MKII or MKIIA

limeyscoot · Mar 24, 2008

What determines the difference between a 74 Norton 850 Commando Roadster MKII and a 74 Norton 850 Commando Roadster MKIIA?
Is it the place of manufacture or the Ser#, All my numbers match. #308657.
Stan.

L.A.B. · Mar 25, 2008

limeyscoot said:
What determines the difference between a 74 Norton 850 Commando Roadster MKII and a 74 Norton 850 Commando Roadster MKIIA?

The differece is that both 'A' model MkIs and IIs have the black cap/bean can silencers/mufflers and black plastic airbox with different carb spec.
I don't think records exist to tell which serial number machines were built as which models, unfortunately.

79x100 · Mar 25, 2008

The "A"s (was it for 'Acoustic' or 'Annular Dicharge' or something ?) were introduced in response to strict European (mainly German) noise laws and based on the catalogues, the U.S. brochures show straightforward Mk2s and the UK and European language versions show the "A" variant.

The majority probably followed the theory but exceptions were sold in both markets. So far as I can tell, John Player Replicas were always 2As and Hi-Riders never were.

grandpaul · Mar 25, 2008

Not so much. I had a '75 High Rider with annular discharge (bean can) mufflers.

79x100 · Mar 25, 2008

grandpaul said:
Not so much. I had a '75 High Rider with annular discharge (bean can) mufflers.

Was that a Mk3 ? They were all 'bean can' models, Hi-Rider an' all.

According to the UK / Europe brochures, the Mk2 Hi-Rider was not normally available outside the U.S. and Canada and it was illustrated with a non-'A' model.

MKII or MKIIA

limeyscoot

L.A.B.

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79x100

grandpaul

79x100