JBC limited NZ

[Lil Giants]

Your screening holes prior to the crusher, I've discovered the fines help move the chunks around in the box, constantly changing the bite of the jaws. Sometimes chunks lodge & stay in one position, then the jaw pivots on that one chunk, not breaking it any further.

O rings for belts... to drive your crusher? Won't last very long, they stretch too easily. Cog belt or V belt with steel in it.

[andyathome]

I have been told the same about the fines shute.
we have a guy at work who used to repair them in South Africa and he suggested a sliding mech under the hopper slots that I can adjust to suit the material im crushing and that the shute must be full to work properly. And apparently it needs to lift the rocks on the jaws when crushing other wise they will jam in place.
I do intend to use a toothed or a vee belt but I had the seals ( o rings ) lying around so for initial testing and a zero budget they will have to do for a couple of weeks.
this has been a bit of a learning curve but still fun.
by the way Ive also learnt that you dont put a large plastic handle of a screw driver into it to see what happens.
I now have a large square shanked handle less screw driver and lots of yellow plastic bits.

cheers andy