Broken Primary Chain

[Janet]

I hesitate but.....

If a split link is good enough for a rear chain, with greater force acting on it and thrashing about in the wet and grit-soaked atmosphere, why is it not good enough for a primary, living as it does a cossetted life in a nice warm and protected oilbath?

I think it's probably because the primary chain tends to be smaller and therefore more delicate. A bit like me.

[Merlin]

Small and delicate mmmmmmmmmmmmmmm

[iansoady]

I think it's probably because the primary chain tends to be smaller and therefore more delicate. A bit like me.

1/4" rear chains were enough for Nortons up till the Commando (including the Manx) so am not convinced....

I do see from my 1954 parts list that both primary and rear chains were supplied with a split link.

[boyd]

Does anyone know if the chain available from the club site has the split link? I'm just back from an unexpected trip to a Australia and I can't wait to get back in the road.

[Stuoyb]

The chain supplied by the club is "endless" as per original design.

[iansoady]

The chain supplied by the club is "endless" as per original design.

Not according to the manual:



From the 1954 singles manual.

[Stuoyb]

This is for a lightweight!

[ajscomboman]

If you really must risk using a split link try Andrew Engineering, they list both single and duplex L/weight primary chains with split links.
Google Andrew Engineering(Leigh) Ltd

[iansoady]

This is for a lightweight!

No it's not, it's from the 1954 singles manual as stated.

And as I mentioned earlier in this thread, it's specified with a spring link in the spares book.

[ajscomboman]

No Ian, this thread relates to a L/weight hence Stuarts reply!

We know the heavyweights use a spring link but that is not the issue being debated here.