90 ton 1/14 metal excavator scratch build w/embedded PC

[SteinHDan]

Thanks, Joe! That means a lot, coming from you!


I've not seen the springiness in the stick before since I haven't been pushing anything hard, but it's caused by the combination of the 6kg gas spring and the backlash in the gears. When there is no load, the gas spring pushes the stick to hang on the gears. when the stick is pushing hard, it takes over and the stick is pushed by the gears. When lifting the arm up, the gas spring is free to push the stick back over the backlash and to have it hang on the gears again.

I think I'll try to just lower the force on the gas spring to get rid of this problem or make it less of a problem. I'll try with a 3kg gas spring first. I though bigger would be better, because the gas spring offsets the force to give the stick more pull force. But it doesn't need that, and it's causing this problem, so it should be smaller.


Best regards,
Stein :-)

[SteinHDan]

If someone is wondering why the excavator is standing on planks, then the reason is that I didn't want it to get dirt into every corner of the track when it's going right back onto my work bench.

Stein :-)