Cargo cycles

Parts

Quantity	Part	Link
1	Batteries
2	Motors
1	68mmx113mm bottom bracket - remove and store or recycle nut	Amazon
1	3d printed bottom bracket holder	CAD
2	Bottom bracket mounting plates - to achieve 68mm width for mounting a sealed bottom bracket, on either side of a 1 1/2 inch (38.1mm) replimat frame, ~15mm thick plate must be used for the bracket on either side. This might work with PET.
4	100 Watt flexible solar panels	Amazon
1	crank arm set
1	cranks
1	freewheel to axle adapter
1	keyed axle
1	keyed sprocket
1	pillow block bearings
1	wheel spindle w/ bearings, castle nut, grease cap, cotter pin
1	saddle back / seat
1	http://www.sturmey-archer.com/en/products/detail/xl-sdd

Bottom bracket

• 

  Bicycle bottom bracket adapter CAD

• 

  Bicycle bottom bracket adapter left side

• 

  Bicycle bottom bracket adapter right side

Scratch

Shimano cartridge measurements:

 32mm cartridge diameter
 49mm depth
 35mm thread diameter
 14mm thread depth
 113mm end to end
 28/62/23

Safety

• Always-on lights wired into main battery (never forget to charge or turn on)

Research

• Toothed V belt pulleys, freewheel
• CVT
• Flow storage cage
• Cart part supplier
• https://attackingpixels.com/n55-recumbent-bike-aluminium/
• https://attackingpixels.com/static/n55-XYZ-Cargo-aluminium-bike1-a308cba56b1218e1777339600fdae48c-a06fa.jpg
• https://www.youtube.com/watch?v=jf9Kw_8vFZs
• https://ebikebc.com/product/trolley-cargo-bike-kit/ https://ebikebc.com/product/child-cargo-ebike-add-on/