‘X33r PowerMaster CushDrive’ 7 plate clutches are the first dedicated mass-produced Lambretta clutches with an integral cushdrive in the lower section designed for all tuned engines. All parts are Italian made to the highest possible standards, with NO compromises whatsover taking during the manufacturing process.
WHAT IS A CUSHDRIVE?
The idea of the cushdrive is that this drastically reduces the ‘shock’ of the power output being transmitted to the gearbox during harsh riding or quick gearchanging. This concept has been used with great success for years in motorcycle and kart circles, and even Innocenti tried a similar system with their Series 1 and 2 models, albeit using a system capable of withstanding very limited power. Originally, a BSG-designed cushdrive clutch is what this was based upon, although the design was heavily altered and then perfected, after extensive testing by the Casa Lambretta Racing Team. The new Casa Performance clutches use rubber buffer ‘rings’ made of a material specifically designed for cushdrive. There are seven friction plates. These are the clutches used in the new Casa Performance ‘SSR250’ and ‘SSR265 Scuderia’ engines which put out 47bhp as standard.
HOW MANY SPRINGS?
Twelve springs are supplied with each clutch and the number of springs can be reduced as needed, for example: a SSR265 Scuderia with 47bhp will need all 12 springs, whereas a Mugello 186 with 10bhp will probably only need 4.
The PowerMaster Cushdrive clutches are available in 47T and 48T crownwheel sizes and the actual toothed crownwheels can be swopped over and changed, as they are available to purchase separately. 46T size PowerMaster clutches cost slightly more due to the manufacturing process needed to produce the toothed crownwheel of this version, which is more complex to produce than the other two versions and 46T versions are available HERE
Casa Performance have put a lot of time and consideration into resolving some of the issues found on other aftermarket clutches to ensure that the PowerMaster Cushdrive clutches are perfect in quality, fitment and access. These clutches can be dismantled simply by removing the central ‘Thrust Bearing’ disc and you have instant access to the 22mm main clutch / cluster nut, so no clutch compressor tool is required. The high-quality Thrust Bearing system was designed after problems were found with other clutches on the market suffering from the central pressure button locking up and even welding itself together due to excessive heat build-up. No chance of that happening with the PowerMaster.
The PowerMaster CushDrive clutch is a plug n’ play part for ALL Italian, Spanish or Indian Lambretta engines, including new generation engines such as CasaCases , Gran Turismo and Misano engines. Being 1cm taller than a normal Lambretta clutch, you will either need to use this clutch with a X240 CasaCover engine sidecasing (which will also give you the added advantage of feather light clutch lever action at the handlebars) or a 1cm spacer between the engine casing and the original type sidecasing.
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