3. Press Plate Base Plate
Modified press plate and base plate.
This design is better for manufacturing.
Other parts of the first subsystem have been modified for laser cutting.

4. 4-Speed Crank Axle Gearbox from Tamiya
Gearbox to be Used in the First Subsystem
Source:http://www.hobbyengineering.com/H2031.html
Assembled
Gearbox Disassembled
Gearbox
Gearbox Specs: This 4-Speed Crank Axle Gear
Box is small but has a lot of power. There are four
gear ratios to choose from, including the slowest
ratio that allows for two rotations per minute. Two
crank arms are included for added flexibility in the
design of projects. Gear Ratios: 126:1, 441:1,
1543.5:1, 5402:1. Motor: FA-130. This motor
seems to be the best fit for our subsystem
because of the flexibility it implements with the
various gear ratios.
Sku: 2031
Qty. Price
1 to 4 $10.99
5 to 9 $9.89
10 to 19 $9.34
20 or more $8.79

5. Mabuchi FA-130 Motor
Motor Specs:
• Flat housing, metal brush motor. Operating voltage 1.5VDC to 3VDC. At
1.5VDC no load output is 9100RPM at 200mA, stall torque is 26g-cm
(0.36oz-in) at 2.2A and maximum efficiency output is 6990RPM
delivering 6g-cm (0.08oz-in) torque while drawing 660mA current.
• The motor has a 2mm (0.078") diameter shaft that extends 7.3mm
(0.29") beyond the front bearing.
• The metal can dimensions are 15mm (0.59") over the flats and 20mm
(0.79") over the curve. The length is 25mm (0.99") measured from the
flat front of the can to the flat part of rear plastic cap. The body length is
29.1mm (1.15") measured to the bearing / alignment surfaces. The
overall length is 38mm (1.5") measured tip-to-tip of the drive shaft.
Quick Facts
Sku: 2242
Brand:
Tinkering
Supplies
Brand's Part
Number:
FA-130
Qty. Price
1 $2.99
2 to 9 $2.54
10 to 19 $2.39
20 or more $2.24
Source:http://www.hobbyengineering.com/H2031.ht
ml

6. The design requires 6 bearings. The selected bearing is from thebigbearingstore.com.
The estimated total cost for 6 bearings with shipping is $17.39. The design has been
modified for this specific bearing.

7. Offset Shaft for Clamp Opener Offset Shaft for Knife
The offset shafts for the second subsystem resemble the offset shaft used in the
first subsystem. The offset shafts utilize the same parts in different configurations.
Not pictured is the bearing which will be press fitted into the connecting shaft.

8. Before modifications After modifications

9. •
•
•
•
•

10. •
•
• PAWL GEAR
• CAM
• PILLOW BLOCK BEARINGS (REPLACED BY LUBRICATED JOURNALS SUPPORTED BY SHEETING)
•
• LC PARTS (8HRS PROGRAMMING/CONVERTING FILES & SETUP MACHINE) (1HRS CUTTINGS)
• WELDING TOGETHER (10 HRS)
• JOURNALS (6HRS)
• BARREL (6HRS)
• PISTON (3 HRS)
• PISTON SPRING MOUNTS (3 HRS)
• BARREL MOUNTS (4 HRS)
• INNER SPRING PIN (10 HRS)
• SPRING PIN SHEATH (3 HRS)
• PAWL MOUNT (2 HRS)
• RELEASE PIN (8 HRS)

12. •
•
•
•
•
•

13. •
•
•
•
•