Roban - World Class Scale Helicopters

Tracks keep popping off

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  • rickjames84
    Member
    • Oct 2023
    • 18
    • South Carolina
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    #1

    Tracks keep popping off

    Took my new tank and I noticed; the metal tracks come off the sprockets. They are not loose; I was driving on grass not sure if that had to do with it.

    I am open for any suggestion.
  • SoCalBobS
    Senior Member

    • May 2020
    • 2736
    • Southern California
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    #2
    Two things I've learned: For larger tanks, the tracks should be snug - not tight, but not slack. Look at the alignment between the sprockets and the road wheels, You may need to place washers on the sprocket hubs to get them lined up.
    The more screws it takes to reassemble a tank, the more likely it is you left something out!

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    • rickjames84
      Member
      • Oct 2023
      • 18
      • South Carolina
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      #3
      Originally posted by SoCalBobS
      Two things I've learned: For larger tanks, the tracks should be snug - not tight, but not slack. Look at the alignment between the sprockets and the road wheels, You may need to place washers on the sprocket hubs to get them lined up.
      Thanks, I will definitely look and see if that's the issue.

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      • Evan D
        I'll fly anything

        • Jan 2016
        • 5398
        • Charlotte
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        #4
        What tank? Some are more prone than others. I had to do a lot of work to my Challenger II to make it reliable.

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        • keilau
          Senior Member

          • Mar 2021
          • 1838
          • Windy City
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          #5
          Originally posted by rickjames84
          Took my new tank and I noticed; the metal tracks come off the sprockets. They are not loose; I was driving on grass not sure if that had to do with it.

          I am open for any suggestion.
          You did not provide enough information for people to help. There is a lot of situation that can cause the tank to de-track. If the condition of the drive chain looks normal, adding a motor drive shaft metal housing with ball balling goes a long way to afford the perfect alignment. (The title of the seller's post is wrong.)
          https://www.ebay.com/itm/304158423618

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          • Rubicon99
            Senior Member

            • Dec 2019
            • 3315
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            #6
            Originally posted by rickjames84
            Took my new tank and I noticed; the metal tracks come off the sprockets. They are not loose; I was driving on grass not sure if that had to do with it.

            I am open for any suggestion.
            "Driving on grass" well that is a issues for even the most reliable running tanks. Depending on the length of grass most of us with experience try not to run on grass or when we do it is with bit more finesse when turning.

            As mentioned above help us out with what type of tank and if you are using metal or plastic tracks.

            Comment

            • rickjames84
              Member
              • Oct 2023
              • 18
              • South Carolina
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              #7
              Originally posted by Evan D
              What tank? Some are more prone than others. I had to do a lot of work to my Challenger II to make it reliable.
              Sorry it was the Heng Long Leopard 2A6 tank, with the metal tracks.

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              • rickjames84
                Member
                • Oct 2023
                • 18
                • South Carolina
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                #8
                Originally posted by keilau

                You did not provide enough information for people to help. There is a lot of situation that can cause the tank to de-track. If the condition of the drive chain looks normal, adding a motor drive shaft metal housing with ball balling goes a long way to afford the perfect alignment. (The title of the seller's post is wrong.)
                https://www.ebay.com/itm/304158423618
                It's the Heng Long Professional Edition Leopard 2A6 tank, with the metal tracks.

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                • rickjames84
                  Member
                  • Oct 2023
                  • 18
                  • South Carolina
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                  #9
                  Originally posted by Rubicon99

                  "Driving on grass" well that is a issues for even the most reliable running tanks. Depending on the length of grass most of us with experience try not to run on grass or when we do it is with bit more finesse when turning.

                  As mentioned above help us out with what type of tank and if you are using metal or plastic tracks.
                  Heng Long Professional Edition Leopard 2A6 tank I was using the metal tracks, I will try it out in my driveway and get more comfortable.

