Calculated Bill of Materials for The Liberator Beta v1.0

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Item
Weight (lb)
Cost ($)
TOTAL MATERIALS COST FOR THE LIBERATOR II 1922 2902
Soil Loader Motion Guides
6x12x1/2” flat – 4 pieces – reduce to half the height -20 -13
3/4” ID bearings – 12 pieces – reduce to 4 -1 -32
2x2x3/16” square tube, 3” long – 4 pieces - eliminate -5 -4
3/4x4” bolt – 8 pieces – reduce by half -2.5 -4
Hydraulic Cylinders
5x8x2.5”– local source found 66 -150
1.5x14x1”- replace with a 2.5” cylinder 12? 127?
Mounting ears, 1/2x2.5x2.5”, and 1/4x2x2”, pins, and pin clips 3 4
Needle valve with quick couplers – not needed with bigger cylinder -2 -49
1/2”x10' hydraulic hose – 4 pieces 24 88
4 quick coupler pairs – reduce to 2 -3 -34
3-spool, 25 GPM valve – change to 2 spool, 10 gpm use a ball valve ($27) -25 -145
Large Hopper
2x2x1/4” steel grate support, 12' – eliminate, and hang on extenders -79 -37
1/2x5” bolts – 4 pieces 1 2
2x2x1/4” hopper extenders, 45” long – 6 pieces 150 70
1/2x3” bolts with nut and washers for extenders – 6 pieces 1 4
1/8x2x2” connecting angles, 6” long – 12 pieces 10 9
24 bolt stubs 1 5
Hopper sheet metal, 11 gauge, 5'x10' – reduce 30% -70 -33
Hopper Grate
4'x6' expanded mesh screen – 3/4” - reduce 25% -15 -20
Grate frame metal, 1x3”, 11 gauge, 34' long – reduce 25% -30 -15
2x2x1/4” angle incline supports, 4' 13 8
Tilt support reinforcements, 1/4x3x3” flats – 4 pieces 3 2
1/2x3” bolts with nuts and washers – 4 pieces 1 1
Grate Shaker
1/4” quick coupler pair – eliminate and hard wire 1 -10
1/2” quick coupler pair – 2 pieces – eliminate and hard wire -2 -10
1/2”x10' hydraulic hose – 2 pieces 12 44
1.93 cubic inch hydraulic motor – use another larger, cheaper motor +8 -100
Motor quick coupler fittings – eliminate and hard wire -1 -24
1/4x3x5” angle, 6” long 3 2
5/8” to 1” shaft coupler – use a 1”-1” coupler for our motor 2 -20
1” shaft, 8” long 2 5
1x2x6” shaker element3 3 3
5/16x6 flat, 9” long 8 4
1” pollow block bearings – get bearings from Surpluscenter 6 -22
Consumables and Other Costs
.035” welding wire, 1 spool -r educe 75% -15 -15
Oxygen (1 bottle, 50 lb) + acetylene (¼ bottle) – oxyacetylene cutting – 75% down -30
Carbon dioxide welding shielding gas, 1 bottle, 50 lb – 75% reduced -20
Fuel (transport, welder generator) – 15 gallons – 75% reduced -20
Hydraulic fluid fill for cylinders, 1 gallon 7 7
Labor at metal shop, 1 hour – outsource? 50?
Total Reduction 273 807
TOTAL COST FOR PROTOTYPE III 1650 lb $2095

NOTES:


selector valve $35, sae 12


Ball valve - https://www.surpluscenter.com/item.asp?UID=2009110219333384&item=9-7281-8&catname=hydraulic - $27, 3 lb

2 spool, 10 gpm - https://www.surpluscenter.com/item.asp?UID=2009110219333384&item=9-7692&catname=hydraulic – 18 lb

https://www.surpluscenter.com/item.asp?UID=2009110219333384&item=9-7076-50&catname=hydraulic – motor, 130, 16 lb

coupler - $20 - https://www.surpluscenter.com/item.asp?UID=2009110219333384&item=1-1108&catname=powerTrans – 2 lb