I don't know. Can someone enlighten me. I am genuinly interested since it seems to be a good design and there's so much fanfare about it, but it seems to have so many issues that traditional BSC threaded BBs don't. Is it that BB30 owners are more vocal? Why can't Cannondale, who pioneered the BB30 standard, always get it right themselves.
I am not trying to start a flame war here but nothing I have seen has convinced me of any overall, all in superiority of BB30/PF30 over what came before.
They are expensive...but worth every penny spent.
Why do you come out slugging it with BB30 when you have 0 experience with it? At least the OP does.
Mongoosed: Loctite gap filler solves creaking (creaking = cracking?! ). Bearings require super tight tolerances for press fit. Too tight and it causes bearing failure. Too loose and you get wear between the mounting surface and the bearing.
I am totally confused about your "cracking". Are your cranks cracking?
Why are you complaining about BB30 when you do not even use a BB30 crank? BB30 cranks are not expensive. Using a real BB30 crank is the definitive solution. I do not like the idea of adapter cups. Do they put a cantilevered moment on the (former) BB30 bearing surface? A real BB30 crank puts a natural radial load on bearing surface.
I am also less than totally satisfied with BB30, but I have it working acceptably well with some loctite and higher side preload.
I think it is too finicky for a trypcal home bike mechanic.
Mongoosed wrote:I'm the owner of a cannondale caad9. Its BB has been making noise (cracking) since the very beginning. Two FSA gossamer and one Sram crankset after I have installed a Rotor BB 30 to 24 adapter and a Shimano 105 crankset. After four months it's been making noise and cracking again. Cannondale and my LBS don't wan't to known nothing about it, that after 4 cranksets it's not a warranty item (i think it is). Does anyone know which is the BB30 definitive solution? 2 years and 4 cranksets after I don't know what to do, maybe a wheels manufacturing cups?
You wouldn't happen to be related to bones now would you? Not sure about your particular circumstance as I don't know you, your bike, or your LBS personally. But let me tell you, that many of us have put thousands upon thousands of miles upon our BB30 bikes without any issue. So I am not sure if your crank is improperly setup, if you have just had crappy luck with the cranks you bought, if your mechanic is inept or you have a legit issue with your frame. If you don't trust your LBS, take it to a different shop for a 2nd opinion. Better yet, buy some tools yourself and do your own maintenance.
I have Cannondale Hollowgrams on all of my BB30 frames, 1 SI and 2 SISL cranks. Zero issues. They are the best crank setup I have ever owned. I first owned the SI and was blown away by it. Ended up selling my SRAM BB30 cranks to move completely to Hollowgram setups. Once you go Hollowgram, you won't go back.
I didn't have problem with my last crank which was FSA and seemed to fit tighter.
I think the solution is to apply loctite to the INNER bearing race instead of grease, but I have not decided on doing that yet.
I have used loctite 641 (removable strength) between shell and bearing outer race, which is removable strength and it pressed out fine, one side made a pop and the other didn't upon pressing out with the enduro tool, especially since my shell is also anodized. I don't think the loctite bond that strong on anodized surfaces, best bond is on steel/steel and even steel/alum interface the strength is weakened.
But for the crank spindle there is no way around but tap it out with a hammer. However I am thinking with enough freeze spray on the spindle it will separates easy.
This is why I will never buy a used BB30 frame...only because even just ONE instance of hastily using a hammer and punch to remove or install a BB30 bearing will permanently ruin the BB shell. Once a shell is compromised - bearings will go bad, creaking will be present, etc. No thanks!
Zachariah wrote:This is why I will never buy a used BB30 frame...only because even just ONE instance of hastily using a hammer and punch to remove or install a BB30 bearing will permanently ruin the BB shell. Once a shell is compromised - bearings will go bad, creaking will be present, etc. No thanks!
That is a bold statement to make, I agree if the bearings is skewed in the frame you could damage the shell.. but then almost no shops use a press to remove the bearings.
That said I am lucky to be able to build up my own (2 bikes), only after I replaced the frame that was mistreated by someone with a hammer and a pipe. I will never have a shop work on BB30 since I have all my tools now.
There have been numerous threads about how to fix this. Simply apply Loctite to hold the bearings in place and you will be fine. IIRC, it is the Loctite 609 compound - it's green.
And no, it has nothing to do with whether the proper press is used to install the bearings, and the proper removal tool is a metal plate and hammer. Sometimes, there is just a little play that is solved with Loctite.
I've done this on three different bikes now and each time, the Loctite has solved the problem.
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