SOHC.co.uk Forums > CB500/550

Were 500 casings originally polished alloy or sprayed with Aluminium paint?

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Cappodimonte:
I was under the impression that Honda and other Japanese Motorcycle producers used Mazak extensively as it was easier and cheaper to mould into intricate shapes. The trade off being that it doesn’t weather very well hence the use of paint to provide protection from the kind English elements of rain,frost,snow,fog and ice.
Feel free to correct me if I’m wrong.

Sesman:
As it happens I own an original unfettled alternator case, chain case cover and clutch cover. What do I do to settle the debate? They are in fact 1977 550 F2 cases, so may only settle the case for that specific model and year?

SteveD CB500K0:
I’ll be the first to ask.

Mazak?


Sent from my iPhone using Tapatalk

SPR:

--- Quote from: SteveD CB500K0 on October 23, 2022, 09:13:22 AM ---I’ll be the first to ask.

Mazak?


Sent from my iPhone using Tapatalk

--- End quote ---

Also refered to as Zamak ?

McCabe-Thiele (Ted):
ZAMAK being a mnemonic made  from the metal ingredients in German says Mr Google.
Aluminium, Zinc Magnesium And Copper

So MAZAK  works as well.

ZAMAK (or Zamac, formerly trademarked as MAZAK) is a family of alloys with a base metal of zinc and alloying elements of aluminium, magnesium, and copper.ftp://

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