Langster Integrated Headset Question.

I've just acquired a red and white Specialised Langster, possibly 2016 or 2017.It has an integrated headset with two sealed cartridge bearings which are the same size top and bottom in the head tube.

Does anyone know the correct size of replacement cartridge bearings, please as the originals are a little 'notchy' and need replacing?

Thanks...

Read the numbers printed on the side of the bearings

There is nothing ledgible on either of the bearings wear and corrosion have removed all traces!

You'll most likely be fine with any cheap integrated headset
https://www.wiggle.co.uk/ritchey-comp-drop-in-1-18-inch-headset
Ritchey and FSA usually do cheap but decent options

If there’s no cups and bearings just sit directly in the frame then it’ll be either campy standard or the other one.

Campy bearings are slightly larger od so if you have a decent vernier then you could confirm.

If it’s the other one then there’s a couple different angles but tbh, every integrated headset I’ve come into contact with has been Campy standard so I’d start there.

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

Thanks for the help guys I'll take the bearings out again and measure them.I did dismantle each sealed bearing cleaned and regreased them and they do spin fairly smoothly now,but it's just a temporary fix until I get replacements.

I did find Tange Seiki etched on the underside of the cone spacer,by the way if that offers any more clues as to the bearings..

I have measured the bearings and come up with the following;

External bevel 45 degrees

OD 41 mm

ID 30.15mm

Thickness 6.5mm, and internal bevel as best as I can judge using a business card place inside the bevel, with both edges contacting the bevel and apparently flush with no visible gaps also 45 degrees?

Does this to the knowledgeable sound right?

Yes:
1-1/8" 45/45 (not campagnolo)

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Thanks! :-)

Interesting you've had this pickle too.

I have an HP sauce coloured langster which I think makes it a 2007 one and it seems to have a funny headset thing too.

I don't own any headset tools so gave it to a bike shop to figure out for me. Ever since everything's been ok but the headset has felt a wee bit loose ever since no matter what I do.

I think your Langster was originally fitted with a 'mindset' headset which were and are considered to be very poor? The headset in my particular Langster is a conventional integrated headset a very simple set up. The only difficulty arises when it's time to replace the sealed cartridge bearings if the etching is no longer visible to inform of the size and type, then measurements must be done by hand hence the above posts.

If yours is indeed fitted with the mindset headset it would be worth changing it completely, especially if it is still proving to be problematic?

This link will take you to an article explaining how to remove and replace the mindset headset no special tools are really needed just some care and patience.

https://forum.bikeradar.com/discussion/12963941/how-to-replace-a-specialized-mindset-with-sealed-cartridges

Just wanted to say thanks for posting this table.

About 18 months ago my mate asked me to replace the bearings in his Langster headset. Pretty sure it was the same model as OP i. e. Red 2016

He had bought two different sets of bearings but neither of them fitted.

I eventually found this thread but suffered from a bad case of procrastination as in the mean time he had bought another commuting bike so there was no time pressure.

18 months later fed up of staring at this bike in my garage. Usual story was that the original bearing were totally shot, rusted and fallen apart so I couldn't read the details on the bearing shell.

So using the table/flowchart and my newly acquired for the purpose digital vernier gauge I identified that the correct bearing as ACB3645.

These are available at a good price from Bearings R us and they arrived within two days and have been successfully fitted along with the new brakes, hoods and cables.

Still cleaning a lot of grease off it (separate post) but bar tape next and it's done and can roll out of my garage and free up some badly needed space.

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Thanks for this, my LBS could not find the parts and tried to bodge it.

Now this is interesting as on here it is mentioned the IS 42 is the standard bearing size to use.

Does that mean the widths are different

Oh looking at the chart further up, that means the chamfer on the bearing is 36degree is that right for the fork.

Sorry missed this. Which one of these measurements are you meaning by the width?

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Well it's right for the crown race that sits on top of the fork

I mean the 8mm at the top and 6.3 on the bottom of your diagrams.

As for the crown race, I'm going on what others have used and what was on the fork.

I have little idea, as mine has had the bearing replaced sometime in the past.

Am more confused than before.

You know you can just email Specialized and ask?

https://forum.bikeradar.com/discussion/12963941/how-to-replace-a-specialized-mindset-with-sealed-cartridges

I could, and be told to buy the semi sealed set that specialised supply with the bike.

All the links, from here and that one, mention differing heights/depth of bearing in the frame so needing between 0.5 to 3mm to meet the topcap So does that mean that the heights of bearing differ.

From what I understand is that the IS42 standard is the frame size of 41.95mm to 42.05mm but the depth of bearing differs from 6mm, 6.5mm, 7mm and 8mm.

Bought this IS42 standard https://www.planetx.co.uk/products/selcof-integrated-cartridge-bearing-headset-for-straight-1-1-8th-fork-steerer these bearings are CBB418 41.8 outer, 30.2 inner and 45 degrees edges and 7mm depth. This is outside of the is42 spec. A quick google of the bearing reference doesn't give the same dimensions as these selcof and none of the other references match IS42 standard ffs. What is the point of a standard if it isn't followed by other bearings.

Tho I am going to lift the seals and overfill the bearings with waterproof marine bearing grease. Believe that will add extra waterproof properties.