Burley BIRDY 3 X 7 1998 VS Bike Friday POCKET ROCKET PRO ULTEGRA 2X9 2000 specs comparison

Burley Birdy 3 x 7

General Infos

Model	Birdy 3 x 7
Manufacturer	Burley
Year of production	1998
Current price	Check price Here ==>
Color choice	-Aluminum with clearcoat
Sizes	- Rider can adjust manually
Sizes	- Rider can adjust manually

Wheels And Breaking System

Bike front tire	18 X 1.5 (inches) Birdy Hi-Pressure
Bike rear tire	Not Available
Bike wheel size	18 (inches) Wheels
Brakeset type	Dia-Compe DP-7 Levers Dia-Compe VC-737 Brakes
Hubs for disc brakes	Rear: Sachs 3 X 7 Front: Shimano Alivio
Rims manufacturer	24-hole Alex DV-15
Spoke nipples type	Brass Nipples
Spoke wheel	1.8 (millimeters) Straight Gauge Stainless Steel

Frame and Body Specs

Frame materials	7005 T-6 Aluminum Alloy
Frame type	TIG-welded
Handlebar construction	Tranz-X Zanzibar
Handlebar extender	Optional
Handlebar stem details	Birdy Folding Adjustable
Headset size	1 1/8 (inches) Threadless Aheadset AL-2

Gearing Specifications

Bicycle chain	1/2 X 3/32 (inches) Sachs SC-40
Bottom bracket shell width	68 (millimeters) English
Bottom bracket type	113 (millimeters) Spindle Tien Hsin TH-7418 AL Sealed Cartridge
Crankset parts and sizes	56 Teeth Dotek Pro-6
Gear shift levers	Sachs Wavey
Rear gear set	13 - 23 Teeth 3-speed Internal X 7-speed

Burley Birdy 3 x 7 Fork System Data

Derailleur (Front)	Not Available
Derailleur (Rear)	Shimano Deore XT SGS
Fork material	7005 T-6 Aluminum Alloy
Fork type	Birdy Leading Arm Suspension

Other Specs of Burley Birdy 3 x 7

Component group sets	Birdy Mix
Pedals details	Wellgo WPD-95B Clipless and quill Combination
Rear shock absorber	1.5 (inches) Travel Birdy Elastomer
Saddle seat	Velo Crossbow
Seat post extension	34.7 (millimeters) Diameter Birdy Special 500 (millimeters)

Bike Friday Pocket Rocket Pro Ultegra 2x9

General Infos

Model	Pocket Rocket Pro Ultegra 2x9
Manufacturer	Bike Friday
Year of production	2000
Current price	Check price Here ==>
Color choice	- Black Diamond - Blue - British Racing Green - Candy Apple Red - Green - Midnight Blue - Purple - Red - Sapphire Blue - Stealth - White - Yellow -Black
Sizes	- Rider can adjust manually

Wheels And Breaking System

Bike front tire	26 (inches) BF HP Sport Tire
Bike rear tire	Not Available
Bike wheel size	26 (inches) Wheels
Brakeset type	Dia-Compe 188 TRI Levers Shimano 105 Dual Pivot Brakes
Hubs for disc brakes	Shimano 105
Rims manufacturer	36-hole Sun Rims ME14A
Spoke nipples type	Brass Nipples
Spoke wheel	2.0 (millimeters) Straight Gauge DT Stainless Steel

Frame and Body Specs

Frame materials	Steel
Frame type	TIG-welded
Handlebar construction	Profile AirWings TT
Handlebar extender	Optional
Handlebar stem details	BF Custom Adjustable Threadless
Headset size	1 1/4 (inches) BF Alloy Threadless

Gearing Specifications

Bicycle chain	1/2 X 3/32 (inches) Shimano CN-HG72
Bottom bracket shell width	68 (millimeters) English
Bottom bracket type	109.5 (millimeters) Spindle Shimano BB-5500
Crankset parts and sizes	46/56 Teeth Shimano 105
Gear shift levers	Shimano Ultegra Bar-end
Rear gear set	11 - 23 Teeth 9-speed

Bike Friday Pocket Rocket Pro Ultegra 2x9 Fork System Data

Derailleur (Front)	Braze-on Shimano 105
Derailleur (Rear)	Shimano 105 GS
Fork material	Not Available
Fork type	Not Available

Other Specs of Bike Friday Pocket Rocket Pro Ultegra 2x9

Component group sets	Folding Mix
Pedals details	Optional
Rear shock absorber	Not Available
Saddle seat	Optional
Seat post extension	27.0 Diameter Kalloy Uno