SOHC.co.uk Forums > CB750

A question i can not answer.

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Trigger:
Why was the early CB750's fitted with a chain guard up to about 104*** ? but, later units never had them .

Sgt.Pinback:
Better chains later with o-rings that did no longer tend to break?

Woodside:
So it was a chain reaction?

paul G:

--- Quote from: Woodside on December 13, 2016, 07:33:31 AM ---So it was a chain reaction?

--- End quote ---

 ;D ;D

flatfour:
Probably quite wrong, but I always thought that the chain breakages were attributed to a front sprocket with too few teeth on it and so forcing the chain to change direction too quickly. I have always understood that later bikes had an extra tooth on the front sprocket? Certainly this problem has manifested itself many times in the automotive world where cam belts are concerned and the answer has always been to increase pulley diameters.

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