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Wheel Offset on '73 Commando Roadster

 
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Vosper
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PostPosted: Tue Jan 20, 2004 6:43 am    Post subject: Wheel Offset on '73 Commando Roadster Reply with quote

Hi Guys,I am posting this for a friend. Anybody know or know where I can find the info on the correct wheel offset for this model? Please excuse my ignorance....I ride BMW's..:0)
He is re-spoking with Stainless steel spoke s and nipples and he ( we) didn't measure the offsets before we stripped the wheels down. Thanks for any help.
Stephen
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illf8ed



Joined: 30 Dec 2003
Posts: 472

PostPosted: Tue Jan 20, 2004 5:38 pm    Post subject: Wheel offsets Reply with quote

This is on the NOC website at www.noc.co.uk


Thanks to everyone who responded with measurements of their wheels. While waiting for responses, I was able to find someone who has built a fair number of wheels who gave me copies of his notes about the correct offsets. I also spoke to Ron Fratturelli of British Marketing who gave me quotes from the specs they have there at British Marketing.

The specs are 1/2" from the hub rotor flange to the rim for the front, and 1" to 1-1/16" from the edge of the hub on the cush drive side of the rear wheel to the rim. That puts the rear rim in the centre of the swinging arm.

The fascinating part of this exercise is that several people said their front rims were centred in the middle of their forks (or felt they should be centred). Neither my wheel, nor the specs. have the rim centred in the forks; it has an offset of about 3/16". I don't know if this is a Mk.lll specific offset or if all front disc-braked Commando rims are supposed to be offset.

John S. Morris (jsm@mediaone.net) on NOC-L 4th. Oct 1997
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Vosper
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PostPosted: Wed Jan 21, 2004 6:32 am    Post subject: Reply with quote

Thanks very much. That should keep him happy.
Stephen
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max600



Joined: 13 Apr 2004
Posts: 2
Location: Birmingham, AL

PostPosted: Tue Apr 27, 2004 5:24 am    Post subject: Wheel offset additional Reply with quote

I am looking for similar information but I am building a non-standard wheel. Does anyone have the hub offset for a '71-'74 rear drum calculated from the centerline of the rim. I have changed from a WM2 to a WM4 and did a similar thing as 'Vosper'. I cut the wheel down before taking full measurements. I already know that many say WM4 is too much so please don't flame me. I have probably heard it before.
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The Unapproachable Norton Commando

At the end of 1967 the Norton Commando was announced.

The Norton Commando was greeted with a certain amount of scepticism because on first sight the commando appeared to comprise of the old Norton Dominator twin cylinder engine mounted at an inclined angle in a set of new cylinder parts.

It was not realized that the new Norton Commando Isolastic method of engine suspension damped out all engine vibration and produced a machine which had uncanny smoothness for a vertical twin. In due course the critics were silenced and the Norton Commando had the distinction of being regarded as the first of todays so called superbikes. There can be little doubt that the original design concept of the Norton Commando has proved correct, since comparatively few modifications of any real consequence have been made since production commenced during 1968.

Now nearly 40 years later Norton Commando riders like us are a breed of our own, and as far as we are concerned its still more fun to go for a blat on the old Norton Commando, and fast. As a Norton Commando owner and enthusiast, my goal here is to promote and give credit to those who keep the Norton name going.

It is more deserving to give credit to the Commando itself, for after all these years it continues to be respected. The original Commando designers like John Favill are those who deserve the credit for developing this incredible motorcycle.

The Norton Commando Roadster and Interstate of the late seventies, never died. Although the Norton Villiers factory dispersed the tradition lived on. Today Kenny Dreer in the USA is developing the new 952 CC Norton. What a great looking bike this is, and its engineering is still based on the original layout. It will be interesting to see how the new 952CC Norton does in todays tough motorcycle market. One thing is for sure, I would own one if I could afford it.