Formula One - 1st Generation

Overview

Manufacturer: Koizumi

Finishes: Chrome with a mixture of Turbo Smoke and Bronze/Gold components


Specification

Frame: Full Chromoly. Three Main Tubes Double Butted
Forks: Chromoly (Butted) - reduced length
Handlebars: Diamond Back Chromoly (medium oversize)
Stem: Diamond Back / F1 Hinged Top - Turbo Smoke Finish (Sugino)
Grips: B-1B Black/Grey (Oakley)
Headset: MTX, cups, top race, locknut - Turbo Smoke Finish (Tange)
Rims: New 7x 20x1.50 (N), Chrome Plated (Araya)
Spokes: 80g Black/Brass Double Butted, Chrome plated
Hubs: DB Sealed, Turbo Smoke Finish (Suzue)
Tyres: Comp III 1.75 front, Turbo-Lite Comp III 1.50 rear (Mitsubboshi)
Brakes: 890 rear, Turbo Smoke Finish (Dia-Compe)
Levers: Tech III, Turbo Smoke Finish (Dia-Compe)
Cable: (Dia-Compe)
Pedals: XC-II Chromoly Axle (Suntour)
Crank: DB CT Chromoly 3 Piece 175mm ,Spider - Turbo Smoke Finish (Sugino)
Bottom Bracket: Chromoly Bottom Bracket Axle
Chainring: 44T Alloy (Sugino)
Spider: N/A
Freewheel: 16T Chrome plated (Suntour)
Chain: 3/32 Rustless Chrome Plated (D.I.D)
Seat: Diamond Back F-1 5 Gold (Kashimax)
Seat Post: Diamond Back F-1 Chrome Plated semi fluted (STRONG)
Seat Post Clamp: Diamond Back F-1 Turbo Smoke Finish (SR)

Additional Information

Serial number location: underside of bottom bracket starting 3

Rear dropout: approx 1/16" (1.6mm)

Top tube length: tbc

We started to see the introduction of the small gussett non looptail with the Formula One, this bike has high end components and was manufactured by Koizumi, it also shared a new style brake bridge shared with the Harry Leary (small gussett). Notice the 1st gen decals in Red/Black.

A simple way to identify the frame was noting the square tubed rear brake bridge and the slotted rear bottom braket brace.