Planet X Uncle John Carbon Cyclocross Fork
Carbon bladed cross fork to match our legendary Uncle John cross frame. Canti brake bosses and clearance for up to 38mm cross tyre with plenty of mud clearance to spare
Features
- 300mm Alloy steerer tube
| Weight (g) | 710 |
|---|
Frame Details
| Approx. Frame Weight (g) | 1820 |
| Seatpost Size (mm) | 27.2 |
| Seat Clamp Size (mm) | 31.8 |
| Font Mech Clamp Size (mm) | 31.8 |
| Wheels | 700C. with clearance for 38mm cross tyres |
| Mudguards | TBC |
| Rack Mounts | TBC |
| Bottle Cage Bosses | 2 sets on all sizes |
| S | M | L | XL | ||
|---|---|---|---|---|---|
| A | Head Angle (°) | 71 | 72 | 72 | 72 |
| B | Head Tube Length (mm) | 110 | 140 | 170 | 190 |
| C | Effective Top Tube Horizontal (mm) | 522 | 542 | 568 | 588 |
| D | Seat Angle (°) | 74 | 74 | 73 | 72 |
| E |
Seat Tube Length Centre to Top (mm) |
510 | 540 | 570 | 590 |
|
F |
Chainstay length (mm) | 435 | 435 | 435 | 435 |
| G | Standover Height (mm) | TBC | TBC | TBC | TBC |
| I | Stack (mm) | TBC | TBC | TBC | TBC |
| J | Reach (mm) | TBC | TBC | TBC | TBC |
Sizing Guide
| Rider Height | Suggested Frame Size |
|---|---|
| 5′3″ to 5′7″ | Small |
| 5′8″ to 5′11″ | Medium |
| 5′10″ to 6′2″ | Large |
| 6′1″ to 6′6″ | X-Large |
Sizing Notes
All frame size recommendations are approximate. A good fit will also depend on the correct choice of stem length, correct bike set-up for the rider and riding style.
Correct frame size choice can vary greatly with riders' torso length. If you have longer legs and a shorter torso, go for a slightly shorter stem. If you think you are borderline between sizes, and you have longer legs and a shorter torso, go for the smaller frame size. If you have shorter legs and a longer torso, go for the larger frame size to get the extra top tube length.
As the frame sizes increase, so does the length of the head tube. If you are inflexible or perhaps have a history of back problems, consider going for a larger frame size. This will increase the relative height of the handlebars making the position less “extreme”. The larger frame will also have a longer top tube, so you’ll need to compensate for this with a shorter stem.
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