Headset for BTWIN ultra 700 af

[miklos]

Hi

I believe this is the headset I need for this bike

https://www.decathlon.co.uk/p/semi-built-in-tapered-1-1-8-headset/_/R-p-197386?mc=8523750 - according to someone on another forum

The lead time is a couple of weeks, does anyone have any idea where I could get something similar

Best Regards

Miklos

 

[fossyant]

If you can extract the bearings, you'll usually find markings on the side if lucky - if not, they may have worn off. Wych bearings stock loads of suitable bearings, but you'll need the code. Alway's worth writing the codes down and tucking them away in your tool box. I did that recently with one of my bikes as the codes were starting to wear off the headset. Tucked the codes away in a box of spares.

 

[I like Skol]

If you can extract the bearings, you'll usually find markings on the side if lucky - if not, they may have worn off. Wych bearings stock loads of suitable bearings, but you'll need the code. Alway's worth writing the codes down and tucking them away in your tool box. I did that recently with one of my bikes as the codes were starting to wear off the headset. Tucked the codes away in a box of spares.

I've gotten into the habit of doing this when a bike or headset is new. Once corrosion gets it's way with the bearings the numbers are more often than not illegible.

 

[I like Skol]

Just remembered, had to do this for @nickyboy a few months ago. He needed new headset bearings for his carbon Btwin bike but didn't know what. Luckily I managed to extract the stubborn stuck/rusty bits and measure sizes and angles well enough to i.d the correct ones.

 

[fossyant]

I've gotten into the habit of doing this when a bike or headset is new. Once corrosion gets it's way with the bearings the numbers are more often than not illegible.

I kept meaning to do it with the Boardman, only on a recent overhaul did I get them, and only just.

 

[miklos]

Thanks, but I don't think there is much left of the headset bearings at the moment as the steering is pretty rough and I dont want to be without the bike as I use it for commuting. I'm pretty sure thedecathlon ones are the correct part, I just wondered if I could get them anywhere else

 

[nickyboy]

@dhd.evans
https://www.cyclechat.net/threads/replacing-headset-bearings-help.265662/#post-6100673

As luck would have it he recently did a thread on same topic. I advised (I have the CF version) but read his thread. Aire Bearings are very good

 

[iluvmybike]

Kinetic bearings. If you cannot see the markings then measure inside diameter, outside diameter, height and angle

 

[miklos]

@dhd.evans
https://www.cyclechat.net/threads/replacing-headset-bearings-help.265662/#post-6100673

As luck would have it he recently did a thread on same topic. I advised (I have the CF version) but read his thread. Aire Bearings are very good

Much appreciated, That's where I seen the link, I have not replaced a headset before so not sure how may bearing I need for the job. Looking at the piccy from decathlon, there are a few bits to fit.

If I buy the aire bearing , do I need anything else?

Regards

 

[I like Skol]

Just the 2 bearings, don't know what all the other bits are, unless you are building up a new bike without a headset already installed.

 

[miklos]

Just the 2 bearings, don't know what all the other bits are, unless you are building up a new bike without a headset already installed.

I believe it's a tapered headset, so both top and bottom bearings are the same size?

 

[I like Skol]

I believe it's a tapered headset, so both top and bottom bearings are the same size?

In my experience top bearing is a smaller size than the bottom one.

 

[iluvmybike]

If tapered bottom is always bigger than top