Drive Train - Cranks, Pedals & Chains

Crank Design ...

• 2 Cranks - one on either side - can rotate independently or locked at 180 degrees
  
• These aluminum cranks from Sturmey Archer look good (specs below)
• Pedals - something like these shimano ultegra pedals ($145)
  
  
• Cranks drive 2 chains connected to the hubs - double chains for safety/security/ balance /
  
• 
  

FCS80 Series

Model Numbers

• FCS81
• FCS80

Description

• Front Chainwheels with Non-Removable Chainrings

Specs for FCS81

• Number of Teeth - 33T
• Chainring Material - SS400
• Removable Chainrings - No
• Crank Style - I Beam Crank
• Crank Arm Material - A356.2 Aluminum
• Crank Arm Length - 175mm or 170mm
• 45mm Chain Line (BB Shell) - 126mm
• Total Weight - 673g (175mm)

Specs for FCS80

• Number of Teeth - 30T
• Chainring Material - SS400
• Removable Chainrings - No
• Crank Style - I Beam Crank
• Crank Arm Material - A356.2 Aluminum
• Crank Arm Length - 175mm or 170mm
• 45mm Chain Line (BB Shell) - 126mm
• Total Weight - 607g (175mm)