I have a 2019 Synapse with a BB30a bottom bracket which is, no surprise, making noise. So I'm looking at the various replacement options that are out there. I'd prefer to keep the existing 30mm crankset, mostly for cost, which makes it look like the only option is the BB Infinite setup unless there are alternatives that I haven't seen. Anyone have experience with this/suggestions?
Pressfit BB replacement options
- Thread starter ebarker9
- Start date
I'm definitely not 100% sure. It's noticeable when riding out of the saddle so it's not that. Just ordered the crankset lockring tool to be able to check that. Part of it is just wanting to rule that out as a problem going forward if there's a better alternative.
I still have this if it would work. https://www.mtbnj.com/forum/threads/wheels-mfg-threaded-pf30-bottom-bracket-60.48683/#post-955400
Dingo
Well-Known Member
What rear hub do you have? I had a horrible intermittent creaking sound, usually out of the saddle under hard pedaling. Took me a while to track it down, replaced the press fit bottom bracket, shock bushings, inspected all pivot bearings, lock tited head set races. Spoke to Pivot and they were no help.
By chance I serviced the I9 rear hub and found the drive shell bearing destroyed. No problems with engagement or freewheeling, just doing routine maintenance.
It's the double row bearing in this pic.
By chance I serviced the I9 rear hub and found the drive shell bearing destroyed. No problems with engagement or freewheeling, just doing routine maintenance.
It's the double row bearing in this pic.
Attachments
It's BB30a, so unfortunately the pf30 adapter won't work. BB30 is the standard where bearings are pressed directly into the frame, whereas pf30 has bearings pressed into a cup which is then pressed into the frame. BB30a is the asymmetric variant of BB30, just to add a little confusion to the topic. The only option that I've come across other than various solutions using locitite or epoxy, which just don't seem like adequate long term approaches, is BB Inifinte:
www.bbinfinite.com
They are Fulcrum 600 DB hubs...not that much info available online that I've found, which tends to be the case with a lot of the parts that come on full bike builds. But I'm definitely still looking for other sources of noise.
BB30A (73MM), ROAD, for 30MM SPINDLE CRANKS
If you're dealing with the dreaded BB30 creaking, eliminate the problem with our 73MM BB30A bottom bracket. Enjoy cycling around using this 73MM BB today!
www.bbinfinite.com
They are Fulcrum 600 DB hubs...not that much info available online that I've found, which tends to be the case with a lot of the parts that come on full bike builds. But I'm definitely still looking for other sources of noise.
Tim
aka sptimmy43
I had the same issue with an i9 Torch hub. The bearings were toast after about 12 months.
Dingo
Well-Known Member
Mine was less than 12 months old, and this bearing is way inside, so no chance of dirt contamination.
Maybe swap the rear wheel from another bike just to eliminate.
Tim
aka sptimmy43
I replaced the bearings a couple months ago so I honestly don't remember exactly which one it was. It was completely toast though. The freehub body was actually developing a wobble from it. Yes, it was creaking. I actually went through the same process as you. I checked/cleaned/re-greased the cranks/spindle, BB, pivot bearings, etc. and then I decided to check the cassette to see if it was the source. I realized something was way off when removing the cassette.
The good news is that if you are handy and willing to buy the tools from i9 the bearing replacement is really easy. Even the tiny springs and pawls didn't pose any issue.
jackx
Well-Known Member
I would also check the rear axle - if it is quick-release. I've had some horrible creaks on my road bike - due to grit or being a tad bit too loose.
No, approximately 500 miles on this setup.
is it 12 speed (Eagle) its possible to have a worn out chain in less time than that depending on riding conditions/attention to lubrication
Probably should have been more explicit in the original post but it's a Cannondale Synapse road bike with 11 speed Ultegra Di2.
That would be the easy way out.
Fancy. Not opposed to fancy. Seems like for BB30a and keeping existing crankset Kogel's only option is just a straight bearing replacement, which doesn't seem like it really addresses any movement/misalignment issues.