Cycling UK Forum

Also I think when I have gone about cranking and being violent to this one, with the drill, I think I could have hurt some of the threads. So to be out in good time, if someone has a link to a non threaded bottom bracket on ebay, aliekspress or temu? That would be nice since maybe I might need one of those when I eventually get this one out. Thanks

I have now managed to pull the last energy out of my body and gotten the drive side of. I used a big leverage pipe on a wrench as the pictures show. I also used the tip on pressing the thing into the frame first to have it in place.

But.. Now I also need to remove the non drive side. And this one is stuck even harder than the drive side I think. Issue is that I do not get a good grip with the removal-tool. Because I have drilled and sawed and massaged. So these holes where the tool should fit into are not as firm as before.

So when I crank on it like crazy only the tool rotates not the crank in there. Not sure how to solve this. Maybe sawing it with a really sharp saw or something into the middle so it then can be collapsed inwards against itself?

Or.. Maybe I could glue the remover onto there? WIth Tec7 or something?
In this video you can see the side I have removed and at the end I film from the bottom. On the other side where it needs to be removed from.
https://www.veed.io/view/dea2d71a-22fb- ... anel=share

mongoose wrote: ↑4 Oct 2024, 8:35pm I suggest that you apply penetrating oil to both bottom bracket cups and leave it overnight to work. Remove the non-drive cup first - it is usually much easier.

To avoid the bottom bracket tool slipping and damaging the splines, clamp the tool to the bottom bracket either with a bolt through the tool into the axle or a big G-clamp with one end on the tool and the other on the opposing end of the axle [that's what I find normally works. You will probably need a much bigger spanner - a 1.2m long scaffold tube over the spanner should work.

Aa sounds nice. Just have to find which way to screw. Clockwise or non clockwise on the non drive side?

thanks

Mike Sales wrote: ↑4 Oct 2024, 7:35pm

-Cyclist- wrote: ↑4 Oct 2024, 7:22pm

AndyB1 wrote: ↑4 Oct 2024, 6:37pm Just a thought - one end of the BB has a LH thread, the other a RH thread. I always look at a new one to check which is which. Easy to get it wrong and be tightening it!

Aha so they are basically quite similar to pedals? One left threaded and the other one right threaded or something like that?

Yes, but opposite. The left pedal is left hand thread, but the right BB cup, on British made bike, is the left handed one.
This is down to precession.

So the non drive side should it be removed by screwing clockwise or is it the other way around?
Any way to know which to screw which way?

thanks

Brucey wrote: ↑4 Oct 2024, 6:12pm if you use two hammers to 'massage' the BB shell (ie. use the head of one hammer as a bolster against the BB shell, whilst using the other one diametrically opposite) you should find your rusty BB gives up without too much of a struggle, once the 'massage' has been done on all sides. You will probably have to use a longer spanner though.

Aa interesting. Kind of hammer in the middle but not at the exact spot where the threaded outer screws are? Is that how you mean? Or do you mean the frame around the bottom bracket kind of?

AndyB1 wrote: ↑4 Oct 2024, 6:37pm Just a thought - one end of the BB has a LH thread, the other a RH thread. I always look at a new one to check which is which. Easy to get it wrong and be tightening it!

Aha so they are basically quite similar to pedals? One left threaded and the other one right threaded or something like that?

So I need to change this bottom bracket of mine because it is no good and the pedal arms are loose. And then after switch to a new one.
Only issue is it is stuck there. Sits hard as a mountain.

I have tried squirt fire on it, rust loosener and bigger leverage to really crank on it. But it does not want to come off.
Any idea how to get it off? Perhaps drill it out with a big metal drill bit or something?

Is in link here:

https://www.veed.io/view/3ad37a41-4d22- ... anel=share