GStwin.com GS500 Message Forum

Main Area => General GS500 Discussion => Topic started by: Anakist on September 21, 2007, 01:11:00 AM

Title: Brake rotor info
Post by: Anakist on September 21, 2007, 01:11:00 AM
I have a 96 and I want to know the PCD and offset for the front brake disc.

I don't have access to the bike ATM and my verniers have a flat battery anyway... Yay digital technology.

James
Title: Re: Brake rotor info
Post by: ohgood on September 21, 2007, 04:29:10 AM
What is a PCD and ATM ? (sorry, I don't really keep up with abreviations like I should)
Title: Re: Brake rotor info
Post by: sledge on September 21, 2007, 04:53:02 AM
PCD: Pitch circle-diameter. The diameter of the circle formed by the ring of bolt holes that hold the disc to the hub, taken from the center of the hole.

ATM:.......dunno for sure, could be "At the moment"
Title: Re: Brake rotor info
Post by: werase643 on September 21, 2007, 05:48:31 AM
ian....go drink more beer

I have no further useful help right now

most.... most     suzuki's are the same....88-2005   


why do you want this number?

Title: Re: Brake rotor info
Post by: ohgood on September 21, 2007, 09:10:39 AM
Pitch Circle Diameter eh ?

Hmm, from the description, that sounds more like 'bolt hole circle'. Or maybe they're the same, just different descriptions depending on if you're the drafting type or the machinig type ?

I've never heard it called that is all. :)
Title: Re: Brake rotor info
Post by: Anakist on September 21, 2007, 07:45:04 PM
Yeah I am looking for the diameter of the circle that the bolt hole centres are on.

I am getting a brake rotor drawn up as a dxf file and just need the size of the bolt and the distance apart.

James
Title: Re: Brake rotor info
Post by: sledge on September 22, 2007, 04:49:48 AM
PCD is the recognised term used to describe the diameter of a ring formed by at least 2 holes (tapped, untapped, blind clear etc) in a component part. e.g car wheel, car flywheel, a pipe flange or a brake disc. Never heard it called anything else............least not in my part of the world. To calculate the PCD measure from the center of a hole to the center of the disc, that gives the radius......then use pi.


kenny? I am off right now to take you up on the suggestion.....cheers matey.