So, after putting all the things that were wrong right, I took the bike out for a ride this morning.
started third kick and sounded OK.
Went out and straight away noticed that the clutch is super light, almost too light, and also it is slipping quite easily. That can be sorted no problem, but the gearbox is a worry? I definitely pulled away in 1st, as there is a definite neutral between 1st and 2nd. 2nd felt OK, but as I snicked it onto 3rd, the bike revved away as if it was a false neutral? I pulled the clutch and gave it a heavier prod and what seemed like 4th engaged? I took the bike up to around 45 mph and it seemed OK, I mean the revs seemed to suggest (if the Speedo is correct) that it was in fact 4th gear. Got on a straight bit of road and had a little play up and down the box, and the bike is either missing 3rd or top, I suspect it's 3rd.
Has anyone come across this before? Any suggestions welcome!
Steve.
Back to basics. Primary…
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Hi David thanks for the…
Hi David thanks for the reply.
do you know how many studs the standard Norton clutch has? Or indeed how I can tell what clutch it is? Mine has a 4 stud fixing and yes the clutch is so light it feels like the springs are either loose or non existent!
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Clutch springs
All were originally 3 spring clutches whether AMC or older Norton clutches. The only exception were the Sturmey Archer clutches on pre 1931 singles which were either a single large spring or 6 normal springs.
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Back to basics. Primary chain case off. Make sure the clutch bolts are screwed tight if it's the original type Norton clutch. It sounds like they are loose. Possibly because the AMC box has them slackened back a bit to adjust the pressure plate lift. Unlike the Norton clutch for Doll's Head and Laydown boxes where they are snugged down and the plate is lifted square by the 'mushroom'.