New answers tagged cyclocross
You could probably find a short travel fork designed for a hybrid bike and put that on your cross bike. However, I havn't seen this happen at any races that I've been to. It's more typical for non-pro riders to use a mountain bike instead of a cyclocross bike to compete in cyclocross races. The shocks do soak up a bit of pedaling effort, which is why they ...
Besides weight, suspension robs you off energy when pedaling, by compressing when you push on the pedal (and rebounding between strokes so the energy spent compressing is wasted). Pedaling is obviously more important in cyclocross than MTB, hence no suspension.
Cyclocross courses are (generally) too smooth and relatively fast to warrant the use of suspension. Sure, it might be more comfortable, but the added weight would only slow you down and leave you behind your competitors on a typical muddy course.
Note: I don't do cyclocross, so this is mostly speculation. I'd guess its primarily a weight issue, as well as the culture of the people who do cyclocross. I did find a manufacturer doing rear suspension though. This link is also interesting reading. The author first notes that suspension would make the ground contact better, but the weight or geometry ...
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