1/10 Mining Dump Truck

[Rvjimd]

I always enjoy seeing machine work photos, especially like seeing the work holding solutions. Jim

[pufferfish]

Drum Brakes.

some stainless sheet , 3mm thick, aluminium for the drums and some 6x1 stainless pipes



the square sheets are turning into round and welded together with the pipes



welded onto the joints


first tests. all things going well.





i need stops on the axles to prevent the drum from contact with the baseplate

a lack of suitable stainless washers forces me to made my own
small pieces of a 1mm sheet


turned together to the od


et voila


welded on position


in the their front , the drums has holes to hold two bearing and a spacer.
in the back the big hole for the brake pad holders


put on the axle, the drum fits well and has no contact. the double bearings are strong enough to avoid tilting.



A good start into this chapter.

[pufferfish]

Drum bakes: Brake pad holders.

aluminium round


simple method to hold the round parallel to the middle


sawed and milled


brass bolts


fitted with springs



set up





a little problem are the brake pads themself. after a lot of research i've found the tip that gasket paper (abil eg) was a pretty simple material



and really: it works perfect.

mocked up


next and last part: bowden cable and the mechanics to activate the breaks.