Roban - World Class Scale Helicopters

“Junk / Scrap” yard M4 Sherman build.

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  • Rubicon99
    Senior Member

    • Dec 2019
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    #21
    Originally posted by DavidN
    My T34/85 is the customized late 7.0 version and I don't see any idler adjuster in it. As you can see from the picture, my tracks don't touch the top wheels per your advice. They seem quite tight. Should I add in the 2 links? It came from Toucan that way though.

    For my king tiger, I bought an old static tank and converted it into RC. So it doesn't have the idler adjuster also. I will apply the method on the KT then.

    Click image for larger version

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    Remove the front idler wheel. The wheels rides on an axle attached to the adjusters.

    Unscrew lift up out and move forward or backwards to loosen or tighten track. Then screw down the idler adjusters to lock them into place and reinstalled the wheel.

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    • DavidN
      Senior Member

      • May 2021
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      #22
      I will work on the idlers tonight. I learn so much today
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      • DavidN
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        • May 2021
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        #23
        Originally posted by Rubicon99

        Remove the front idler wheel. The wheels rides on an axle attached to the adjusters.

        Unscrew lift up out and move forward or backwards to loosen or tighten track. Then screw down the idler adjusters to lock them into place and reinstalled the wheel.
        Done. 10 minute work. The tank now looks much better. I am tankful :-)
        SoCal RC Tank Club Facebook Group
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        • Rubicon99
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          • Dec 2019
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          #24
          Originally posted by DavidN

          Done. 10 minute work. The tank now looks much better. I am tankful :-)
          Its easier to do then to explain. Glad it worked out for you. Now let’s see some photos!!!!

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          • DavidN
            Senior Member

            • May 2021
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            #25
            Here it is. Before and after

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            SoCal RC Tank Club Facebook Group
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            Gathering 1-2x monthly/All Ages & Experience levels welcome​

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            • Rubicon99
              Senior Member

              • Dec 2019
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              #26
              Originally posted by DavidN
              Here it is. Before and after

              Click image for larger version

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              Much nicer in the after photo.

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              • Rubicon99
                Senior Member

                • Dec 2019
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                #27
                Some screen shots from testing of Mato T49 metal tracks on Heng Long M4 Sherman (“Russian Firefly” theme) for performance and reliability. Video of testing is on my Instagram @ fsttanks
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                • DavidN
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                  • May 2021
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                  #28
                  So nice. I will paint my next Sherman similar to yours :-)
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                  • DavidN
                    Senior Member

                    • May 2021
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                    #29
                    So nice. I will paint my next Sherman similar to yours :-)
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                    Gathering 1-2x monthly/All Ages & Experience levels welcome​

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                    • DavidN
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                      • May 2021
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                      #30
                      Originally posted by Rubicon99

                      It is a “Firefly” barrel I bought from Toucan hobbies off EBay. Like the “Fury” (panther) barrel it is too long so I cut it down to the correct length. Which is approx 6.5” (provided by Rich Johnson) or approx double the length of the stock gun from mantle face “pass through” to where the brake attaches (the muzzle brake is not part of the 6.5” measurement).

                      Note: The barrel is aluminum and the brake is integral with the rest of the barrel so it has to be cut off and reattach once the barrel is shortened.
                      Is this the same barrel that you bought from Toucan? I want to replace the barrel on my Sherman that Rich stated it had the German muzzle brake. This one has the right muzzle brake, correct? And I can cut it down to 6.5 inches. Thank you!

                      https://www.ebay.com/itm/32478130848...3ABFBMpoXMo6pf
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                      • Rubicon99
                        Senior Member

                        • Dec 2019
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                        #31
                        Originally posted by DavidN

                        Is this the same barrel that you bought from Toucan? I want to replace the barrel on my Sherman that Rich stated it had the German muzzle brake. This one has the right muzzle brake, correct? And I can cut it down to 6.5 inches. Thank you!

                        https://www.ebay.com/itm/32478130848...3ABFBMpoXMo6pf
                        Yes that is the one I have. I shortened mine though as it is a bit to long as supplied.

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                        • DavidN
                          Senior Member

                          • May 2021
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                          #32
                          Got it! Thank you!
                          SoCal RC Tank Club Facebook Group
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                          Gathering 1-2x monthly/All Ages & Experience levels welcome​

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                          • Rubicon99
                            Senior Member

                            • Dec 2019
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                            #33
                            For those of you that asked about the Mato T49 “duck bill” tracks I am using on this tank. Here are some close up photos.

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                            • Rubicon99
                              Senior Member

                              • Dec 2019
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                              #34
                              A few more tweaks to this build. I added different turret track armor that matches the main running tracks. I think it gives the turret a heavier look.

                              Heng Long M4 in “Russian Firefly” like theme.
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                              Attached Files

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                              • DavidN
                                Senior Member

                                • May 2021
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                                #35
                                Originally posted by Rubicon99

                                It is a “Firefly” barrel I bought from Toucan hobbies off EBay. Like the “Fury” (panther) barrel it is too long so I cut it down to the correct length. Which is approx 6.5” (provided by Rich Johnson) or approx double the length of the stock gun from mantle face “pass through” to where the brake attaches (the muzzle brake is not part of the 6.5” measurement).

