Is this right?

[dopeshots]

1/ Should the Front spring that holds the front sprocket & Cush drive on, spin even when fitted correctly?
2/ Are there different size/length front springs?
3/ could the Cush drive jump whilst on tick over causing a loud knocking noise until revved?

Any help appreciated.

Cheers

[bristolmod]

No
Yes
No

From memory, some S1 springs are shorter than the rest, which may give rise to the symptoms outlined.

Can you measure your spring in an uncompressed state?

Chris

[Daggs]

Have you ever measured yours in an expanded state ????

[bristolmod]

not been expanded for years Andy.............................as your Mrs well knows!!

[Trojan]

oooooooooooohhhhhhhh ..........