1/24 Scale Barrage Belt Drive Mod

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This is a belt drive mod for the 1/24 scale ECX barrage. The stock truck lacks the torque and low speed control to crawl. The stock gear ratio is 5:1, this mod will make it 10:1. Besides the 3D printed parts you will need a few #12 rubber bands and two bearings that have an OD of 8mm an ID of 3mm and a thickness of 4mm. This does not require any permanent mods to the truck.

Feel free to modify the design.
 
That's an interesting setup. Nice job!

To take that a step further, could you print a spur/pinion and possibly a mount to get yourself the same ratio, but with items that won't slip?
 
You would not be able to print a pinion or spur at the stock pitch. You could print gears with a larger pitch but that would make them bigger in diameter and hard/impossible to fit. It is probably possible to print a new gear box and stick in another gear for reduction. Another option would be to replace the rubber bands with miniature timing belts.
 

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