Tranny Number

Blue Bomber · May 23, 2012

Hello, just purchased a 73 Commando and love it. I do have one question to start. Thebframe and engine numbers match but not the tranny. Is this normal or do I have a non orginal tranny. I live in the SF Bay area (Oakland) if anyone has any rides planned. Thanks

AussieCombat · May 23, 2012

Mine matches up, not sure if they all should.
AC.

komet · May 23, 2012

My '71 is matching.

dave M · May 23, 2012

Originally all 3 numbers should match, someone has change the gearbox shell.

mechanic matt · May 23, 2012

I also have a 1973 Commando. The frame/engine/trans numbers match but the trans has a "C" after the normal numbers. I thought the "C" might mean close ratio or competition (imagination gets a little out of hand) but all the gears are standard. I posted this question a while back but no one provided an answer. Other than this little quirk the trans number would have matched frame/engine numbers when it left the factory.

L.A.B. · May 23, 2012

mechanic matt said:
I also have a 1973 Commando. The frame/engine/trans numbers match but the trans has a "C" after the normal numbers. I thought the "C" might mean close ratio or competition (imagination gets a little out of hand) but all the gears are standard. I posted this question a while back but no one provided an answer. Other than this little quirk the trans number would have matched frame/engine numbers when it left the factory.

The factory code markings sometimes found on engines and gearboxes often signify minor production or other detail changes that were only known to the factory, those code letters are not part of the serial number-so if the 6 digits of the gearbox number are the same as the frame plate and engine then they are matching numbers.

Blue Bomber · May 23, 2012

Thanks for the replies. I do know my 850 was an early one built in May of '73, if that means anything.

ILLF8ED · May 23, 2012

For Bay Area Norton monthly rides see our NCNOC website "calendar"
www.nortonclub.com
The Mt Hamilton ride was last Sunday. Next will be June 10 Bikes on the Bay show at Soquel. This is an annual motorcycle show that includes all types...even British.

David

Tranny Number

Blue Bomber

AussieCombat

komet

dave M

mechanic matt

L.A.B.

Moderator

Blue Bomber

ILLF8ED

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