leicaman
Maximum Pace
- Sep 20, 2012
- 2,878
- 2,698
Hi all
I was wondering if anyone could shed some light on what is best to use when installing a shimano pressfit BB92-41. I've recently been having some problems with a creaky BB. Last week I took the crank out and regreased the contacts between the crank and the BB. I didn't realise it at the time, but when I pulled the crank out, the drive side BB shell came out with the crank. It's obviously not a tight fit at all which it probably why I'm having creaking issues.
After regreasing everything and putting the crank back in , it was silent for one ride. Halfway around my ride on Saturday it started making a noise again though . I once again pulled out the crank to regrease it (I used really crappy grease the first time round) and then realised that the drive side BB shell had come out too. I'm pretty sure the BB should DNA very tight fit in the frame so I was wondering what I should do , and should I use some kind of compound then installing the bb shell?
The shell is a plastic/ nylon affair and my frame is just carbon with no sleeves. I did read somewhere that loctite 609 or 641 can be used but a quick check on amazon came up with nothing for 609 and 2 hits for 641, one of which was 27,000 yen for a bottle. The other was almost 4000 yen.
What would you suggest I use when installing the BB? Should I get a new BB that will hopefully be a better fit?
Thanks in advance
Mark
I was wondering if anyone could shed some light on what is best to use when installing a shimano pressfit BB92-41. I've recently been having some problems with a creaky BB. Last week I took the crank out and regreased the contacts between the crank and the BB. I didn't realise it at the time, but when I pulled the crank out, the drive side BB shell came out with the crank. It's obviously not a tight fit at all which it probably why I'm having creaking issues.
After regreasing everything and putting the crank back in , it was silent for one ride. Halfway around my ride on Saturday it started making a noise again though . I once again pulled out the crank to regrease it (I used really crappy grease the first time round) and then realised that the drive side BB shell had come out too. I'm pretty sure the BB should DNA very tight fit in the frame so I was wondering what I should do , and should I use some kind of compound then installing the bb shell?
The shell is a plastic/ nylon affair and my frame is just carbon with no sleeves. I did read somewhere that loctite 609 or 641 can be used but a quick check on amazon came up with nothing for 609 and 2 hits for 641, one of which was 27,000 yen for a bottle. The other was almost 4000 yen.
What would you suggest I use when installing the BB? Should I get a new BB that will hopefully be a better fit?
Thanks in advance
Mark