Here is an overview of the spring rates of the Cosa clutch springs commonly used on the market:
Experience has shown that even with a motor power above 25HP in our BGM Superstrong clutch 10stk. BGM PRO XL springs are completely sufficient and still allow an easy operation of the clutch (a well oiled Teflon cable helps additionally!).
TIP: You can also use combined spring sets, e.g. 5x Piaggio + 5x BGM PRO XL. This results in a virtual single spring rate of 5.3N/mm.
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