Headset Help?

Bazzowmb

Headset on my Ribble Sportive (Old style) needs replacing.

Pretty sure it is a fully integrated one 45 x 45 for a 1 1/8 steerer, but I've also seen ones about stating 36 x 45.

Can anyone tell me what these numbers refer to?

Many thanks.

g00se

It's the outer and inner angles of the bearing surfaces of the cartridge bearings.

Check out 'bearing types' here:

http://en.wikipedia.org/wiki/Headset_%28bicycle_part%29

This is the identification bible:

http://www.parktool.com/blog/repair-help/headset-standards

If you've still got the old bearing cartridges, the numbers should be printed on it somewhere...

Bazzowmb

g00se many thanks for the information.