Description
Power take off with suitable gearing (12-13-17-21) for Vespa Largeframe PX125-200cc engines (from 1982), the Rally180/200 models as well as Cosa, T5 and LML Star/Stella.
The auxiliary shaft is delivered with riveted primary gear with 68 teeth. It can be combined with clutch pinions with 20, 21 or 22 teeth, with special pinions from BGM/DRT also with 23 teeth. This allows a wide range of gear ratios to be covered, which is already sufficient for many engines.
The GR primary reduction gearing is equipped with simple damping springs ex works.
For a longer reduction ratio for high performance/torque engines, we recommend converting to a primary gear with straight teeth with 62 or 63 teeth.
These are available as a set with reinforced double springs. These protect the gearbox as they are not fully compressed under high load and therefore always have a residual spring travel to compensate for peak loads.
GR Gears has been manufacturing engine components (gearboxes, clutches) as well as axle and bearing components for Piaggio/LML since 1981. Components manufactured by GR Gears can be found in many Piaggio engines. The quality is absolutely convincing. Since they have also proven themselves in everyday use in our own high-performance engines, they are now an integral part of our OEM delivery program.
NOTE:The bearing seat for the primary bearing as well as the circlip groove are very precisely manufactured. The snap ring for securing the primary bearing therefore often fits tightly into the groove.
Slightly removing the surface of the circlip with sandpaper (180 grit) will break up any burrs and allow the circlip to jump into the groove more easily.
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