wrote on last edited by
                        #14

                        @Arild Yes I agree and it’s not that it’s doing a bad job, I just saw the way the servo shits the bed if you’re quick on the throttle above 7-8k rpm and thought hmm I wonder if that could be improved and what difference it’d make.

                        Ps I’m in two mind about my own comment because in real life riding scenarios you should never be choppy with the throttle when riding a two stroke. All or nothing, it’s your responsibility to work the bike like an instrument to keep it singing in its sweet spot

                        A 1 Reply Last reply
                        0
                        • Stevie WonderS Stevie Wonder

                          @Arild Yes I agree and it’s not that it’s doing a bad job, I just saw the way the servo shits the bed if you’re quick on the throttle above 7-8k rpm and thought hmm I wonder if that could be improved and what difference it’d make.

                          Ps I’m in two mind about my own comment because in real life riding scenarios you should never be choppy with the throttle when riding a two stroke. All or nothing, it’s your responsibility to work the bike like an instrument to keep it singing in its sweet spot

                          A Offline
                          A Offline
                          Arild
                          wrote on last edited by
                          #15

                          @Stevie-Wonder
                          Yeah could probably be improved, could start by opening the motor u have urself and see how it looks, mine was the definition of shit the bed, it could most likely have a small refresh and work great, otherwise u can buy the same size motors but that have way more torque and rpm and i guess that is the important part for ypvs

                          1 Reply Last reply
                          0
                          • G GeirA

                            These motors are simple DC 385 motors and cost next to nothing from sites like AliExpress, Ebay and Amazon.
                            Just Google "385 DC motor" and you will get a lot of hits. They usually come with different voltage and rpm-ratings. So buy a few and try which one works the best. It should also be fairly easy to work out the rpms too by doing some simple math.

                            Please post which motor that worked best 🙂

                            The YPVS is quite simple a servo motor that works just like model airplane servos. As far as I know, the YPVS use 12V supply voltage and 4,9V PWM pulse signal.

                            G Offline
                            G Offline
                            GeirA
                            wrote on last edited by
                            #16

                            @GeirA said in Ypvs servo motor:

                            The YPVS is quite simple a servo motor that works just like model airplane servos. As far as I know, the YPVS use 12V supply voltage and 4,9V PWM pulse signal.

                            I have researched a bit more and found that I have mistaken the pulse signal for being PWM. It's probably the rpm signal, not PWM.

                            1 Reply Last reply
                            0
                            • A Arild

                              @GeirA
                              Hey yeah, my first instinct was to go on ebay and aliexpress, then i remembered that sweden has fees from taking packages outside of europe, so every 1 quid dc motor would end up around 10 quid each because of customs etc, and not to mention the fact that it takes a long time for them to arrive
                              I dont know how dc motors work, i would think that the most important part is the torque it produces, but im not too sure
                              But thanks for letting me know that its called a 835 dc motor specifically, easier to find what im searching for now

                              G Offline
                              G Offline
                              GeirA
                              wrote on last edited by
                              #17

                              @Arild Isn't Sweden an EU-country? I live in Norway and there are virtually no extra fees ordering from China or other countries, at least when ordering stuff worth less than 300NOK (about £25). And Norway isn't even EU. That's strange.

                              But you could try to search for hobby stores in Sweden at the web. Some stores might have a 385 motor. As I mentioned, it's an ordinary hobby motor.

                              A 1 Reply Last reply
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                              • S Offline
                                S Offline
                                SpookDog
                                wrote on last edited by
                                #18

                                @Stevie-Wonder
                                I’m sure you’re thinking of it stationary, when power isn’t really an issue. When you’re in most gears and accelerating it moves fast enough. I understand where you’re thinking is coming from though...

                                1 Reply Last reply
                                0
                                • G GeirA

                                  @Arild Isn't Sweden an EU-country? I live in Norway and there are virtually no extra fees ordering from China or other countries, at least when ordering stuff worth less than 300NOK (about £25). And Norway isn't even EU. That's strange.

                                  But you could try to search for hobby stores in Sweden at the web. Some stores might have a 385 motor. As I mentioned, it's an ordinary hobby motor.

                                  A Offline
                                  A Offline
                                  Arild
                                  wrote on last edited by
                                  #19

                                  @GeirA
                                  Idk why sweden has done it they way they have but basically postnord, which takes care of the packages as soon as they enter sweden, take 70kr just to handle the package, and then they also take 10% of what the package was worth and add it onto the 70kr, so even the smallest things end up expensive, except if u order from wish, since wish takes care of the fees but shipping from wish is always around 70kr anyway, so there is no real good way of buyinf chinese things into sweden anymore

                                  1 Reply Last reply
                                  1
                                  • Louis-DT-WRL Offline
                                    Louis-DT-WRL Offline
                                    Louis-DT-WR
                                    wrote on last edited by
                                    #20

                                    The way the guy in the video has done it would make the valve not operate correctly.

                                    The pulley on the motor is not the same size as the plastic pulley on the cylinder.... It's changed the rotary parameter and timing.

                                    Also I'm pretty sure it would be running backwards as the servo is now facing the cylinder.

                                    A 1 Reply Last reply
                                    0
                                    • Louis-DT-WRL Louis-DT-WR

                                      The way the guy in the video has done it would make the valve not operate correctly.

                                      The pulley on the motor is not the same size as the plastic pulley on the cylinder.... It's changed the rotary parameter and timing.

                                      Also I'm pretty sure it would be running backwards as the servo is now facing the cylinder.

                                      A Offline
                                      A Offline
                                      Arild
                                      wrote on last edited by
                                      #21

                                      @Louis-DT-WR
                                      Yeah that would make sense, might be fixable with a zeeltronic though?

                                      1 Reply Last reply
                                      0
                                      • CalumC Online
                                        CalumC Online
                                        Calum
                                        wrote on last edited by
                                        #22

                                        It may be possible with the zeel.

                                        If it's running backwards then you'd need to invert the pulleys.

                                        Then use the zeel to alter when it opens and closes, if necessary don't make it 100% open. It may still feel "off" and not give that YPVS feel.

                                        Always Originate, Never Pirate!

                                        A 1 Reply Last reply
                                        0
                                        • CalumC Calum

                                          It may be possible with the zeel.

                                          If it's running backwards then you'd need to invert the pulleys.

                                          Then use the zeel to alter when it opens and closes, if necessary don't make it 100% open. It may still feel "off" and not give that YPVS feel.

                                          A Offline
                                          A Offline
                                          Arild
                                          wrote on last edited by
                                          #23

                                          @Calum
                                          Yeah,i wouldnt do it myself tho, he has another video where u can see the servo on the powervalve and it just looks out of place right on the cylinder

                                          1 Reply Last reply
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