S-a mai discutat despre subiect. Radial este doar prinderea etrierilor in suport si nu influenteaza franarea in niciun fel.
Radial calipers / radial brakes.
Around 2003, motorbikes started to hit the showrooms with a new feature - radial brakes. The magazines and testers will all tell you that radial brakes make the bike stop quicker. Not true - they have nothing to do with stopping power and everything to do with the design of the front forks of the bike. More and more bikes are coming out with upside-down forks. ie. instead of the fat canister part of the fork being at the bottom of the assembly, it's at the top. This means that the fork pistons are now the part of the suspension with the wheel attached to them. It also means that it's impossible to put a stiffening fork brace down there now because the brace would need to move with the wheel, and the length of the fork pistons precludes that.
The stiffness of the front end is now entirely dependent on the size of the front axle. Bigger axle = stiffer front end. A side-effect of this design was that traditionally-mounted brake calipers could cause a lot of vibration in the steering because of flex between the wheel (with the brake disc bolted to it), and the fork leg (with the caliper). The slight tolerance allowed by floating brake rotors couldn't compensate for the amount of flexing in the forks. To reduce the brake-induced fork vibration, the brake calipers were moved around the rotors slightly so that they fell into the front-rear alignment of the wheel axle. There's less lateral flex at that point, which means less or no vibration. The caliper mounts were changed too. Traditional calipers bolt on to the forks with bolts going through them at 90° to the face of the brake rotor. With radial calipers, the bolts are aligned parallel to the brake rotor - effectively also in the front-rear alignment of the wheel. This design is a trickle-down technology from superbike racing where a radial caliper mount allows the racing teams to use different diameters of brake rotor by simply adding spacers between the caliper and the mounting bracket.The image here shows the difference between traditional and radially mounted brake calipers.
Read more: http://www.carbibles...l#ixzz1zrhLTzz8 Material de studiu, totul despre frana pe intelesul tuturor.
Cel mai important este ca noul far sa-si faca treaba, respectiv sa si lumineze drumul, nu numai sa arate frumos. Farul vechi era si urat si chior.