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Small 4:1 gearbox. Useful for hobby or teaching.Gadget
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Small 4:1 gearbox. Useful for hobby or teaching.
Materials and methods
All you need are two self tapping screws. I used 10mm long with a 6mm wide head. I also gave the gears and shafts a light greasing to stop them squeaking. Had it running nicely at over 4000rpm input so watch those fingers.
Have included a coupling that fits tight on a 2.3mm motor shaft and slips over the gearbox input shafts
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