Front Brake Caliper on RS Paris Roubaix

[Simon Kolin]

Hi All,

 

I'm building up a bike with a RS Paris Roubaix fork and I've run into a bit of a problem. 

 

I've removed the brake calliper from the stock fork and have tried to install it on the Roubaix. The issue I have is that the centre fixing bolt is too long for the Roubaix. The brake arch (see image) is much thinner than the crown on the stock fork.

 

Using spacers on the front of the fork brace doesn't help. The centre fixing nut sticks out the back. I've tried a shorter nut and that doesn't help either.

 

Am I doing something obviously stupid? I'm really stuck for a solution.

 

Thanks

 

Simon

[Martin PJ]

On the google images of this fork, it looks like a rear brake is installed on the front.

[Simon Kolin]

On the google images of this fork, it looks like a rear brake is installed on the front.

Because of the bolt length?

 

Please send me an image.

[Simon Kolin]

Swapped the Front Caliper for the Rear Caliper....the length is better, but the fit is questionable.

 

 

[Martin PJ]

If you put a spacer in front (between frame and caliper) it would fit.

 

Don't have experience of this fork, guessing they used two rear brake calipers on the frame. As you have installed it above.

[Martin PJ]

https://www.bikeforums.net/classic-vintage/872609-rock-shox-paris-roubaix-sl-point-pointless.html

 

In this thread one owner says the front bolt for the caliper is modified.

[Simon Kolin]

If you put a spacer in front (between frame and caliper) it would fit.

 

Don't have experience of this fork, guessing they used two rear brake calipers on the frame. As you have installed it above.

Hi Martin,

 

I've used 2 spacers on the front between the front of the brake and the rear of the caliper (2 spacers). Without the spacers, the brake pads don't clear the brace.

 

Thanks for your help anyway.

[Simon Kolin]

I've abandoned this project. I'll stick to using a normal fork and the Roubaix will be wall art