Topic: K0 front brake disc identification

[Swoop]

Howdy,
Do any of you K0K0 nuts out there have any idea how to tell the difference between a K0 disc and a later disc?
I have a number of them and that all have different numbers and stampings on the outside inner face.
Thanks in advance.
Steve

[754]

The aluminum centre piece..look at the outer edge..does it taper off to a point, or is it a square edge ?
 If the periphery is square..its KO..

[Patrick]

The K0 disk is also smaller in circumference to the later disks.

[kmb69]

The K0 disk is also smaller in circumference to the later disks.

Pretty sure they are the same diameter. Will double check tomorrow and report back if I'm wrong.

[scottly]

The K0 disk is also smaller in circumference to the later disks.

Pretty sure they are the same diameter. Will double check tomorrow and report back if I'm wrong.

I thought they were the same, too. In any case, here is a pic of the most visible feature that Frank mentioned:

[CycleRanger]

Here's another shot of a K0 rotor.

[Swoop]

Thanks Frank...and the rest of you
I have it figured out now. Seems that I have one...but may need a bit of resurfacing.
I have heard that it is not easy to do. What kind of equipment would be used to resurface? Is it even doable?

Thanks

Steve

[754]

Blocksanding on a lathe can do wonders..surprising difference.
But if borrowing a lathe make sure its okay..i very rarely sand on my lathe, and cover it all up if I must.
 A lot of the grind resurfacers out there get a finish that never came out of Japan.
 I was trying to set up to do a factory type regrind..but its on hold right now..