Today I did something to my bike thread...

07Lapierre · 07-07-2025 07:43PM

https://www.boards.ie/discussion/comment/123612361#Comment_123612361

one of these takes a lot of the hammering/stress out of fitting/removing press fit BB’s: I just found this on AliExpress: €16.42 | New Bicycle Bottom Bracket Bearing Remove And Install Tools MTB Road Bike BB Press Fit 24mm 30mm BB86/PF30/BB92/BB386 Repair Kit
https://a.aliexpress.com/_EuMJHyI

smacl · 07-07-2025 09:26PM

I actually bought something like this first but all it did was tear the bearing race out of the bb leaving the shell in place. Ended up with the cruder tool and hammering to finish the job off. BB appeared to be held in with a locking compound which didn't help matters, I used grease on the replacement.

Large bottle small glass · 07-07-2025 09:37PM

https://www.boards.ie/discussion/comment/123612361#Comment_123612361

There is no upside for the end user only sh1tter performance and added cost; forgiveable in a carbon frame but utterly stupid idea in a metal frame.

I'm fitting €15 hollowtech bb for years, simple durable and cheap without fcuking squeaking.

https://wheelsmfg.com/bottom-brackets.html?srsltid=AfmBOoo36BRAJm75A744etyfP0OBux0_48eD6AfXkdm5Uqg9fxZ5sXRi

A not cheap workaround. @Mefistofelino mentioned another good manufacturer recently; although he did have to hang off the spanners to hit the required torque

You are not the first bike owner to assume their aluminium/steel frame had a standard English bottom brackets.

smacl · 08-07-2025 08:09AM

https://www.boards.ie/discussion/comment/123612961#Comment_123612961

Just to explain my last comment a bit, regarding this tool. You have to start with the 24mm outer dimension piece as it is the only one that fits past the bearing race. Using this rips out the bearing making for a wider hole. Theoretically, you shoult be able to repeat the procedure with the 25mm piece in the new hole as that is the size of the hole after stripping the bearing race. Didn't work for me as there was additional plastic in there preventing the insertion and proper seating of this bit.

Solution, one of these and a hammer, which is what I saw on any of the press fit BB extraction videos I looked at on youtube

To be fair, the press did a good job for getting the new BB installed. Again, having looked at a few videos and read a few horror stories, I did one side at a time to minimise the risk of the central section not meeting correctly. Given they're greased rather than using a locking compound this time, I expect replacing them next time to be easier.

Not impressed with the fact you have to destroy a component rather than disassemble it in order to get it out.

Mefistofelino · 08-07-2025 08:15AM

https://www.boards.ie/discussion/comment/123613252#Comment_123613252

A not cheap workaround. @Mefistofelino mentioned another good manufacturer recently; although he did have to hang off the spanners to hit the required torque

https://www.cemabearing.be/en

Would rate it above the Wheels Manufacturing one (and I like the WM one)

There is a tenth circle of hell invented for whatever ballbag invented press-fit bottom brackets. Hard to imagine that one day, somebody on their bike went "I'm having a really nice spin but do you know what would make it better? An annoying creak."

Large bottle small glass · 08-07-2025 08:37AM

https://www.boards.ie/discussion/comment/123613761#Comment_123613761

It was a financial controller after squeezing the life and budget from the engineering department.

As the auditor standing outside his vintage Mercedes coupe said " the last one of these built before they put some **** like me in charge"

smacl · 08-07-2025 08:41AM

Good to know @Mefistofelino Will definitely look at one of these next time I'm changing the bottom bracket.

nicksnikita · 08-07-2025 09:53AM

PF BBs are fine as long as the frame is manufactured properly.
If the hole in the BB shell is not round or if the NDS and DS are misaligned, thats when creaking and premature bearing wear happens.

There are benefits of PF BBs such as allowing far wider and chunkier BB areas of the frame and less drag than traditional threaded BBs.

