SOHC.co.uk Forums > CB500/550

Primary chain and rubbers

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Sesman:
I managed to pry them out with a pick. All reassembled now. I’ll keep the old stuff as you suggest as it’s got lots of service life. May save somebody’s build in the future.

Incidentally, just been quoted £300 + vat to blast the head, cylinders and cases ready for paint. That won’t be happening…Wow

Sesman:
For,those who may be interested, images of new vs old hy-vo chain.

Original was a tm-hy-vo. Replacement claiming to be Kawasaki is a Morse.

Sesman:
For my education, the chain supplied by msg is claimed to be an ‘original part manufactured by Kawasaki “. So ‘Morse’ is owned by Kawasaki?

I thought Morse was an American company? Is Morse a genuine Kawasaki primary drive chain part?

K2-K6:
Kawasaki is a significant engineering company,  but wasn't aware of Morse ownership. Possible though.

Quite an interesting history though for the chain type, often referred to as "Morse" from multiple link plates effectively making a linear gear.
Think that Borg Warner transmission holds the rights to the "Hi-Vo" description as they developed it to that high velocity iteration from Morse foundation.  Tooth form etc was intrinsically part of that research and development.

K2-K6:
Some thoughts on it here http://www.sohc.co.uk/index.php/topic,25001.0.html

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