Calculated Bill of Materials for The Liberator Beta v1.0
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| 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
