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SIP

SIP Lambretta Late Series 2 & LI SX TV Chrome Ring Complete Steering Taper Bearing & Cone Set

Regular price £105.00 GBP
Regular price Sale price £105.00 GBP
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SIP German made Steering Taper Bearing Set for Lambretta Late series 2, series 3 LI SX & TV models with a Chrome Ring fitted.

SLUK ARTICLE 

Modern bearing technology for vintage Lambretta steering columns.

 

The steering head bearings are an important set of components which ensure the stability of the front suspension and riding safety. If the steering on any scooter shows signs of directional instability or becomes kind of vague, then this is usually caused by defective or worn steering head bearings.

  • Safe and stable steering
  • More precise steering
  • Extended service period

The standard bearing configuration found on vintage Lambretta scooters is not exactly state-of-the-art. Unfortunately, adequate replacements are also hard to find these days. Often the upper and lower bearings are badly matched, which results in the forks becoming loose or resistant to steering input. These items are also produced using inferior materials or are badly produced. This results in their rapid failure and all too often must then be replaced.

The lower bearing:

The 32908 rated tapered roller bearing provides the basis for this upgrade. Its inner ring fits the Lambretta forks exactly and the upper bearing cup is replaced by a specially conceived type made from tough EC80 steel alloy for the Lambretta frame. To keep the bearing compact, it is not provided with a shoulder to keep it in position. Instead it must be fixed a thread-lock or centre-punch. This is also treated to protect against wear and corrosion. Their outer diameter and form is identical to the types found on the original scooter models. A gasket ring is also fitted to prevent dirt and moisture contaminating the bearing assembly. It is only 2.5mm taller than the original bearing.

Warning: Remember to put the narrow dust cover on the fork under the bearing. Unlike the original, it is not clamped by the bearing on the fork. From the outside it encloses the lower / inner bearing shell.

 

The upper bearing:

A tapered roller bearing was purposely avoided to fix the top of the steering assembly/forks due to their larger dimensions being impossible in this position. This solution however also brings some welcome improvements over the original type. The bearing itself is an encapsulated inclined ball-bearing which is fully capable of accepting the forces involved while remaining very durable. It is held in position by the original fixing nut, guaranteeing an optimal operation of the steering column or forks. The fixing nut can be held in place with thread-locking liquid and/or a lock washer. This leaves it with a slightly smaller height of 20mm, rather than the ORIGINAL versions 21.5mm. The total height of the assembly can be then adjusted using nuts, washers and spacers from the standard set up.