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250 belt to TT conversion

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  • #1

    250 belt to TT conversion

    Hi All.
    Ok so its a copterx 250 but fast becoming an align. The basic kit is ok but the head / swash was rubbish and the tail questionable.

    So its got a belt drive tail which I am not against. It just seems to be very tight. No idea how tight the belt should be its just as it came.

    Was thinking is there any benefit to changing to TT and is it a easy conversion ??

    Just seems to be a massive amount of friction in the belt. Struggles to get the head spinning almost stalls the motor but ones it starts seems ok.

    Cheers



    Goblin 700, Vbar Silverline, Savox SC-1267MG / SB-2272MG.Scorpion opto 130. Align 750mx /450kv
    Trex 500 EFL Pro, DFC, Vbar 5.3 Full Pro.
    CopterX 250 SE FBL, With Align upgrades and 3GX
    JR XG 7
    Mini CP, Heading for retirement.
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  • #2
    250 belt to TT conversion

    Check the belt for twists, I had a similar problem when I got my Trex 250, could barely turn the main rotors root cause was my belt being twisted

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    • #3
      Its difficult to get the right amount of belt tension is a matter of having the belt slack but not to the point where it may jump a tooth, however you can mod the belt to TT but would need every part from front TT gear to rear end & need to glue the tube into front frame.
      You can also use the new pro fbl head but will need to cut a bit of the swash links.
      Today's outlook is fine for flying.
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      • #4
        Originally posted by DaveJones View Post
        Check the belt for twists, I had a similar problem when I got my Trex 250, could barely turn the main rotors root cause was my belt being twisted
        No twists in the belt. I loosened up a bit was very tight. Flew this morning first time with the new head and using my JR radio. Still major issues with the tail. I put a separate post up. Have ordered a align tail to hopefully fix it. Standard one had a massive amount of play.



        Goblin 700, Vbar Silverline, Savox SC-1267MG / SB-2272MG.Scorpion opto 130. Align 750mx /450kv
        Trex 500 EFL Pro, DFC, Vbar 5.3 Full Pro.
        CopterX 250 SE FBL, With Align upgrades and 3GX
        JR XG 7
        Mini CP, Heading for retirement.

        Comment

        • #5
          Originally posted by tourerjim View Post
          Its difficult to get the right amount of belt tension is a matter of having the belt slack but not to the point where it may jump a tooth, however you can mod the belt to TT but would need every part from front TT gear to rear end & need to glue the tube into front frame.
          You can also use the new pro fbl head but will need to cut a bit of the swash links.
          Can you not get the TT tail box as well? Still not sure if there is any advantage going TT. The little guys touch the tail on the ground fairly easy so maybe belt is best. Just seems to have a lot of friction in it. I loosened off a bit so will see how it goes. Still sorting the tail

          Yeah I went for the 250 pro DFC head. I struggled to get the swash low enough. Had all the links in as hard as I could and still a tad long. Didnt think about cutting down. Might give that a go tonight and re set up. I ended up just triming the servo a tad to get 0 deg at mid stick. Guess trimming a couple mm off the link rods with the dermal would do it.

          Cheers



          Goblin 700, Vbar Silverline, Savox SC-1267MG / SB-2272MG.Scorpion opto 130. Align 750mx /450kv
          Trex 500 EFL Pro, DFC, Vbar 5.3 Full Pro.
          CopterX 250 SE FBL, With Align upgrades and 3GX
          JR XG 7
          Mini CP, Heading for retirement.

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