1/10 Mining Dump Truck

[cooker2003]

Real drum brakes even! Impressive!

[pufferfish]

Thanks.

I need two different actuators for my breaks, like the big ones I need a driving and a parking brake.

But i won't two bowden cables. Therefor i've made a central platfrom between the frame. Later truly invisible.

A simple sledge to hold a constant direction. left to the actuators . right to the drums.


the testing arrangement was simple and ugly.

that must be prettier.

to get a weldeable bowden tube in my tiny sizes was impossible. so I've bought

a really small tube stainless

[pufferfish]

....
bending such a small tube
An inlay from 1mm brass rod was the solution
Bending worked wonderful smooth

but i need not a ring but four 90° parts.




inner deburring with a small ball end mill

and welding on the screw wich hold the axle onto the c-hub
to avoid length-changing while steering.


On the other side, a servo and a small n20 gear motor has taken their place.
together with two end switches for the motor, they are the rest of the mechanics.


A short clip of their work, you can see here