Play in bottom bracket

[Jimmy Welch]

Morning lads
My pals bike seems to have latterel movement in the BB area , it's a 105 crank and chain set

View: https://youtu.be/dNuCkiRq4zI

 

[Cycleops]

That’s a lot of play. Is it a Hollowtech or pressfit bottom bracket? If it’s Hollowtech it’s a simple replacement for around £15 if it is just the bearings. If it’s pressfit it may be a more complex problem and you won’t know until you remove it.

 

[Jimmy Welch]

Hi it's a press fit 100%

 

[Cycleops]

Then that’s rather worrying to have that much play. He’ll have to remove it to find out.

 

[Roseland triker]

Hi it's a press fit 100%

Burn it out with the butane gas but you need to put some shoes on

 

[Jimmy Welch]

Burn it out with the butane gas but you need to put some shoes on

Just got back off my morning Ride and he's left his bike with me as I said there's some savvy lads on here who'll have the answer

 

[Roseland triker]

Just got back off my morning Ride and he's left his bike with me as I said there's some savvy lads on here who'll have the answer

Well there you go.
Seems logical captain

 

[Cycleops]

You're going to need some tools to remove and refit unless you make some. YouTube is your friend. The replacement bearings need to go in square so you'll need to make up a press with some threaded stock, bolts and washers. Tap them out evenly with a wide end steel bar. Otherwise it's a special tool.

 

[Jimmy Welch]

You're going to need some tools to remove and refit unless you make some. YouTube is your friend. The replacement bearings need to go in square so you'll need to make up a press with some threaded stock, bolts and washers. Tap them out evenly with a wide end steel bar. Otherwise it's a special tool.

Yes Ive seen the videos of press fit out and press fit it , my own bikes is aware taper peice of cake , but the press fit looks like something from the Spanish Inquisition best take it the LBS , take it there's no quick hack , tightening a bolt there or , spray wd40 here etc ?

 

[Roseland triker]

If you heat it up it will get tight. Then bash it with a hammer while pouring iced coffee on it .
When it shrinks as you bash it the iced coffee holds it in tight again.

 

[Cycleops]

Once the bearings have gone that's it, you need to replace them. There no quick fix.
Press fit was pioneered by Cannondale who one day sat down down with the devil and agreed to sell their soul for a new cheaper easier BB system. This was the result.
I should take it to your LBS for the repair, given the problems you might have with the replacement like squeaking. I'm sure you want to remain mates with your friend 😉

 

[Twilkes]

When it works properly, pressfit bottom brackets can be the best performers from a weight and stiffness point of view, it's just that they quite often don't work properly. This is usually due to loose manufacturing tolerances and errors when installing.

@Jimmy Welch I have the pressfit tools you'll need if you want to give it a go yourself, can pass them on for a couple of quid, my BB30 bike got nicked unfortunately. It's very rewarding to do stuff like this and not really difficult, and if you take it steady you can sometimes do a better job than an LBS who might cut corners and leave you with problems further down the line.

Edit - actually, maybe not if it's not your own bike, I've rarely had a positive experience trying to fix stuff on other people's rides!

 

[Jimmy Welch]

That's dam decent of you , this is my pals bike , mines a square taper so I've got the tools , and if I don't get it right and it's a carbon frame and I don't have many mates , I don't want to loose another , but that's really very kind of you , but it's a one off so I'll let the LBS take the strain on this one

 

[Twilkes]

That's dam decent of you , this is my pals bike , mines a square taper so I've got the tools , and if I don't get it right and it's a carbon frame and I don't have many mates , I don't want to loose another , but that's really very kind of you , but it's a one off so I'll let the LBS take the strain on this one

Yeah I'd already edited my post to imply that. I'd always encourage people to maintain their own bikes though, even if it means buying tools, once you understand how things work bikes are actually quite straightforward to fix.

 

[Cycleops]

Fair enough when working on your own bike but when it comes to other people's unless it's very straight forward it's a different matter.