I run an old Trek with a threaded BB and a Supersix Evo with a PF BB and both have been flawless for maybe 8k km in all weathers without being touched..

cletus · 15-07-2025 10:33AM

Taught my youngest fella how to change a chain on his bike. As always, the time is doubled, but so is the enjoyment

smacl · 15-07-2025 05:05PM

https://www.boards.ie/discussion/comment/123614003#Comment_123614003

To be fair, the old BB lasted very well for about six years until it failed. New setup is working well, though the front mech now seems to need further adjustment as dropping from big ring to small ring is only happening on second trimming click on lever. I've bought a new jagwire cable set so that's the next job.

nicksnikita · 15-07-2025 05:29PM

https://www.boards.ie/discussion/comment/123638410#Comment_123638410

There’s always something to be done!!

nicksnikita · 24-07-2025 08:02PM

Got the old Trek out yesterday. New tyres and new battery in power the metre. Did an hour on the rollers to check it over.
Degreased and waxed the chain this morning and went for a spin on the road. Still a weapon

cletus · 02-08-2025 12:44PM

There should be a thread for Today I did something stupid to my bike.

Eldest fellas hard tail is tubeless ready, and he wanted to get rid of the tubes. Bought some sealant, retaped the rims (tape wasn't great) and set it up.

I noticed numerous dings on both rims where he hit rocks, kerbs etc., straightened them as best I could, inflated and hoped for the best. After a couple of days, they started losing air. Added more sealant, same thing.

Went out this morning and thought "I've a set of wheels that came off the gravel bike, I'll just let him use those for the minute.

Blissfully spent half an hour swapping tyres, brake discs and cassette, while completely forgetting about the different hub sizes. Only realised my mistake when I went to put the front wheel on...

this.lad · 03-08-2025 08:43PM

https://www.boards.ie/discussion/comment/123614003#Comment_123614003

Dude you ever have to change the BB on the SuperSix? A bit of grating coming into the young lad's one and u have tried unsuccessfully to source one from an bike shop.

nicksnikita · 04-08-2025 01:46PM

https://www.boards.ie/discussion/comment/123694742#Comment_123694742

No, thankfully mine has been sound since new.
Isn’t it just 2x6806 bearings you’ll need to replace as per below:

this.lad · 04-08-2025 03:22PM

The one I have has bearings pressed into cups that are pressed into the frame, there's two adapters to bring it to 24mm for the shimano crsnk and then look after the width too so no wave washers etc.

nicksnikita · 04-08-2025 08:30PM

https://www.boards.ie/discussion/comment/123696302#Comment_123696302

Must be a PF30 so..

Do the bearings feel ok or are they rough? It might be just road grime between the shell/cups/bearings/adapters causing the grinding. If the bearings feel ok, you could clean up the whole area and see if that puts it right

Plastik · 04-08-2025 09:21PM

Yes, as above that's a PF30 bb. Cyclesyperstore list them as in stock Cannondale PF30 Bottom Bracket Cups And Bearings - Bottom Brackets - Cycle Superstore https://share.google/4tcqol2xpySLXwfHi

An extremely common BB. Your bike shop just doesn't want to know.

this.lad · 04-08-2025 09:49PM

Thanks folks, Cyclesuperstore is one of the shops that were less than interested. I went in and they tried to sell me a shimano pressfit BB. Then said it was a special order 150 euro.

TheTheres Definitely grinding in one of them can feel it in the bearing when you turn it with fingers in it

smacl · 04-08-2025 11:02PM

https://www.boards.ie/discussion/comment/123697071#Comment_123697071

Ridiculous price, most shimano press fit BBs are < €20 on Bike-Discount, see https://www.bike-discount.de/en/search?sSearch=press+fit+bb A bit more on amazon.ie with a two day delivery, but still mostly < €30. https://www.amazon.ie/s?k=shimano+press+fit+bb&crid=KS0IT99DK3MB&sprefix=press+fit+bb%2Caps%2C176&ref=nb_sb_ss_i_1_12

I'm all for buying Irish, but not for price gouging.

this.lad · 05-08-2025 01:37PM

Thanks folks, great help as always

magicbastarder · 07-08-2025 09:11AM

i suspect some mistake? though weird that they'd make a mistake like that on a common consumable.

this.lad · 08-08-2025 07:12AM

Very weird, especially given that they're a cannondale dealer.

gmacww · 08-08-2025 08:49AM

CSS in my opinion have gone a bit off the rails in the last 12-18 months. I brought a wheel (fulcrum) into them earlier this year for a simple truing and was told they didn't sell the wheel so they won't touch it. OK so you're basically closing your business down to 99% of cycling stock out there. I was already giving them the benefit of the doubt about something more than stupid 2 months prior to that.

