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Throttle Slides

 
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norton72
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PostPosted: Tue May 04, 2004 2:21 pm    Post subject: Throttle Slides Reply with quote

Hey Folks,

I just received two new throttle slides and have a question about the sizes. The previous ones I had installed had the numbers 928 3 MB2 stamped on them. I know that the numbers 928 and 3 relate to the size of the carb but what does MB2 stand for? The reason I ask is that my two new ones each have a different number, MB3 and MB4 stamped on them. I'm a little concerned about this since the number do not match. Any help on this topic would be appreciated.

Thanks,
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norbsa48503



Joined: 07 Apr 2004
Posts: 995
Location: Flint, Michigan

PostPosted: Wed May 05, 2004 10:14 am    Post subject: Reply with quote

I would be guessing that the numbers that are making you wonder are casting lot numbers. They are used for quality control at the plant were they ar produced. If you want to know if you have a matched set simply trace the cutaway portion of the slide on to a piece of paper using known referance points like the top of the piece of paper flush with the top of the slide and the edge that is 90 degrees to the top starting at the back edge of the key on the side. Then lay the tracing onto the other side and check to see that they are the same cutaway. If you are trying to built a matched set of 928 you have a lot more to worry about. You need brass needles with viton tips , matched float hieghts, gaskets Fresh needles and needle jets and a very clean piolt curciut. You may need to check your banjo bolts to see that the cross hole is 3/16 and the core hole is 5/16 and they have the right amout of thread some need two threads removed from the lenghth. Make it so. norbsa
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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.