Ross CENTAUR W/FENDERS 1997 VS Nishiki OPTIMA SC 1998 specs comparison

Ross Centaur w/fenders

General Infos

Model	Centaur w/fenders
Manufacturer	Ross
Year of production	1997
Current price	🛒 View Price →
Color choice	-Green
Sizes	- 16 (inches) - 18 (inches)
Sizes	- 16 (inches) - 18 (inches)

Wheels And Breaking System

Bike front tire	26 X 1.75 (inches) Ross
Bike rear tire	Not Available
Bike wheel size	26 (inches) Wheels
Brakeset type	Aluminum Levers Shimano Nexus Roller Brake and Shimano Altus Front Brakes
Hubs for disc brakes	Rear: Shimano Nexus Roller Brake Front: Shimano Altus
Rims manufacturer	36-hole Alex 7X
Spoke nipples type	Brass Nipples
Spoke wheel	2.0 (millimeters) Straight Gauge Richman Stainless Steel

Frame and Body Specs

Frame materials	Aluminum
Frame type	TIG-welded
Handlebar construction	Steel
Handlebar extender	Not Available
Handlebar stem details	Sameness Chromoly
Headset size	1 (inches) YST 665

Gearing Specifications

Bicycle chain	1/2 X 1/8 (inches) KMC 410
Bottom bracket shell width	68 (millimeters) English
Bottom bracket type	122.5 (millimeters) Spindle YST BB 621
Crankset parts and sizes	36 Teeth Dotek Aluminum
Gear shift levers	Shimano Inter-7 ST-7S20
Rear gear set	21 Teeth 7-speed Internal

Ross Centaur w/fenders Fork System Data

Derailleur (Front)	Not Available
Derailleur (Rear)	Not Available
Fork material	Unicrown Crown Chromoly
Fork type	Ross

Other Specs of Ross Centaur w/fenders

Component group sets	Shimano Nexus
Pedals details	Resin
Rear shock absorber	Not Available
Saddle seat	Viscount 6000 With Springs
Seat post extension	25.4 (millimeters) Diameter Aluminum Micro-adjust

Nishiki Optima SC

General Infos

Model	Optima SC
Manufacturer	Nishiki
Year of production	1998
Current price	🛒 View Price →
Color choice	-Okanagon Green
Sizes	- 16 (inches) - 18 (inches) - 20 (inches) - womens 16 (inches) - womens 19 (inches)

Wheels And Breaking System

Bike front tire	26 X 1.95 (inches) Rolleasy Comfort
Bike rear tire	Not Available
Bike wheel size	26 (inches) Wheels
Brakeset type	Aluminum Levers Shimano Altus Brakes
Hubs for disc brakes	Shimano RM40
Rims manufacturer	36-hole Weinmann 519
Spoke nipples type	Brass Nipples
Spoke wheel	2.0 (millimeters) Straight Gauge Chung Nan Stainless Steel

Frame and Body Specs

Frame materials	7005 aluminum c
Frame type	TIG-welded
Handlebar construction	2 (inches) Rise Aluminum
Handlebar extender	Optional
Handlebar stem details	Aluminum
Headset size	1 1/8 (inches) Victor VP-H94 Sealed

Gearing Specifications

Bicycle chain	1/2 X 3/32 (inches) KMC Z-51
Bottom bracket shell width	68 (millimeters) English
Bottom bracket type	110.5 (millimeters) Spindle Shimano BB-LP27
Crankset parts and sizes	24/34/42 Teeth Sugino Impel 250
Gear shift levers	Grip Shift SRT-4.0
Rear gear set	12 - 28 Teeth 7-speed

Nishiki Optima SC Fork System Data

Derailleur (Front)	Bottom-pull and clamp-on 31.8 (millimeters) Shimano Alivio Top-swing
Derailleur (Rear)	Shimano STX
Fork material	Unicrown Crown 4130 Chromoly
Fork type	Nishiki Comfort

Other Specs of Nishiki Optima SC

Component group sets	Shimano Alivio
Pedals details	Resin
Rear shock absorber	Not Available
Saddle seat	Selle Stratos Hyper Plush With Bumper Guard
Seat post extension	27.2 (millimeters) Diameter Aluminum Micro-adjust