Eventually had to go back into them a couple of months ago and again another bizarre experience regarding a cannondale of which as outlined above they are a listed dealer. I've since stopped bothering with them. Went down to another well known place not overly far from them who sorted me out no problem despite not having anything to do with cannondale.

this.lad · 09-08-2025 01:36PM

So I got the bearings and put them in, running like a little train it is. New brake cables, housings and jockey wheels on the other son's bike this morning too so all set 😀

oinkely · 11-08-2025 09:48AM

Sometimes you start on a job and realise that new technology is an absolute pain in the backside!

Everyday bike is a trek crossrip with mechanical disc brakes, which are worse than useless, but at least are equally bad in the wet and dry so consistently rubbish, you just know you won't really be able to stop. I had previously upgraded the shifters from sora 8 speed to claris 8 speed to get the cables all nicely tidied up. I've been using it loads recently so thought I'd treat it to a groupset improvement.

Second hand 105 11s hydraulic groupset duly purchased from adverts and a few extra bits (hydraulic hose cutter / insert putter inner, olives & barbs, hydro cable, new BB) arrived last week so i thought I'd get a start on it on Friday after the dinner.

Was looking forward to getting to grips with the new (to me) outboard bearing BB as i've only tinkered with cartriidge before as all my bikes are older.

Didn't get that far though. The feckin brakes stopped me at the first hurdle! My brakes are IS mounts it turns out with a post mount adapter or something like that - the 105 hydros are flat mount. Result was an hour or two of online research figuring out what adaptor i needed to get tehm to work together. Duly ordered from Ali express so hopefully they will work when they arrive.

Also realised the 105 calipers only work with 160 or 10 rotors. My rear one is 140, so luckily had a spare 160 in the box of bits so that is addressed anyway.

The days of regular rim brakes were much simpler!

oinkely · 18-08-2025 03:02PM

Continuing from above ……..

IS to flat mount adaptors arrived, so some progress made. Bike currently has two new callipers installed (but not connected or bled yet), new rear derailleur, new front derailleur (also required an ali express adaptor cause the 105 one doesn't have a band on it and the old claris one did). Old shifters removed and new ones fitted, but no hydro hoses connected yet. Got the rear derailleur cabled up and shifting well, so moving on to the front when i have a bit of time this week.

Got to grips with the new style outboard bearing BB and the cranks are mounted too. Just as simple really as the old style square taper / isis ones once you have the right tool. Thankfully it was BSA threaded and not press fit!

11 speed 11-34 cassette fits nicely on the old 8/9/10 speed HG hub so glad i did some research on compatibility in advance for that one.

One issue I ran into on the brakes (another one!) was the mount adaptor pushes the calliper out enough that a 160 rotor won't fit anymore, so ordered a 180 which arrives tomorrow. This yolk should stop in a second with this level of stopping power added!

So good progress made.

cletus · 18-08-2025 03:48PM

@oinkely I'd be interested in the front derailleur adaptor, if you have a link.

oinkely · 18-08-2025 04:01PM

https://www.boards.ie/discussion/comment/123733294#Comment_123733294

I just searched 'front derailleur hanger' or something similar on ali-expresss and picked the correct diameter one for about 4 quid or so. Threw in some titanium QR skewers and carbon headset spacers to bring it up to free postage. took about a week to get here. if i can find the link i'll stick it up here later on.

nicksnikita · 18-08-2025 09:34PM

https://www.boards.ie/discussion/comment/123733294#Comment_123733294

must be one of these: braze-on to band-on adapter

Today I did something to my bike thread...

Comments