My Mruder (bruder cat320 something look alike)

[cdm]

No Longer Available.

picked up the perfect 6061 pipe stock i can sleeve over; 1.37id vs 1.36 od for the stock leimbach. jbweld should seal it well. im not even going to attempt to weld that! im glad i live an hour away from a mcmaster warehouse. lifesaver i tell you.

i set programming mixes now. pump idle is at 30 and it goes up to 60 with a single valve use (faster results in no higher speed that i can visually note). then when 2 are activated it runs at close to 90. 3 pushes 100. this gives me enough flow to move all cyllinders at once for short times without killing the pump or pulling massive battery amps constantly. i will likely tweak these down the road. but my experiment was cut short last night as i mentioned

began extending the body as well. more on that later down the road when i have something complete to show. i'll make a whole new canopy and cab, scaling it to at least a 60ton machine. no particular brand on model. i'll also double my counterbalance.

the rod is something like 7.5mm D (odd number i know) at first i thought they were 6mm but that is not the case. 14mm inside diameter of the tube. i am using digital servos @6v so control is more precise than my frame skipping camera shows. although there is grat momentum on the downward swing. i can rock the whole model if i stop the boom suddenly.