Dahon ROCK HARD XT612 1999 VS Burley BIRDY 7 1998 specs comparison
Dahon Rock Hard XT612
General Infos| Model | Rock Hard XT612 |
| Manufacturer | Dahon |
| Year of production | 1999 |
| Current price | Check price Here ==> |
| Color choice |
-Red |
| Sizes |
- 17 (inches) |
| Sizes |
- 17 (inches) |
Wheels And Breaking System
| Bike front tire | 26 X 1.95 (inches) |
| Bike rear tire | Not Available |
| Bike wheel size | 26 (inches) Wheels |
| Brakeset type | Vanguard Linear-pull |
| Hubs for disc brakes | Alloy |
| Rims manufacturer | 36-hole Aluminum |
| Spoke nipples type | Brass Nipples |
| Spoke wheel | Straight Gauge Steel |
Frame and Body Specs
| Frame materials | Hi-tensile Steel |
| Frame type | TIG-welded |
| Handlebar construction | Not Available |
| Handlebar extender | Not Available |
| Handlebar stem details | Not Available |
| Headset size | 1 (inches) |
Gearing Specifications
| Bicycle chain | 1/2 X 3/32 (inches) KMC HP-20 |
| Bottom bracket shell width | Not Available |
| Bottom bracket type | Not Available |
| Crankset parts and sizes | 24/34/46 Teeth Dotek |
| Gear shift levers | Grip Shift MRX-100 |
| Rear gear set | 14 - 28 Teeth 7-speed |
Dahon Rock Hard XT612 Fork System Data
| Derailleur (Front) | Bottom-pull Shimano Tourney TY-22 Top-swing |
| Derailleur (Rear) | Shimano Tourney TY-22 |
| Fork material | Not Available |
| Fork type | Not Available |
Other Specs of Dahon Rock Hard XT612
| Component group sets | Shimano Tourney TY-22 |
| Pedals details | Resin |
| Rear shock absorber | Not Available |
| Saddle seat | Not Available |
| Seat post extension | 25.8 (millimeters) Diameter Kalloy Aluminum |
Burley Birdy 7
General Infos| Model | Birdy 7 |
| Manufacturer | Burley |
| Year of production | 1998 |
| Current price | Check price Here ==> |
| Color choice |
-Metallic emerald green |
| 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 | 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 STS |
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 | Grip Shift SRT-400 |
| Rear gear set | 11 - 28 Teeth 7-speed |
Burley Birdy 7 Fork System Data
| Derailleur (Front) | Not Available |
| Derailleur (Rear) | Shimano STX-RC |
| Fork material | 7005 T-6 Aluminum Alloy |
| Fork type | Birdy Leading Arm Suspension |
Other Specs of Burley Birdy 7
| Component group sets | Birdy Mix |
| Pedals details | Victor VP-195 |
| Rear shock absorber | 1.5 (inches) Travel Birdy Elastomer |
| Saddle seat | Velo Crossbow |
| Seat post extension | 34.7 (millimeters) Diameter Birdy Special 500 (millimeters) |
Useful links and guides ....
- To know more about this exacte bike, Dahon provided us with the latest version of its Rock Hard XT612 bike manual
- Find All parts, tires and accessories of Dahon Rock Hard XT612 Folding here
- Get your Burley Birdy 7 manual book version yo know further about this bike
- Saddles, tires And mechanical parts for Burley Birdy 7 Folding here