Verificando o Cubo Dianteiro da Bicicleta

Introduction

O cubo dianteiro deve segurar a roda firmemente na bicicleta e também permitir que a roda gire.

Step 1

Is the front hub loose enough - Verificando o Cubo Dianteiro da Bicicleta

Is the front hub loose enough

Lift the front end of the bike so the front wheel is off the ground. Give the wheel a gentle spin. It must turn smoothly without clicks or catches. If there’s a problem with the brake open it to check the front hub. Mudguards rubbing may be another source of distracting problems.

Step 2

A Good Test - Verificando o Cubo Dianteiro da Bicicleta

A Good Test

If you set the valve hole at three o’clock a good wheel bearing will allow the the weight of the valve, or the weight of joint in the rim which is opposite the valve to pull to the bottom. On a brand new or recently serviced bike the front hub may be full of grease, otherwise a bearing in condition will allow this movement.

Step 3

Is the front hub tight enough - Verificando o Cubo Dianteiro da Bicicleta

Is the front hub tight enough

Grab the rim and pull it sideways. There must be no discernible movement at the front hub. If the wheel moves from side to side on the axle the bearing is too loose. This test also checks if the wheel axle is clamped tightly in the frame.