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                  • Rubicon99
                    Senior Member

                    • Dec 2019
                    • 3315
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                    #10
                    Originally posted by rickjames84

                    Heng Long Professional Edition Leopard 2A6 tank I was using the metal tracks, I will try it out in my driveway and get more comfortable.
                    Leopards are usually pretty good at track retention so I would guess it had to do more with your driving style then the tank. Got to go easy on the turning with long tanks like the heavy metal Leopards in grass because there are a lot of track end link openings (space between links) catching and holding the grass. This causes a rather substantial amount of sideways pulling force to be placed on the track which in turns pulls the track off the sprockets.

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                    • rickjames84
                      Member
                      • Oct 2023
                      • 18
                      • South Carolina
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                      #11
                      Originally posted by Rubicon99

                      Leopards are usually pretty good at track retention so I would guess it had to do more with your driving style then the tank. Got to go easy on the turning with long tanks like the heavy metal Leopards in grass because there are a lot of track end link openings (space between links) catching and holding the grass. This causes a rather substantial amount of sideways pulling force to be placed on the track which in turns pulls the track off the sprockets.
                      Thank you very much, so much to learn, i love learning.

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                      • SoCalBobS
                        Senior Member

                        • May 2020
                        • 2736
                        • Southern California
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                        #12
                        Originally posted by rickjames84

                        Heng Long Professional Edition Leopard 2A6 tank I was using the metal tracks, I will try it out in my driveway and get more comfortable.
                        Now that we know it's the HL Leopard, there's another issue I encountered, specifically with the metal sprocket and track version. For some reason the metal tracks are slightly wider than the plastic, by about 1.5mm. Not much, but enough for the links to be tight as they go around the sprocket. Coupled with R99's comment about grass or any other clingy surface producing side force, this can make the link ride up and detrack. I bought a set of plastic tracks and they are much more reliable than the metal.
                        The more screws it takes to reassemble a tank, the more likely it is you left something out!

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                        • rickjames84
                          Member
                          • Oct 2023
                          • 18
                          • South Carolina
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                          #13
                          Originally posted by SoCalBobS

                          Now that we know it's the HL Leopard, there's another issue I encountered, specifically with the metal sprocket and track version. For some reason the metal tracks are slightly wider than the plastic, by about 1.5mm. Not much, but enough for the links to be tight as they go around the sprocket. Coupled with R99's comment about grass or any other clingy surface producing side force, this can make the link ride up and detrack. I bought a set of plastic tracks and they are much more reliable than the metal.
                          I was thinking of getting the plastic tracks, also i kinda noticed something out of the ordinary the track that kept popping off the tension seems off or the track in longer than the left side.

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                          • SoCalBobS
                            Senior Member

                            • May 2020
                            • 2736
                            • Southern California
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                            #14
                            Originally posted by rickjames84

                            I was thinking of getting the plastic tracks, also i kinda noticed something out of the ordinary the track that kept popping off the tension seems off or the track in longer than the left side.
                            Yeah, that’s where it shows up the most. Couldn’t hurt to buy the plastic tracks. You can always switch back and forth. Also, if you have the metal tracks with the rubber shoes, those will be falling off on occasion.
                            The more screws it takes to reassemble a tank, the more likely it is you left something out!

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                            • rickjames84
                              Member
                              • Oct 2023
                              • 18
                              • South Carolina
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                              #15
                              Originally posted by SoCalBobS

                              Yeah, that’s where it shows up the most. Couldn’t hurt to buy the plastic tracks. You can always switch back and forth. Also, if you have the metal tracks with the rubber shoes, those will be falling off on occasion.
                              I will, comes the task of learning how to replace the track.

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                              • SoCalBobS
                                Senior Member

                                • May 2020
                                • 2736
                                • Southern California
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                                #16
                                I do it by unscrewing the idler. Once it’s unscrewed and pulled off there’s enough slack to take the track off the sprocket. Of course, on a tank with skirts the top has to be lifted off too.
                                The more screws it takes to reassemble a tank, the more likely it is you left something out!

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                                • emirt
                                  Member
                                  • Sep 2022
                                  • 1
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                                  #17
                                  Originally posted by rickjames84

                                  It's the Heng Long Professional Edition Leopard 2A6 tank, suika game with the metal tracks.
                                  Have you noticed its problem yet?

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