I have the cheap GXP press fit BB and its on its way out so I'm going to fit the Hope PF41 instead. All on order, including the tool and the GXP conversion kit.
As the title says.. any advice on the best way to remove the old BB would be appreciated. I was thinking a good drift and hammer would do it ?
I used my headset removal tool and it worked fine, so I imagine a drift and a bit of care would do the job.
So if I drift against the back of the bearings will that force the cups out ?
So if I drift against the back of the bearings will that force the cups out ?
You need to drift against the cups, not the bearings (which will explode if you do)
You need to drift against the cups, not the bearings (which will explode if you do)
You can drift against the cups then ? I can't get my head round how they'll be exposed with the tube sitting between the cups.
Easiest way will be to wait til the new BB arrives and examine it - you'll be able to see where you can tap against.
Since I have a few bikes with press fit BBs I invested in this. Removes and fits press fit BBs. Well worth it.
One's I've had have a join between the plastic cup and inner sleeve, that is easy to press down to get purchase against with a screwdriver. A blunt punch like that one in the picture above is the proper tool.
"Best" way is normally a puller, if you just want the BB out then just knock it out, a removal tool or a punch both work (with some common sense and care)
Update...
This tool doesn't work. It's diameter is too big to go through the BB with the bearing in so that's been returned. I just used a drift and hammer. On one side the bearing popped out and on the other the cup and tube popped out so you could just remove the remaining cup with the drift too. Took all of 2 minutes.
For anyone installing a Hope press fit BB and following the video instructions, when he says don't over tighten the bearing press and stop when it stiffens up, don't over tighten the bearing press ! especially on the non drive side with the GXP conversion kit. Thanks to Twelve 50 bikes for sorting me out with a replacement for my crushed bearing !