I don't understand the logic behind this. Why a front brake and not a back? When was a kid I remember stopping the fast moving bike with he front brake and was quickly flipped over the bars.:idea:
From Wikipedia on fixed gear bikes:
Because it is possible to slow down or stop a fixed-gear bike by resisting the turning pedals, some riders think brakes are not strictly necessary. However, if the rider of a fixed-gear bike only has a rear wheel brake, the maximal deceleration is significantly lower than on a bike equipped with both a front and rear brake. As a vehicle brakes, weight is transferred towards the front wheel and away from the rear wheel, decreasing the amount of grip the rear wheel has. Shifting the rider's weight aft will increase rear wheel braking efficiency, but normally the front wheel might provide 70% or more of the braking power when braking hard (see Weight transfer). Some fixed gear riders only equip their bike with a front brake.