On-One Dirty Disco Carbon Cyclocross Disc Frame And Fork
The "Dirty Disco" is On-One's brand new disc compatible carbon cyclocross frame and already it is causing a stir on and the cyclocross circuit.
An appearance with Dave Haygarth at the Three Peaks Cyclocross and the following review on Cross Junkie suggest that the 'Disco is headed for great heights:
"... light, very stiff and comfortable to carry... race performance oriented but with perfectly adequate clearances for a modern cross frame. A potential mud-fest at Brockholes, Windermere will test this properly, but the Disco passed the Horwich Humdinger slopfest test easily, lasting the whole muddy race with barely any buildup of mud, and arguably less than other canti equipped bikes around it"
"...the whole package just gels. That is not to say that the Disco doesn't climb like a rocket- it does. Nor that it doesn't track in corners like it's on rails- it does. Nor even that it is vague and skittish in technical descents- because it is anything but. It just simply comes together in one complete package that lets you get on with the riding, fast or slow, dry or muddy and does not intrude in any way at all"
Much more versatile than exclusively a cyclocross race frame, the Dirty Disco is also perfect for a huge range of applications including commuting and touring.
Initial stocks are strictly limited but all sizes are available.
Technical spec:
- Seat post diameter: 31.6mm
- Front mech and seat clamp diameter: 34.9mm
- Bottom bracket: BSA standard threaded
- Fork steerer diameter: 1 1/8 inch
- Rear spacing: 135mm (takes 29er MTB wheels)
- Finish: Matt lacquered 3K carbon weave
- Decals: Self adhesive (see graphic below)
- No mudguard or rack mounts
Frame Details
| Approx. Frame Weight (g) | 1260gr for size S(52),490gr uncut fork |
| Seatpost Size (mm) | 31.6 |
| Seat Clamp Size (mm) | 34.9 |
| Front Mech Clamp Size (mm) | 34.9 |
| Wheels | 700C. with clearance for 35mm cross tyres |
| Mudguard mounts | None |
| Rack Mounts | None |
| Brake type | Disc Only |
| Headset type | FSA Orbit C-40 ACB No. 42 |
| Bottle Cage Bosses | 2 sets on all sizes |
| XS(50) | S(52) | M(54) | L(56) | XL(56) | ||
| A | Head Angle (°) | 71 | 71.5 | 72 | 72.5 | 73 |
| B | Head Tube Length (mm) | 100 | 120 | 140 | 160 | 180 |
| C | Effective Top Horizontal (mm) | 523.5 | 535 | 547.1 | 561.9 | 575.7 |
| D | Seat Angle (°) | 75 | 75 | 74 | 74 | 74 |
| E | Seat tube Length Centre to Top (mm) | 500 | 515 | 530 | 565 | 595 |
| F | Chainstay Length (mm) | 425 | 425 | 425 | 425 | 425 |
Sizing Guide
| Rider Height | Suggested Frame Size |
|---|---|
| 5'2"- 5'6" (157 - 167cm) | X-Small (50) |
| 5'5" - 5'8" (165 - 173cm) | Small (52) |
| 5′8″ to 6'0″ (173 -183cm) | Medium (54) |
| 5′11″ to 6′2″ (180 - 188cm) | Large (56) |
| 6′1″ to 6′5″ (185cm- 196cm) | X-Large (58) |
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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