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early CB72 point shaft

Points Based Ignition | Electronic Ignition Upgrade
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jensen
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early CB72 point shaft

Post by jensen » Sat Mar 24, 2012 7:04 am

Hi,

Í "found" this point shaft in one of my '61 CB72 engines.
The engine is very early, with number 1100** and has a 360 degree crank and heavy weight cam sprockets. It has 10 mm spark plugs, and the 8 hole cylinder and head.
Never saw one in real live, until this week.

Not 100% sure if top end is original, but the bottom end was never opened.

A later 1961 engine with engine number 111125 has the "normal straight point shaft and a normal 180 degree crank.
Don't know if the point shaft of this later '61 engine is original or not, because there were 12 mm spark plugs, but 8 hole cylinder and head.

For sharing see pictures of this point shaft and side cover.

Jensen
Attachments
angled side cover.jpg
angled 360 degree point shaft.jpg
assembly of Japanese motorcycles requires great peace of mind (Pirsig)

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