Ok so when it comes to headsets im a bit of a muppet.

My 2010 stumpy fsr has a bit of a problem with the headset, I looked at the original spec ++ as follows

1-1/8 and 1.5 inch Threadless, Campy style upper and 1.5 inch lower cartridge bearing

Can somebody please explain what this means and how it helps me get another one. I have taken it apart and there is a wee crack in the upper section so defo another one is required.

sorry for being a diddy, just a bit stumped at the mo….

nobody 🙁

I assume it’s a tapered headtube. Is the fork?

No its not tapered, its a 140mm Fox float RL, bog standard 1 1/8 steerer.

Please define

there is a wee crack in the upper section so defo another one is required

Is the crack anything like the two silver bits in middle of the pic in this for sale thread?

http://singletrackworld.com/forum/topic/fs-hope-44mm-integrated-headset-for-118th-forks

That is normal.

Take knackered headset to lbs and present it to them.
They will know what to replace it with.
Buy new headset from lbs thanking them for being knowledgeable and helpful.
Everyone happy.

Rusty, no its just a small but very clear surface crack.

Don, that is usually my way of doing things. In fact they have my bike at the moment fitting new brakes but im just trying to get my whole biking knowledge a bit broader and to be honest headsets and their sizing does confuse me. But maybe i am easily confused 😀

😀

It’s a ballache of a subject, your lbs will give the info you need and I don’t think it’s really worth wasting time on unless you work in a shop.
There are too many subtle differences. I’ve got four bikes running 3 or 4 different headset systems.
Good luck. 😉

Email me if u want. See profile.
I have a PDF with a diagam the details of stumpy tapered headset spares and the bits you might need somewhere. There are also spacers according to the lower bearing position. The top part… I think… Is pretty generic…

Could email it tonight if u want.

Don, roger that 😀

Stoatsbrother, email coming your way. Thanks all.

And the spec sounds strange. Being stupid but that sounds like 2 different specs at the top. Misread your post as saying it was tapered. Because part of your spec sounds like my tapered 2008 stumpy…

Ok, to the best of my knowledge this is how i’d define the headset.

1-1/8 and 1.5 inch Threadless, Campy style upper and 1.5 inch lower cartridge bearing

TOP CUP

1 1/8 campy style (i believe this is just another way of saying Intigrated headset)

You will be able to tell if it is an Intigrated headset as the upper cup(the bit the bearing sits in) in your case it will most likely be formed into the frame and not a removable part.

LOWER CUP

1.5 inch lower cup with reducer to take strait 1 1/8 forks, i can not tell from the pictures i have seen of the bike if the lower cup is internal or external.

Hope now do pick and mix headsets so that you can buy the correct bits for your bike. Take a look at this document that takes you through the full range of headsets they do. This will hopefully help explain what you have but please don’t take it as gospel.

http://www.hopetech.com/webtop/modules/_repository/documents/HOPEHEADSETS2011Web.pdf

The top cup like this is normally referred to as ‘zero-stack’ or semi integrated. Shouldn’t be too hard to get a new headset as it is quite popular now but best check that the specialised head tube diameter is definitely that spec.

The 1.5″ bottom headset standard has two options – no lower stack with the bearing contained within the head tube (in the headset cups) or a stack version where the cup extends out the bottom and the bearing sits in the outside bit. You need to get the right one as it will effectively make your fork a-c measurement too long or too short if you get the wrong one.

The Park Tools website has a great guide to all the standards if you want to learn more about headsets.