Transition – Giant OCR 105 9-speed – medium

Highlights

Whoah – what a paint job! Transition Magazine gave us carte-blanche to create a beautiful bike from ‘an old bike from the shed’. We refurbished the bike using mostly parts that came from the bike. It has a 9 speed 105 groupset with Shimano RS31 wheels. A dependable bike – with stunning looks.

 

Detailed specifications

Frame

  • Brand: Giant
  • Type: OCR
  • Modelyear: 2003
  • Size: Medium
  • Material: Aluminium
  • Brake fitting: Standard rim brake
  • Bottom bracket fitting: BSA 68mm
  • Headset fitting: IS41 / IS41
  • Seatpost diameter: 31.6 mm
  • Seatpost clamp diameter: Brazed on
  • Front derailleur clamp diameter: 34.9 mm
  • Rear axle spacing: 130 mm
  • Rear axle fitting: Quick release, standard
  • User history: This bike used to belong to the Editor of Transition. He kept the bike in his shed because, well, you never know. Inspired by Circular Cycling he decided to let Circular Cycling overhaul the bike to make it a worthy prize for a prizedraw in Transition magazine.
  • Condition: Once we were done: Great Condition

Forks

  • Brand: Giant
  • Type: OCR
  • Material – steerer: aluminium
  • Material – Fork legs: Carbon
  • Front axle spacing: 100 mm
  • Front axle fitting: Quick release, standard
  • Steerer tube diameter: 28.6 mm (1.1/8″”)
  • Steerer tube length: 22 cm cm
  • Steerer tube minimal length: 18.5 cm cm

Headset

  • Brand: Giant
  • Type: Integrated
  • Fitting top: IS41 / 28.6
  • Fitting bottom: IS41 / 28.6
  • Estimated remaining lifetime: 70%

Stem

  • Brand: Specialized
  • Type: Custom painted
  • Material: Aluminium
  • Length: 110 mm
  • Angle: 6°
  • Steerer diameter: 28.6 mm (1.1/8″”)
  • Handlebar diameter: 31.8 mm

Handlebar

  • Brand: FSA
  • Type: Omega
  • Material: Aluminium
  • Diameter: 31.8 mm
  • Width (c-c): 42 cm
  • Shape: compact
  • Estimated remaining lifetime: 100%

Seatpost

  • Brand: Easton
  • Type: EA50, custom painted
  • Material: Aluminium
  • Diameter: 31.6 mm
  • Length: 35 cm
  • Maximal length extending from frame: 25 cm

Seat

  • Brand: Prologo
  • Type: Kappa
  • Rails: steel
  • Estimated remaining lifetime: 80%

Shifters

  • Brand: Shimano
  • Type: 105 ST-5510
  • Number of gears: 18
  • Estimated remaining lifetime: 60%

Front derailleur

  • Brand: Shimano
  • Type: 105 brazed-on FD-5600
  • Number of gears: 2
  • Estimated remaining lifetime: 80%

Rear derailleur

  • Brand: Shimano
  • Type: 105 RD-5701
  • Number of gears: 9
  • Estimated remaining lifetime: 80%

Bottom Bracket

  • Brand: FSA
  • Type: Mega Exo BB-8000/6000
  • Bottom bracket frame fitting: BSA 68mm
  • Bottom bracket axle fitting: 24 mm
  • Estimated remaining lifetime: 80%

Crank arms

  • Brand: FSA
  • Type: Gossamer
  • Material: Aluminium
  • Length: 172.5 mm
  • Bottom bracket axle fitting: 24 mm
  • Bolt Circle Diameter: 110 mm

Chainring 1

  • Brand: FSA
  • Type: N-10
  • Material: Aluminium
  • Number of teeth: 50
  • Bolt Circle Diameter: 110 mm
  • Estimated remaining lifetime: 90%

Chainring 2

  • Brand: FSA
  • Type: Alu
  • Material: Aluminium
  • Number of teeth: 34
  • Bolt Circle Diameter: 110 mm
  • Estimated remaining lifetime: 90%

Cassette

  • Brand: SRAM
  • Type: Ultegra PG-950
  • Number of gears: 9
  • Gear range: 11-28 t
  • Freewheel body fitting: Shimano 8/9/10 speed
  • Estimated remaining lifetime: 100%

Chain

  • Brand: Shimano
  • Type: 105 HG73
  • Number of gears: 9
  • Number of links111
  • Estimated remaining lifetime: 100%

Brakes

  • Brand: Shimano
  • Type: Ultegra BR-6500
  • Frame fitting: Standard rim brake
  • Estimated remaining lifetime: 80%
  • Brake pads – fitting: Shimano cartridge
  • Brake pads – estimated remaining lifetime: 80%

Wheels

  • Wheels – brand: Shimano
  • Wheels – type: WH-RS31
  • Hubs – Axle spacing front wheel: 100 mm
  • Hubs – Axle fitting front wheel: Quick release, standard
  • Hubs – Axle spacing rear wheel: 130 mm
  • Hubs – Axle fitting rear wheel: Quick release, standard
  • Hubs – Freewheel hub standard: Shimano 11 speed
  • Rims – material: Aluminium
  • Rims – internal width: 15 mm
  • Rims – estimated remaining lifetime: 90%
  • Hubs – estimated remaining lifetime: 90%

Tires

  • Brand: Continental
  • Type: Grand Prix 4000 II
  • ETRTO fitting: 622 (700C)
  • Width: 25 mm
  • Estimated remaining lifetime: 100%