comstar wheel PCD

[chickenStripCharlie]

hi guys,

Can someone confirm the PCD of a dual disc comstar wheel. I believe it came off of a 1982 CB750C.

I have measured stud-to-stud of 46.15mm. For a 5 bolt pattern this gives a PCD of 78.5mm

However a more realistic 78mm would give me stud-to-stud of 45.85. So i need to know if the PCD is 78.5 or if i was off by 0.3mm in my measurement somewhere

Thanks!

EDIT: This is a REVERSE comstar, 19" wheel.

Looks exactly like this one:

 

[Jimbonaut]

What the hell is PCD? Let me know and I'll measure my comstars for you mate

 

[irk miller]

What the hell is PCD? Let me know and I'll measure my comstars for you mate

PCD is the bolt pattern for a brake rotor. Diameter of center-to-center of rotor-hat mounting holes.

 

[chickenStripCharlie]

PCD is the bolt pattern for a brake rotor. Diameter of center-to-center of rotor-hat mounting holes.

It would help if I wasnt retarded and called it wrong.

What I meant was BCD, not PCD

BCD = Bolt circle diameter

 

[Jimbonaut]

Hmm, sounds...mathematical. Don't hold your breath mate but I'll see if I can come up with something.

 

[irk miller]

It would help if I wasnt retarded and called it wrong.

What I meant was BCD, not PCD

BCD = Bolt circle diameter

PCD is the correct term. Pitch Center Diameter


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