At that time, the racers were trying to make a hole in the chainring and make it lighter. The weight loss was minimal of course, but the bike certainly looked cool.
The Velo Orange Drillium Crankset is a unique crank that uses modern manufacturing techniques but has a cool look.
Cold forged from 7075 aluminum alloy. The ring is thick so it doesn't bend like a classic crank. Shifting performance has been significantly improved because the outer wheels are equipped with modern gear shifting aids such as lamps and pins. All stainless hardware with Allen head nuts/bolts Includes aluminized dust cap and BB bolts. The dust cap is useful as a self-extracting function when re-storing the crank.
- Teeth: 48/34
- Crank Length: 170 mm
- BCD: 110mm
- Q Factor: 150 mm
- Speeds: 5-10 compatible
- Taper: JIS square taper
- BB Size: 118 mm*
- Pedal Threading: 9/16"
Most road frames use a 118mm square BB. A 122mm square BB may be needed for 135mm end bikes.