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In use, Sturmey-Archer variable gear hubs are the easiest, cleanest and most convenient means of making a change of gear. The change may be made while the cycle is in motion or when it is stationary, which is a great advantage to cyclists riding in traffic where stops and gear changes are frequent.
If the change is made while the bicycle is moving, the rider should continue to pedal but gently ease the pressure on the pedals as he makes the change which should be carried out smartly.
Should it be necessary to change gear whilst stationary, the weight of the foot should be allowed to rest on higher pedal during change, so that internal gears will rotate and engage easily.
The ideal rule for lubrication should be 'a little but often'. Two or three drops of oil every week will maintain the hub in first class running order. A new hub should always be oiled before use because the oil put in at the factory may have evaporated in the interval between leaving the factory and being put to use on the road.
TCW (Tricoaster) hubs need more oil than other hubs because in their case the oil is used not only for lubrication but also to dissipate heat generated by the brake. (that is, the oil burns up -- John Allen).
Internal expanding brake hubs have a drainage hole in the brake plate to allow surplus oil to drain away. If this is not kept clear oil will seep through to the linings and reduce the efficiency of the brake.
Since Dynohub hub lighting sets have no bearings of their own, the only lubrication needed is for the hub bearings and gear mechanism. Oil will not harm the dynamo, so there is no risk of damage in oiling the hub.
The moving parts of the trigger unit need an occasional drop of oil to ensure easy action,-but as surplus oil will attract dirt, oiling at this point should be done carefully and sparingly.
Occasionally the outer casing of the control cable should be removed from the fulcrum clip so that the inner wire may be exposed and lubricated.
|Articles by Sheldon Brown and others|
Last Updated: by Harriet Fell