                                Note: The barrel is aluminum and the brake is integral with the rest of the barrel so it has to be cut off and reattach once the barrel is shortened.
                                The barrel arrived. I just want to make sure I do it correctly. I should measure 6.5 inches from the red arrow and cut it. I should also cut off the muzzle brake at the green arrow and reattach it to where the 6.5 cut off is. Correct? Thank you!

                                Click image for larger version

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                                SoCal RC Tank Club Facebook Group
                                Largest active RC Tank club in Southern California
                                Gathering 1-2x monthly/All Ages & Experience levels welcome​

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                                • Rubicon99
                                  Senior Member

                                  • Dec 2019
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                                  #36
                                  Originally posted by DavidN

                                  The barrel arrived. I just want to make sure I do it correctly. I should measure 6.5 inches from the red arrow and cut it. I should also cut off the muzzle brake at the green arrow and reattach it to where the 6.5 cut off is. Correct? Thank you!

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                                  If the red arrow is the point where the barrel meets/clears the mantle then yes. I would cut the muzzle brake off first as it is easier to do when attached to a longer section on the barrel.

                                  6.5” is a close approximation for a Sherman Firefly(mine is not a true Sherman Firefly and I took liberty with how it looks). The actual Sherman Firefly barrel was roughly twice the length of the standard 75mm gun and just slightly longer then the later “EZ8” 76 mm gun. So if it ends up slightly shorter or slightly longer it will IMO still look more proportionally balanced and overall better looking then the length provided.

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                                  • DavidN
                                    Senior Member

                                    • May 2021
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                                    • Los Angeles, CA
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                                    #37
                                    Originally posted by Rubicon99

                                    If the red arrow is the point where the barrel meets/clears the mantle then yes. I would cut the muzzle brake off first as it is easier to do when attached to a longer section on the barrel.

                                    6.5” is a close approximation for a Sherman Firefly(mine is not a true Sherman Firefly and I took liberty with how it looks). The actual Sherman Firefly barrel was roughly twice the length of the standard 75mm gun and just slightly longer then the later “EZ8” 76 mm gun. So if it ends up slightly shorter or slightly longer it will IMO still look more proportionally balanced and overall better looking then the length provided.
                                    I was trying to be lazy and wanted to cut it off first. Now since you mentioned it, I will play around with it. I will install it into the mantle to see how it looks. Then make a mark of where it clears the mantle and go from there. I will also check on the 75mm gun and double its length for more confirmation. Many thanks!

                                    SoCal RC Tank Club Facebook Group
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                                    • Rubicon99
                                      Senior Member

                                      • Dec 2019
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                                      #38
                                      Little update on this project. Although everything has been running reliably the tank has a noticeable “wobble” when driving at lower speeds on flat ground. The cause is largely due to the drive axles shaft being slightly bent.

                                      So instead of ordering new shafts I went ahead a ordered entirely new gearboxes. The new boxes are HLs “premium” ones. I have never been a huge fan of them and prefer the “black” Taigen boxes more, but I couldn’t pass up the sale price on them.

                                      Once installed, the tracks back on and everything “buttoned up” it was off to testing. The wobble still remains but it was greatly reduced. The tank now has better low speed/power torque then the standard “silver can” gearboxes had, an added plus of the “blue” motors that came with the new gearboxes.

                                      The slight wobble that remains is associated with the sprocket to track fit and the slight misalignment of the Mato rear idlers that are randomly catching the track teeth. It’s now such a minor issues that I am not going to chase the “rabbit” trying to sort it out further.

                                      Stock gearboxes: Click image for larger version  Name:	6A2C73C6-E6CF-4CAB-BD7C-C0FAF679799A.jpeg Views:	0 Size:	84.8 KB ID:	333316

                                      Heng Long “premium” gearboxes: Click image for larger version  Name:	98B24875-1838-4032-96C3-D771083935EB.jpeg Views:	0 Size:	65.0 KB ID:	333315

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                                      • DavidN
                                        Senior Member

                                        • May 2021
                                        • 3189
                                        • Los Angeles, CA
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                                        #39
                                        Originally posted by Rubicon99
                                        Little update on this project. Although everything has been running reliably the tank has a noticeable “wobble” when driving at lower speeds on flat ground. The cause is largely due to the drive axles shaft being slightly bent.

                                        So instead of ordering new shafts I went ahead a ordered entirely new gearboxes. The new boxes are HLs “premium” ones. I have never been a huge fan of them and prefer the “black” Taigen boxes more, but I couldn’t pass up the sale price on them.

                                        Once installed, the tracks back on and everything “buttoned up” it was off to testing. The wobble still remains but it was greatly reduced. The tank now has better low speed/power torque then the standard “silver can” gearboxes had an added plus of the “blue” motors that came with the new gearboxes.

                                        The slight wobble that remains is associated with the sprocket to track fit and the slight misalignment of the Mato rear idlers that are randomly catching the track teeth. It’s now such a minor issues that I am not going to chase the “rabbit” trying to sort it out further.
                                        A sale on Premium gearboxes? If you don't mind, please let me know where! Thank you!
                                        SoCal RC Tank Club Facebook Group
                                        Largest active RC Tank club in Southern California
                                        Gathering 1-2x monthly/All Ages & Experience levels welcome​

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                                        • Rubicon99
                                          Senior Member

                                          • Dec 2019
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                                          #40
                                          Originally posted by DavidN

                                          A sale on Premium gearboxes? If you don't mind, please let me know where! Thank you!
                                          Sale is long since over.

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