Originally Posted by jeff-o
You will need a front-wheel disc brake for each of the front wheels. You probably won't need a brake for the rear at all, as the dual disc brakes will probably have enough stopping power. A rear brake may also cause the rear end to skid and fishtail in some stopping conditions. At most, you can use a rear brake as a parking brake, but not for routine stopping.
Thanks, thats what i thought really, but it's good to know that someone who knows what they are talking about, thinks the same. I might connect the rear brake to a gear shifter on a seat stay, to use as a parking brake. The hugely long cable run from the handlebars makes it impractical for normal braking anyway.